[FFmpeg-trac] #7910(avcodec:new): Rate control issue with VAAPI: FFmpeg's h264_vaapi encoder with the iHD driver in VBR mode has exactly half the bitrate as the h264_qsv encoder.

FFmpeg trac at avcodec.org
Sun May 19 05:47:35 EEST 2019


#7910: Rate control issue with VAAPI: FFmpeg's h264_vaapi encoder with  the iHD
driver in VBR mode has exactly half the bitrate as the h264_qsv encoder.
------------------------------------+--------------------------------------
             Reporter:  Brainiarc7  |                     Type:  defect
               Status:  new         |                 Priority:  normal
            Component:  avcodec     |                  Version:  git-master
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+--------------------------------------
 '''Summary of the bug:'''

 Similar to this ticket: https://trac.ffmpeg.org/ticket/7629 but for the
 h264_vaapi encoder: With VAAPI, the bitrate is exactly halved using the
 same bitrate settings when tested with the iHD driver compared to the
 h264_qsv encoder in VBR mode.

 '''How to reproduce:'''

 Here's a session with the h264_qsv encoder:

 {{{
 #!/bin/bash


 LIBVA_DRIVER_NAME=iHD FFREPORT="level=32:file=qsv.log" ffmpeg -y -stats
 -benchmark -vstats_file $(pwd)/qsv.csv \
 -vsync 1 -fflags +genpts \
 -init_hw_device qsv=hw -filter_hw_device hw -hwaccel qsv  \
 -i $(pwd)/rv.mkv -vf 'format=qsv|nv12,hwupload=extra_hw_frames=64'  \
 -c:v h264_qsv -profile:v main -look_ahead:v 1 -look_ahead_depth:v 32
 -refs:v 16 -b_strategy:v 1 -bf:v 3 -trellis:v 1 -slices:v $(nproc)
 -mbbrc:v 1 \
 -b:v 7.5M -minrate:v 7.5M -maxrate:v 15M -bufsize:v 7.5M -r:v 60 -an -f
 mp4 -y $(pwd)/qsv-ihd.mp4

 }}}

 And here is the log:

 {{{
 ffmpeg started on 2019-05-19 at 05:13:31
 Report written to "qsv.log"
 Command line:
 ffmpeg -y -stats -benchmark -vstats_file
 /home/brainiarc7/Desktop/src/benchmarks/final/qsv.csv -vsync 1 -fflags
 +genpts -init_hw_device "qsv=hw" -filter_hw_device hw -hwaccel qsv -i
 /home/brainiarc7/Desktop/src/benchmarks/final/rv.mkv -vf
 "format=qsv|nv12,hwupload=extra_hw_frames=64" -c:v h264_qsv -profile:v
 main -look_ahead:v 1 -look_ahead_depth:v 32 -refs:v 16 -b_strategy:v 1
 -bf:v 3 -trellis:v 1 -slices:v 12 -mbbrc:v 1 -b:v 7.5M -minrate:v 7.5M
 -maxrate:v 15M -bufsize:v 7.5M -r:v 60 -an -f mp4 -y
 /home/brainiarc7/Desktop/src/benchmarks/final/qsv-ihd.mp4
 ffmpeg version N-93885-gc61d16cf3b Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04)
   configuration: --pkg-config-flags=--static --prefix=/home/brainiarc7/bin
 --bindir=/home/brainiarc7/bin --extra-
 cflags=-I/home/brainiarc7/bin/include --extra-
 ldflags=-L/home/brainiarc7/bin/lib --enable-cuda-nvcc --enable-cuvid
 --enable-libnpp --extra-cflags=-I/usr/local/cuda/include/ --extra-
 ldflags=-L/usr/local/cuda/lib64/ --enable-nvenc --extra-
 cflags=-I/opt/intel/mediasdk/include --extra-
 ldflags=-L/opt/intel/mediasdk/lib --extra-
 ldflags=-L/opt/intel/mediasdk/plugins --enable-libmfx --enable-libass
 --enable-vaapi --disable-debug --enable-libvorbis --enable-libvpx
 --enable-libdrm --enable-opencl --enable-gpl --cpu=native --enable-opengl
 --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-openssl
 --extra-libs='-lpthread -lm -lz' --enable-nonfree
   libavutil      56. 28.100 / 56. 28.100
   libavcodec     58. 52.101 / 58. 52.101
   libavformat    58. 27.103 / 58. 27.103
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 53.101 /  7. 53.101
   libswscale      5.  4.101 /  5.  4.101
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Input #0, matroska,webm, from
 '/home/brainiarc7/Desktop/src/benchmarks/final/rv.mkv':
   Metadata:
     encoder         : libebml v1.3.7 + libmatroska v1.5.0
     creation_time   : 2019-05-09T10:09:00.000000Z
   Duration: 00:05:16.95, start: 0.000000, bitrate: 7889 kb/s
     Stream #0:0: Video: h264 (High), yuv420p(tv, bt470bg/bt709/bt709,
 progressive), 2560x1080 [SAR 1:1 DAR 64:27], 60 fps, 60 tbr, 1k tbn, 120
 tbc (default)
     Metadata:
       BPS-eng         : 7886082
       DURATION-eng    : 00:05:16.950000000
       NUMBER_OF_FRAMES-eng: 19015
       NUMBER_OF_BYTES-eng: 312436712
       _STATISTICS_WRITING_APP-eng: mkvmerge v33.1.0 ('Primrose') 64-bit
       _STATISTICS_WRITING_DATE_UTC-eng: 2019-05-09 10:09:00
       _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_qsv))
 Press [q] to stop, [?] for help
 Output #0, mp4, to '/home/brainiarc7/Desktop/src/benchmarks/final/qsv-
 ihd.mp4':
   Metadata:
     encoder         : Lavf58.27.103
     Stream #0:0: Video: h264 (h264_qsv) (avc1 / 0x31637661), qsv,
 2560x1080 [SAR 1:1 DAR 64:27], q=-1--1, 7500 kb/s, 60 fps, 15360 tbn, 60
 tbc (default)
     Metadata:
       BPS-eng         : 7886082
       DURATION-eng    : 00:05:16.950000000
       NUMBER_OF_FRAMES-eng: 19015
       NUMBER_OF_BYTES-eng: 312436712
       _STATISTICS_WRITING_APP-eng: mkvmerge v33.1.0 ('Primrose') 64-bit
       _STATISTICS_WRITING_DATE_UTC-eng: 2019-05-09 10:09:00
       _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
       encoder         : Lavc58.52.101 h264_qsv
     Side data:
       cpb: bitrate max/min/avg: 15000000/7500000/7500000 buffer size:
 7500000 vbv_delay: -1
 frame=   85 fps=0.0 q=1.0 size=     512kB time=00:00:00.71
 bitrate=5852.5kbits/s speed=1.43x
 frame=  180 fps=180 q=1.0 size=     768kB time=00:00:02.30
 bitrate=2735.5kbits/s speed= 2.3x
 frame=  276 fps=184 q=1.0 size=    1024kB time=00:00:03.90
 bitrate=2151.0kbits/s speed= 2.6x
 frame=  373 fps=186 q=1.0 size=    1536kB time=00:00:05.51
 bitrate=2280.9kbits/s speed=2.75x
 frame=  469 fps=187 q=18.0 size=    2560kB time=00:00:07.11
 bitrate=2946.8kbits/s speed=2.84x
 frame=  564 fps=187 q=1.0 size=    4608kB time=00:00:08.70
 bitrate=4338.9kbits/s speed=2.89x
 frame=  661 fps=188 q=1.0 size=    5376kB time=00:00:10.31
 bitrate=4268.8kbits/s speed=2.94x
 frame=  757 fps=189 q=1.0 size=    6144kB time=00:00:11.91
 bitrate=4223.6kbits/s speed=2.97x
 frame=  852 fps=189 q=1.0 size=    6912kB time=00:00:13.50
 bitrate=4194.3kbits/s speed=2.99x
 frame=  946 fps=188 q=1.0 size=    7680kB time=00:00:15.06
 bitrate=4175.8kbits/s speed=   3x
 frame= 1041 fps=188 q=1.0 size=    8448kB time=00:00:16.65
 bitrate=4156.5kbits/s speed=3.01x
 frame= 1136 fps=188 q=1.0 size=    9728kB time=00:00:18.23
 bitrate=4370.7kbits/s speed=3.02x
 frame= 1228 fps=188 q=1.0 size=   10752kB time=00:00:19.76
 bitrate=4456.0kbits/s speed=3.03x
 frame= 1320 fps=188 q=1.0 size=   12032kB time=00:00:21.30
 bitrate=4627.5kbits/s speed=3.03x
 frame= 1414 fps=188 q=6.0 size=   13568kB time=00:00:22.86
 bitrate=4860.7kbits/s speed=3.03x
 frame= 1507 fps=187 q=1.0 size=   16640kB time=00:00:24.41
 bitrate=5582.9kbits/s speed=3.04x
 frame= 1603 fps=188 q=2.0 size=   20480kB time=00:00:26.01
 bitrate=6448.6kbits/s speed=3.04x
 frame= 1698 fps=188 q=14.0 size=   22784kB time=00:00:27.60
 bitrate=6762.6kbits/s speed=3.05x
 frame= 1794 fps=188 q=7.0 size=   26112kB time=00:00:29.20
 bitrate=7325.7kbits/s speed=3.06x
 frame= 1888 fps=188 q=1.0 size=   27136kB time=00:00:30.76
 bitrate=7225.3kbits/s speed=3.06x
 frame= 1978 fps=187 q=1.0 size=   28160kB time=00:00:32.26
 bitrate=7149.4kbits/s speed=3.06x
 frame= 2069 fps=187 q=1.0 size=   29952kB time=00:00:33.78
 bitrate=7263.0kbits/s speed=3.05x
 frame= 2164 fps=187 q=1.0 size=   30976kB time=00:00:35.36
 bitrate=7175.0kbits/s speed=3.06x
 frame= 2258 fps=187 q=8.0 size=   32768kB time=00:00:36.93
 bitrate=7268.1kbits/s speed=3.06x
 frame= 2355 fps=187 q=14.0 size=   34816kB time=00:00:38.55
 bitrate=7398.5kbits/s speed=3.07x
 frame= 2451 fps=188 q=16.0 size=   36352kB time=00:00:40.15
 bitrate=7417.1kbits/s speed=3.07x
 frame= 2548 fps=188 q=23.0 size=   38144kB time=00:00:41.76
 bitrate=7481.5kbits/s speed=3.08x
 frame= 2644 fps=188 q=6.0 size=   39424kB time=00:00:43.36
 bitrate=7447.2kbits/s speed=3.08x
 frame= 2740 fps=188 q=29.0 size=   40704kB time=00:00:44.96
 bitrate=7415.4kbits/s speed=3.09x
 frame= 2837 fps=188 q=22.0 size=   42496kB time=00:00:46.58
 bitrate=7473.2kbits/s speed=3.09x
 frame= 2935 fps=188 q=21.0 size=   43776kB time=00:00:48.21
 bitrate=7437.5kbits/s speed=3.09x
 frame= 3032 fps=189 q=28.0 size=   45312kB time=00:00:49.83
 bitrate=7448.7kbits/s speed= 3.1x
 frame= 3127 fps=189 q=20.0 size=   47104kB time=00:00:51.41
 bitrate=7504.9kbits/s speed= 3.1x
 frame= 3223 fps=189 q=25.0 size=   48128kB time=00:00:53.01
 bitrate=7436.6kbits/s speed= 3.1x
 frame= 3319 fps=189 q=22.0 size=   49664kB time=00:00:54.61
 bitrate=7449.1kbits/s speed= 3.1x
 frame= 3412 fps=189 q=22.0 size=   51200kB time=00:00:56.16
 bitrate=7467.6kbits/s speed= 3.1x
 frame= 3506 fps=189 q=29.0 size=   52736kB time=00:00:57.73
 bitrate=7482.9kbits/s speed= 3.1x
 frame= 3601 fps=189 q=10.0 size=   54016kB time=00:00:59.31
 bitrate=7459.9kbits/s speed=3.11x
 frame= 3694 fps=188 q=7.0 size=   55296kB time=00:01:00.86
 bitrate=7442.2kbits/s speed= 3.1x
 frame= 3786 fps=188 q=17.0 size=   56576kB time=00:01:02.40
 bitrate=7427.4kbits/s speed= 3.1x
 frame= 3879 fps=188 q=10.0 size=   58368kB time=00:01:03.95
 bitrate=7476.9kbits/s speed= 3.1x
 frame= 3970 fps=188 q=14.0 size=   59648kB time=00:01:05.46
 bitrate=7463.9kbits/s speed= 3.1x
 frame= 4060 fps=188 q=14.0 size=   61184kB time=00:01:06.96
 bitrate=7484.6kbits/s speed= 3.1x
 frame= 4156 fps=188 q=8.0 size=   62720kB time=00:01:08.56
 bitrate=7493.5kbits/s speed= 3.1x
 frame= 4251 fps=188 q=6.0 size=   63744kB time=00:01:10.15
 bitrate=7443.9kbits/s speed= 3.1x
 frame= 4348 fps=188 q=10.0 size=   65280kB time=00:01:11.76
 bitrate=7451.6kbits/s speed= 3.1x
 frame= 4442 fps=188 q=1.0 size=   66816kB time=00:01:13.33
 bitrate=7464.0kbits/s speed= 3.1x
 frame= 4538 fps=188 q=15.0 size=   67584kB time=00:01:14.93
 bitrate=7388.5kbits/s speed=3.11x
 frame= 4632 fps=188 q=1.0 size=   68864kB time=00:01:16.50
 bitrate=7374.3kbits/s speed=3.11x
 frame= 4729 fps=188 q=1.0 size=   69120kB time=00:01:18.11
 bitrate=7248.5kbits/s speed=3.11x
 frame= 4826 fps=188 q=1.0 size=   69632kB time=00:01:19.73
 bitrate=7154.2kbits/s speed=3.11x
 frame= 4922 fps=188 q=1.0 size=   70400kB time=00:01:21.33
 bitrate=7090.8kbits/s speed=3.11x
 frame= 5014 fps=188 q=1.0 size=   70912kB time=00:01:22.86
 bitrate=7010.2kbits/s speed=3.11x
 frame= 5111 fps=188 q=1.0 size=   71424kB time=00:01:24.48
 bitrate=6925.7kbits/s speed=3.11x
 frame= 5205 fps=188 q=1.0 size=   76544kB time=00:01:26.05
 bitrate=7287.0kbits/s speed=3.11x
 frame= 5300 fps=188 q=13.0 size=   78848kB time=00:01:27.63
 bitrate=7370.7kbits/s speed=3.11x
 frame= 5393 fps=188 q=1.0 size=   80640kB time=00:01:29.18
 bitrate=7407.2kbits/s speed=3.11x
 frame= 5488 fps=188 q=14.0 size=   81152kB time=00:01:30.76
 bitrate=7324.2kbits/s speed=3.11x
 frame= 5583 fps=188 q=18.0 size=   83712kB time=00:01:32.35
 bitrate=7425.8kbits/s speed=3.11x
 frame= 5679 fps=188 q=1.0 size=   85504kB time=00:01:33.95
 bitrate=7455.5kbits/s speed=3.12x
 frame= 5774 fps=188 q=14.0 size=   86528kB time=00:01:35.53
 bitrate=7419.8kbits/s speed=3.12x
 frame= 5869 fps=188 q=1.0 size=   87808kB time=00:01:37.11
 bitrate=7406.8kbits/s speed=3.12x
 frame= 5965 fps=188 q=1.0 size=   89088kB time=00:01:38.71
 bitrate=7393.0kbits/s speed=3.12x
 frame= 6061 fps=188 q=10.0 size=   91392kB time=00:01:40.31
 bitrate=7463.2kbits/s speed=3.12x
 frame= 6157 fps=188 q=19.0 size=   92928kB time=00:01:41.91
 bitrate=7469.5kbits/s speed=3.12x
 frame= 6255 fps=189 q=19.0 size=   94720kB time=00:01:43.55
 bitrate=7493.4kbits/s speed=3.12x
 frame= 6353 fps=189 q=21.0 size=   96256kB time=00:01:45.18
 bitrate=7496.7kbits/s speed=3.12x
 frame= 6451 fps=189 q=14.0 size=   97792kB time=00:01:46.81
 bitrate=7499.9kbits/s speed=3.13x
 frame= 6547 fps=189 q=17.0 size=   99072kB time=00:01:48.41
 bitrate=7485.9kbits/s speed=3.13x
 frame= 6645 fps=189 q=17.0 size=  100608kB time=00:01:50.05
 bitrate=7489.1kbits/s speed=3.13x
 frame= 6743 fps=189 q=18.0 size=  101888kB time=00:01:51.68
 bitrate=7473.5kbits/s speed=3.13x
 frame= 6840 fps=189 q=25.0 size=  103424kB time=00:01:53.30
 bitrate=7477.9kbits/s speed=3.13x
 frame= 6935 fps=189 q=14.0 size=  104960kB time=00:01:54.88
 bitrate=7484.4kbits/s speed=3.13x
 frame= 7029 fps=189 q=25.0 size=  106496kB time=00:01:56.45
 bitrate=7491.8kbits/s speed=3.13x
 frame= 7124 fps=189 q=17.0 size=  108032kB time=00:01:58.03
 bitrate=7497.9kbits/s speed=3.13x
 frame= 7214 fps=189 q=16.0 size=  109312kB time=00:01:59.53
 bitrate=7491.5kbits/s speed=3.13x
 frame= 7301 fps=189 q=13.0 size=  110592kB time=00:02:00.98
 bitrate=7488.4kbits/s speed=3.13x
 frame= 7395 fps=189 q=16.0 size=  111872kB time=00:02:02.55
 bitrate=7478.2kbits/s speed=3.13x
 frame= 7490 fps=189 q=29.0 size=  112896kB time=00:02:04.13
 bitrate=7450.4kbits/s speed=3.13x
 frame= 7587 fps=189 q=32.0 size=  114176kB time=00:02:05.75
 bitrate=7438.0kbits/s speed=3.13x
 frame= 7683 fps=189 q=28.0 size=  115456kB time=00:02:07.35
 bitrate=7426.9kbits/s speed=3.13x
 frame= 7781 fps=189 q=1.0 size=  116992kB time=00:02:08.98
 bitrate=7430.4kbits/s speed=3.13x
 frame= 7871 fps=189 q=16.0 size=  117760kB time=00:02:10.48
 bitrate=7393.2kbits/s speed=3.13x
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 bitrate=7390.5kbits/s speed=3.13x
 frame= 8046 fps=188 q=17.0 size=  120832kB time=00:02:13.40
 bitrate=7420.2kbits/s speed=3.12x
 frame= 8140 fps=188 q=1.0 size=  121856kB time=00:02:14.96
 bitrate=7396.2kbits/s speed=3.12x
 frame= 8235 fps=188 q=1.0 size=  122112kB time=00:02:16.55
 bitrate=7325.8kbits/s speed=3.12x
 frame= 8327 fps=188 q=11.0 size=  125952kB time=00:02:18.08
 bitrate=7472.3kbits/s speed=3.12x
 frame= 8421 fps=188 q=27.0 size=  127488kB time=00:02:19.65
 bitrate=7478.6kbits/s speed=3.12x
 frame= 8518 fps=188 q=34.0 size=  129024kB time=00:02:21.26
 bitrate=7482.1kbits/s speed=3.12x
 frame= 8614 fps=188 q=19.0 size=  130560kB time=00:02:22.86
 bitrate=7486.3kbits/s speed=3.12x
 frame= 8706 fps=188 q=9.0 size=  132352kB time=00:02:24.40
 bitrate=7508.5kbits/s speed=3.12x
 frame= 8792 fps=188 q=19.0 size=  133376kB time=00:02:25.83
 bitrate=7492.2kbits/s speed=3.12x
 frame= 8890 fps=188 q=26.0 size=  134400kB time=00:02:27.46
 bitrate=7466.1kbits/s speed=3.12x
 frame= 8986 fps=188 q=21.0 size=  135680kB time=00:02:29.06
 bitrate=7456.3kbits/s speed=3.12x
 frame= 9079 fps=188 q=11.0 size=  137984kB time=00:02:30.61
 bitrate=7504.9kbits/s speed=3.12x
 frame= 9171 fps=188 q=30.0 size=  139008kB time=00:02:32.15
 bitrate=7484.4kbits/s speed=3.12x
 frame= 9265 fps=188 q=13.0 size=  140544kB time=00:02:33.71
 bitrate=7490.0kbits/s speed=3.12x
 frame= 9359 fps=188 q=5.0 size=  141824kB time=00:02:35.28
 bitrate=7481.9kbits/s speed=3.12x
 frame= 9456 fps=188 q=25.0 size=  142592kB time=00:02:36.90
 bitrate=7445.0kbits/s speed=3.12x
 frame= 9552 fps=188 q=1.0 size=  143872kB time=00:02:38.50
 bitrate=7436.0kbits/s speed=3.12x
 frame= 9648 fps=188 q=26.0 size=  144640kB time=00:02:40.10
 bitrate=7400.9kbits/s speed=3.12x
 frame= 9744 fps=188 q=25.0 size=  145920kB time=00:02:41.70
 bitrate=7392.6kbits/s speed=3.12x
 frame= 9841 fps=188 q=11.0 size=  147968kB time=00:02:43.31
 bitrate=7422.1kbits/s speed=3.13x
 frame= 9933 fps=188 q=1.0 size=  149248kB time=00:02:44.85
 bitrate=7416.7kbits/s speed=3.12x
 frame=10030 fps=188 q=1.0 size=  149504kB time=00:02:46.46
 bitrate=7357.2kbits/s speed=3.13x
 frame=10125 fps=188 q=1.0 size=  149760kB time=00:02:48.05
 bitrate=7300.4kbits/s speed=3.13x
 frame=10222 fps=188 q=1.0 size=  150016kB time=00:02:49.66
 bitrate=7243.2kbits/s speed=3.13x
 frame=10317 fps=188 q=1.0 size=  150784kB time=00:02:51.25
 bitrate=7213.0kbits/s speed=3.13x
 frame=10411 fps=188 q=1.0 size=  151040kB time=00:02:52.81
 bitrate=7159.7kbits/s speed=3.13x
 frame=10507 fps=188 q=1.0 size=  151296kB time=00:02:54.41
 bitrate=7106.1kbits/s speed=3.13x
 frame=10603 fps=188 q=1.0 size=  152064kB time=00:02:56.01
 bitrate=7077.2kbits/s speed=3.13x
 frame=10698 fps=188 q=1.0 size=  152832kB time=00:02:57.60
 bitrate=7049.5kbits/s speed=3.13x
 frame=10794 fps=188 q=1.0 size=  154112kB time=00:02:59.20
 bitrate=7045.1kbits/s speed=3.13x
 frame=10888 fps=188 q=1.0 size=  155648kB time=00:03:00.76
 bitrate=7053.7kbits/s speed=3.13x
 frame=10983 fps=188 q=1.0 size=  157696kB time=00:03:02.35
 bitrate=7084.4kbits/s speed=3.13x
 frame=11075 fps=188 q=1.0 size=  160000kB time=00:03:03.88
 bitrate=7128.0kbits/s speed=3.13x
 frame=11170 fps=188 q=1.0 size=  161280kB time=00:03:05.46
 bitrate=7123.7kbits/s speed=3.13x
 frame=11266 fps=188 q=1.0 size=  161792kB time=00:03:07.06
 bitrate=7085.2kbits/s speed=3.13x
 frame=11361 fps=188 q=1.0 size=  163584kB time=00:03:08.65
 bitrate=7103.5kbits/s speed=3.13x
 frame=11455 fps=188 q=1.0 size=  164096kB time=00:03:10.21
 bitrate=7067.1kbits/s speed=3.13x
 frame=11551 fps=188 q=1.0 size=  164864kB time=00:03:11.81
 bitrate=7040.9kbits/s speed=3.13x
 frame=11646 fps=188 q=1.0 size=  165376kB time=00:03:13.40
 bitrate=7005.0kbits/s speed=3.13x
 frame=11740 fps=188 q=1.0 size=  165888kB time=00:03:14.96
 bitrate=6970.2kbits/s speed=3.13x
 frame=11835 fps=188 q=1.0 size=  166656kB time=00:03:16.55
 bitrate=6946.0kbits/s speed=3.13x
 frame=11931 fps=188 q=1.0 size=  167680kB time=00:03:18.15
 bitrate=6932.3kbits/s speed=3.13x
 frame=12026 fps=188 q=1.0 size=  168448kB time=00:03:19.73
 bitrate=6908.8kbits/s speed=3.13x
 frame=12120 fps=188 q=1.0 size=  169216kB time=00:03:21.30
 bitrate=6886.3kbits/s speed=3.13x
 frame=12215 fps=188 q=1.0 size=  169728kB time=00:03:22.88
 bitrate=6853.3kbits/s speed=3.13x
 frame=12309 fps=188 q=1.0 size=  170752kB time=00:03:24.45
 bitrate=6841.8kbits/s speed=3.13x
 frame=12403 fps=188 q=1.0 size=  173056kB time=00:03:26.01
 bitrate=6881.4kbits/s speed=3.13x
 frame=12497 fps=188 q=1.0 size=  175616kB time=00:03:27.58
 bitrate=6930.5kbits/s speed=3.13x
 frame=12592 fps=188 q=1.0 size=  176640kB time=00:03:29.16
 bitrate=6918.1kbits/s speed=3.13x
 frame=12687 fps=188 q=1.0 size=  177408kB time=00:03:30.75
 bitrate=6896.0kbits/s speed=3.13x
 frame=12781 fps=188 q=1.0 size=  178176kB time=00:03:32.31
 bitrate=6874.7kbits/s speed=3.13x
 frame=12877 fps=188 q=1.0 size=  179200kB time=00:03:33.91
 bitrate=6862.5kbits/s speed=3.13x
 frame=12971 fps=188 q=1.0 size=  179968kB time=00:03:35.48
 bitrate=6841.8kbits/s speed=3.13x
 frame=13066 fps=188 q=1.0 size=  180992kB time=00:03:37.06
 bitrate=6830.6kbits/s speed=3.13x
 frame=13158 fps=188 q=1.0 size=  182784kB time=00:03:38.60
 bitrate=6849.8kbits/s speed=3.13x
 frame=13253 fps=188 q=1.0 size=  183552kB time=00:03:40.18
 bitrate=6829.1kbits/s speed=3.13x
 frame=13348 fps=188 q=1.0 size=  184832kB time=00:03:41.76
 bitrate=6827.6kbits/s speed=3.13x
 frame=13444 fps=188 q=1.0 size=  185600kB time=00:03:43.36
 bitrate=6806.9kbits/s speed=3.13x
 frame=13540 fps=188 q=1.0 size=  186624kB time=00:03:44.96
 bitrate=6795.8kbits/s speed=3.13x
 frame=13635 fps=188 q=1.0 size=  187392kB time=00:03:46.55
 bitrate=6776.1kbits/s speed=3.13x
 frame=13730 fps=188 q=1.0 size=  188160kB time=00:03:48.13
 bitrate=6756.6kbits/s speed=3.13x
 frame=13825 fps=188 q=1.0 size=  189184kB time=00:03:49.71
 bitrate=6746.6kbits/s speed=3.13x
 frame=13919 fps=188 q=1.0 size=  189696kB time=00:03:51.28
 bitrate=6719.0kbits/s speed=3.13x
 frame=14014 fps=188 q=1.0 size=  190464kB time=00:03:52.86
 bitrate=6700.3kbits/s speed=3.13x
 frame=14109 fps=188 q=1.0 size=  191488kB time=00:03:54.45
 bitrate=6690.8kbits/s speed=3.13x
 frame=14205 fps=188 q=1.0 size=  193280kB time=00:03:56.05
 bitrate=6707.7kbits/s speed=3.13x
 frame=14301 fps=188 q=1.0 size=  194048kB time=00:03:57.65
 bitrate=6689.0kbits/s speed=3.13x
 frame=14396 fps=188 q=1.0 size=  194560kB time=00:03:59.23
 bitrate=6662.3kbits/s speed=3.13x
 frame=14489 fps=188 q=1.0 size=  195840kB time=00:04:00.78
 bitrate=6662.9kbits/s speed=3.13x
 frame=14584 fps=188 q=1.0 size=  196608kB time=00:04:02.36
 bitrate=6645.4kbits/s speed=3.13x
 frame=14679 fps=188 q=1.0 size=  197120kB time=00:04:03.95
 bitrate=6619.4kbits/s speed=3.13x
 frame=14773 fps=188 q=1.0 size=  197632kB time=00:04:05.51
 bitrate=6594.3kbits/s speed=3.13x
 frame=14867 fps=188 q=1.0 size=  198400kB time=00:04:07.08
 bitrate=6577.9kbits/s speed=3.13x
 frame=14963 fps=188 q=1.0 size=  198912kB time=00:04:08.68
 bitrate=6552.5kbits/s speed=3.13x
 frame=15059 fps=189 q=1.0 size=  199680kB time=00:04:10.28
 bitrate=6535.7kbits/s speed=3.13x
 frame=15155 fps=189 q=1.0 size=  200192kB time=00:04:11.88
 bitrate=6510.8kbits/s speed=3.13x
 frame=15249 fps=189 q=1.0 size=  200448kB time=00:04:13.45
 bitrate=6478.9kbits/s speed=3.13x
 frame=15345 fps=189 q=1.0 size=  201216kB time=00:04:15.05
 bitrate=6462.9kbits/s speed=3.13x
 frame=15442 fps=189 q=1.0 size=  201728kB time=00:04:16.66
 bitrate=6438.5kbits/s speed=3.13x
 frame=15536 fps=189 q=1.0 size=  203008kB time=00:04:18.23
 bitrate=6440.1kbits/s speed=3.13x
 frame=15630 fps=189 q=1.0 size=  203776kB time=00:04:19.80
 bitrate=6425.5kbits/s speed=3.13x
 frame=15724 fps=189 q=1.0 size=  204288kB time=00:04:21.36
 bitrate=6403.0kbits/s speed=3.13x
 frame=15821 fps=189 q=1.0 size=  206080kB time=00:04:22.98
 bitrate=6419.4kbits/s speed=3.13x
 frame=15917 fps=189 q=1.0 size=  206592kB time=00:04:24.58
 bitrate=6396.5kbits/s speed=3.13x
 frame=16012 fps=189 q=1.0 size=  208128kB time=00:04:26.16
 bitrate=6405.7kbits/s speed=3.13x
 frame=16106 fps=189 q=1.0 size=  211712kB time=00:04:27.73
 bitrate=6477.9kbits/s speed=3.13x
 frame=16196 fps=189 q=1.0 size=  218880kB time=00:04:29.23
 bitrate=6659.9kbits/s speed=3.13x
 frame=16281 fps=188 q=1.0 size=  226816kB time=00:04:30.65
 bitrate=6865.2kbits/s speed=3.13x
 frame=16376 fps=188 q=1.0 size=  231424kB time=00:04:32.23
 bitrate=6964.0kbits/s speed=3.13x
 frame=16469 fps=188 q=1.0 size=  237056kB time=00:04:33.78
 bitrate=7093.1kbits/s speed=3.13x
 frame=16556 fps=188 q=1.0 size=  244480kB time=00:04:35.23
 bitrate=7276.7kbits/s speed=3.13x
 frame=16648 fps=188 q=1.0 size=  250880kB time=00:04:36.76
 bitrate=7425.8kbits/s speed=3.13x
 frame=16743 fps=188 q=16.0 size=  254464kB time=00:04:38.35
 bitrate=7489.0kbits/s speed=3.13x
 frame=16840 fps=188 q=13.0 size=  256256kB time=00:04:39.96
 bitrate=7498.2kbits/s speed=3.13x
 frame=16937 fps=188 q=24.0 size=  257536kB time=00:04:41.58
 bitrate=7492.4kbits/s speed=3.13x
 frame=17032 fps=188 q=24.0 size=  259072kB time=00:04:43.16
 bitrate=7494.9kbits/s speed=3.13x
 frame=17127 fps=188 q=15.0 size=  260608kB time=00:04:44.75
 bitrate=7497.5kbits/s speed=3.13x
 frame=17219 fps=188 q=16.0 size=  262144kB time=00:04:46.28
 bitrate=7501.3kbits/s speed=3.13x
 frame=17314 fps=188 q=12.0 size=  263936kB time=00:04:47.86
 bitrate=7511.0kbits/s speed=3.13x
 frame=17408 fps=188 q=9.0 size=  264704kB time=00:04:49.43
 bitrate=7492.1kbits/s speed=3.13x
 frame=17504 fps=188 q=1.0 size=  265728kB time=00:04:51.03
 bitrate=7479.7kbits/s speed=3.13x
 frame=17601 fps=188 q=1.0 size=  266752kB time=00:04:52.65
 bitrate=7467.1kbits/s speed=3.13x
 frame=17698 fps=188 q=17.0 size=  267520kB time=00:04:54.26
 bitrate=7447.4kbits/s speed=3.13x
 frame=17794 fps=188 q=17.0 size=  269056kB time=00:04:55.86
 bitrate=7449.7kbits/s speed=3.13x
 frame=17889 fps=188 q=26.0 size=  270336kB time=00:04:57.45
 bitrate=7445.3kbits/s speed=3.13x
 frame=17986 fps=188 q=1.0 size=  271872kB time=00:04:59.06
 bitrate=7447.1kbits/s speed=3.13x
 frame=18082 fps=188 q=1.0 size=  273152kB time=00:05:00.66
 bitrate=7442.3kbits/s speed=3.13x
 frame=18178 fps=188 q=1.0 size=  273408kB time=00:05:02.26
 bitrate=7409.9kbits/s speed=3.13x
 frame=18273 fps=188 q=1.0 size=  274176kB time=00:05:03.85
 bitrate=7392.0kbits/s speed=3.13x
 frame=18370 fps=188 q=1.0 size=  274432kB time=00:05:05.46
 bitrate=7359.7kbits/s speed=3.13x
 frame=18465 fps=188 q=1.0 size=  274688kB time=00:05:07.05
 bitrate=7328.6kbits/s speed=3.13x
 frame=18557 fps=188 q=1.0 size=  277504kB time=00:05:08.58
 bitrate=7366.9kbits/s speed=3.13x
 frame=18650 fps=188 q=1.0 size=  281088kB time=00:05:10.13
 bitrate=7424.8kbits/s speed=3.13x
 frame=18746 fps=188 q=1.0 size=  283136kB time=00:05:11.73
 bitrate=7440.5kbits/s speed=3.13x
 frame=18843 fps=188 q=4.0 size=  286720kB time=00:05:13.35
 bitrate=7495.8kbits/s speed=3.13x
 frame=18940 fps=188 q=8.0 size=  288256kB time=00:05:14.96
 bitrate=7497.3kbits/s speed=3.13x
 [matroska,webm @ 0x56472a3a0d80] Element at 0x12a19b6f ending at
 0x12a1a20e exceeds containing master element ending at 0x12a19b69
 frame=19017 fps=188 q=6.0 Lsize=  290758kB time=00:05:16.90
 bitrate=7516.2kbits/s dup=2 drop=0 speed=3.14x
 video:290308kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.155236%
 bench: utime=229.114s stime=6.348s rtime=101.037s
 bench: maxrss=286528kB
 }}}

 Note how good the bitrate adherence is. Now, on to the h264_vaapi encoder:

 {{{
 #!/bin/bash
 #LIBVA_DRIVER_NAME=iHD in this session.

 LIBVA_DRIVER_NAME=iHD FFREPORT="level=32:file=vaapi-ihd.log" ffmpeg -y
 -stats -qphist -benchmark -vstats_file $(pwd)/vaapi-ihd.csv \
 -vsync 1 -fflags +genpts \
 -init_hw_device vaapi=va:/dev/dri/renderD128 -filter_hw_device va -hwaccel
 vaapi \
 -i $(pwd)/rv.mkv -vf 'format=vaapi|nv12,hwupload'  \
 -c:v h264_vaapi -rc_mode:v VBR -qmin:v 1 -qmax:v 19 -coder:v cabac
 -profile:v main -b_depth:v 3 -refs:v 16 -b_strategy:v 1 -bf:v 3 -slices:v
 $(nproc) \
 -b:v 7.5M -minrate:v 7.5M -maxrate:v 15M -bufsize:v 7.5M  -r:v 60 -an -f
 mp4 -y $(pwd)/vaapi-ihd.mp4
 }}}

 And the atrocity that follows:

 {{{
 ffmpeg started on 2019-05-19 at 05:20:27
 Report written to "vaapi-ihd.log"
 Command line:
 ffmpeg -y -stats -qphist -benchmark -vstats_file
 /home/brainiarc7/Desktop/src/benchmarks/final/vaapi-ihd.csv -vsync 1
 -fflags +genpts -init_hw_device "vaapi=va:/dev/dri/renderD128"
 -filter_hw_device va -hwaccel vaapi -i
 /home/brainiarc7/Desktop/src/benchmarks/final/rv.mkv -vf
 "format=vaapi|nv12,hwupload" -c:v h264_vaapi -rc_mode:v VBR -qmin:v 1
 -qmax:v 19 -coder:v cabac -profile:v main -b_depth:v 3 -refs:v 16
 -b_strategy:v 1 -bf:v 3 -slices:v 12 -b:v 7.5M -minrate:v 7.5M -maxrate:v
 15M -bufsize:v 7.5M -r:v 60 -an -f mp4 -y
 /home/brainiarc7/Desktop/src/benchmarks/final/vaapi-ihd.mp4
 ffmpeg version N-93885-gc61d16cf3b Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04)
   configuration: --pkg-config-flags=--static --prefix=/home/brainiarc7/bin
 --bindir=/home/brainiarc7/bin --extra-
 cflags=-I/home/brainiarc7/bin/include --extra-
 ldflags=-L/home/brainiarc7/bin/lib --enable-cuda-nvcc --enable-cuvid
 --enable-libnpp --extra-cflags=-I/usr/local/cuda/include/ --extra-
 ldflags=-L/usr/local/cuda/lib64/ --enable-nvenc --extra-
 cflags=-I/opt/intel/mediasdk/include --extra-
 ldflags=-L/opt/intel/mediasdk/lib --extra-
 ldflags=-L/opt/intel/mediasdk/plugins --enable-libmfx --enable-libass
 --enable-vaapi --disable-debug --enable-libvorbis --enable-libvpx
 --enable-libdrm --enable-opencl --enable-gpl --cpu=native --enable-opengl
 --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-openssl
 --extra-libs='-lpthread -lm -lz' --enable-nonfree
   libavutil      56. 28.100 / 56. 28.100
   libavcodec     58. 52.101 / 58. 52.101
   libavformat    58. 27.103 / 58. 27.103
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 53.101 /  7. 53.101
   libswscale      5.  4.101 /  5.  4.101
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Input #0, matroska,webm, from
 '/home/brainiarc7/Desktop/src/benchmarks/final/rv.mkv':
   Metadata:
     encoder         : libebml v1.3.7 + libmatroska v1.5.0
     creation_time   : 2019-05-09T10:09:00.000000Z
   Duration: 00:05:16.95, start: 0.000000, bitrate: 7889 kb/s
     Stream #0:0: Video: h264 (High), yuv420p(tv, bt470bg/bt709/bt709,
 progressive), 2560x1080 [SAR 1:1 DAR 64:27], 60 fps, 60 tbr, 1k tbn, 120
 tbc (default)
     Metadata:
       BPS-eng         : 7886082
       DURATION-eng    : 00:05:16.950000000
       NUMBER_OF_FRAMES-eng: 19015
       NUMBER_OF_BYTES-eng: 312436712
       _STATISTICS_WRITING_APP-eng: mkvmerge v33.1.0 ('Primrose') 64-bit
       _STATISTICS_WRITING_DATE_UTC-eng: 2019-05-09 10:09:00
       _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_vaapi))
 Press [q] to stop, [?] for help
 Output #0, mp4, to '/home/brainiarc7/Desktop/src/benchmarks/final/vaapi-
 ihd.mp4':
   Metadata:
     encoder         : Lavf58.27.103
     Stream #0:0: Video: h264 (h264_vaapi) (Main) (avc1 / 0x31637661),
 vaapi_vld, 2560x1080 [SAR 1:1 DAR 64:27], q=1-19, 7500 kb/s, 60 fps, 15360
 tbn, 60 tbc (default)
     Metadata:
       BPS-eng         : 7886082
       DURATION-eng    : 00:05:16.950000000
       NUMBER_OF_FRAMES-eng: 19015
       NUMBER_OF_BYTES-eng: 312436712
       _STATISTICS_WRITING_APP-eng: mkvmerge v33.1.0 ('Primrose') 64-bit
       _STATISTICS_WRITING_DATE_UTC-eng: 2019-05-09 10:09:00
       _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
       encoder         : Lavc58.52.101 h264_vaapi
 frame=   46 fps=0.0 q=-0.0 10000000000000000000000000000000size=       0kB
 time=00:00:00.70 bitrate=   0.5kbits/s speed=1.36x
 frame=   98 fps= 95 q=-0.0 10000000000000000000000000000000size=       0kB
 time=00:00:01.56 bitrate=   0.2kbits/s speed=1.52x
 frame=  150 fps= 97 q=-0.0 20000000000000000000000000000000size=     256kB
 time=00:00:02.43 bitrate= 862.0kbits/s speed=1.57x
 frame=  202 fps= 97 q=-0.0 20000000000000000000000000000000size=     256kB
 time=00:00:03.30 bitrate= 635.6kbits/s speed=1.59x
 frame=  254 fps= 98 q=-0.0 20000000000000000000000000000000size=     512kB
 time=00:00:04.16 bitrate=1006.7kbits/s speed=1.61x
 frame=  306 fps= 98 q=-0.0 20000000000000000000000000000000size=     512kB
 time=00:00:05.03 bitrate= 833.4kbits/s speed=1.62x
 frame=  358 fps= 98 q=-0.0 30000000000000000000000000000000size=     768kB
 time=00:00:05.90 bitrate=1066.4kbits/s speed=1.62x
 frame=  410 fps= 99 q=-0.0 30000000000000000000000000000000size=     768kB
 time=00:00:06.76 bitrate= 929.8kbits/s speed=1.63x
 frame=  460 fps= 99 q=-0.0 30000000000000000000000000000000size=    1536kB
 time=00:00:07.56 bitrate=1663.0kbits/s speed=1.62x
 frame=  510 fps= 99 q=-0.0 30000000000000000000000000000000size=    2304kB
 time=00:00:08.43 bitrate=2238.1kbits/s speed=1.63x
 frame=  562 fps= 99 q=-0.0 30000000000000000000000000000000size=    2304kB
 time=00:00:09.30 bitrate=2029.5kbits/s speed=1.63x
 frame=  614 fps= 99 q=-0.0 30000000000000000000000000000000size=    2560kB
 time=00:00:10.16 bitrate=2062.8kbits/s speed=1.64x
 frame=  666 fps= 99 q=-0.0 30000000000000000000000000000000size=    2560kB
 time=00:00:11.03 bitrate=1900.8kbits/s speed=1.64x
 frame=  718 fps= 99 q=-0.0 30000000000000000000000000000000size=    2560kB
 time=00:00:11.90 bitrate=1762.3kbits/s speed=1.64x
 frame=  770 fps= 99 q=-0.0 40000000000000000000000000000000size=    2816kB
 time=00:00:12.76 bitrate=1807.0kbits/s speed=1.64x
 frame=  819 fps= 99 q=-0.0 40000000000000000000000000000000size=    2816kB
 time=00:00:13.56 bitrate=1700.4kbits/s speed=1.64x
 frame=  870 fps= 99 q=-0.0 40000000000000000000000000000000size=    3072kB
 time=00:00:14.43 bitrate=1743.6kbits/s speed=1.64x
 frame=  922 fps= 99 q=-0.0 40000000000000000000000000000000size=    3072kB
 time=00:00:15.30 bitrate=1644.8kbits/s speed=1.65x
 frame=  974 fps= 99 q=-0.0 40000000000000000000000000000000size=    3072kB
 time=00:00:16.16 bitrate=1556.7kbits/s speed=1.65x
 frame= 1026 fps= 99 q=-0.0 40000000000000000000000000000000size=    3328kB
 time=00:00:17.03 bitrate=1600.6kbits/s speed=1.65x
 frame= 1077 fps=100 q=-0.0 40000000000000000000000000000000size=    3584kB
 time=00:00:17.90 bitrate=1640.2kbits/s speed=1.65x
 frame= 1126 fps= 99 q=-0.0 40000000000000000000000000000000size=    4096kB
 time=00:00:18.70 bitrate=1794.4kbits/s speed=1.65x
 frame= 1177 fps= 99 q=-0.0 40000000000000000000000000000000size=    4096kB
 time=00:00:19.56 bitrate=1714.9kbits/s speed=1.65x
 frame= 1226 fps= 99 q=-0.0 40000000000000000000000000000000size=    4608kB
 time=00:00:20.36 bitrate=1853.5kbits/s speed=1.65x
 frame= 1278 fps= 99 q=-0.0 40000000000000000000000000000000size=    4864kB
 time=00:00:21.23 bitrate=1876.6kbits/s speed=1.65x
 frame= 1328 fps= 99 q=-0.0 40000000000000000000000000000000size=    5376kB
 time=00:00:22.03 bitrate=1998.8kbits/s speed=1.65x
 frame= 1378 fps= 99 q=-0.0 40000000000000000000000000000000size=    5632kB
 time=00:00:22.90 bitrate=2014.7kbits/s speed=1.65x
 frame= 1427 fps= 99 q=-0.0 40000000000000000000000000000000size=    6144kB
 time=00:00:23.70 bitrate=2123.7kbits/s speed=1.65x
 frame= 1475 fps= 99 q=-0.0 40000000000000000000000000000000size=    6912kB
 time=00:00:24.50 bitrate=2311.2kbits/s speed=1.64x
 frame= 1526 fps= 99 q=-0.0 40000000000000000000000000000000size=    7424kB
 time=00:00:25.36 bitrate=2397.5kbits/s speed=1.65x
 frame= 1576 fps= 99 q=-0.0 50000000000000000000000000000000size=    8192kB
 time=00:00:26.16 bitrate=2564.7kbits/s speed=1.64x
 frame= 1626 fps= 99 q=-0.0 50000000000000000000000000000000size=    8704kB
 time=00:00:27.03 bitrate=2637.6kbits/s speed=1.65x
 frame= 1678 fps= 99 q=-0.0 50000000000000000000000000000000size=    9216kB
 time=00:00:27.90 bitrate=2706.0kbits/s speed=1.65x
 frame= 1726 fps= 99 q=-0.0 50000000000000000000000000000000size=   10240kB
 time=00:00:28.70 bitrate=2922.9kbits/s speed=1.64x
 frame= 1774 fps= 99 q=-0.0 50000000000000000000000000000000size=   10240kB
 time=00:00:29.50 bitrate=2843.6kbits/s speed=1.64x
 frame= 1822 fps= 99 q=-0.0 50000000000000000000000000000000size=   10752kB
 time=00:00:30.30 bitrate=2906.9kbits/s speed=1.64x
 frame= 1873 fps= 99 q=-0.0 50000000000000000000000000000000size=   11008kB
 time=00:00:31.16 bitrate=2893.4kbits/s speed=1.64x
 frame= 1922 fps= 99 q=-0.0 50000000000000000000000000000000size=   11264kB
 time=00:00:31.96 bitrate=2886.6kbits/s speed=1.64x
 frame= 1970 fps= 99 q=-0.0 50000000000000000000000000000000size=   11520kB
 time=00:00:32.76 bitrate=2880.1kbits/s speed=1.64x
 frame= 2018 fps= 98 q=-0.0 50000000000000000000000000000000size=   11520kB
 time=00:00:33.56 bitrate=2811.5kbits/s speed=1.64x
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 time=00:00:34.30 bitrate=2873.7kbits/s speed=1.63x
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 time=00:00:35.10 bitrate=2808.2kbits/s speed=1.63x
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 time=00:00:35.96 bitrate=2857.1kbits/s speed=1.63x
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 time=00:00:36.76 bitrate=2794.9kbits/s speed=1.63x
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 time=00:00:37.56 bitrate=2902.9kbits/s speed=1.63x
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 time=00:00:38.36 bitrate=3170.3kbits/s speed=1.63x
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 time=00:00:39.16 bitrate=3319.8kbits/s speed=1.63x
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 time=00:00:39.96 bitrate=3568.1kbits/s speed=1.63x
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 time=00:00:40.70 bitrate=3658.4kbits/s speed=1.62x
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 time=00:00:41.50 bitrate=3790.0kbits/s speed=1.62x
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 time=00:00:42.30 bitrate=3867.1kbits/s speed=1.62x
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 time=00:00:43.10 bitrate=3844.0kbits/s speed=1.62x
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 time=00:00:43.95 bitrate=3769.6kbits/s speed=1.62x
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 time=00:00:44.70 bitrate=3941.0kbits/s speed=1.62x
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 time=00:00:45.50 bitrate=4148.2kbits/s speed=1.62x
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 time=00:00:47.03 bitrate=4146.7kbits/s speed=1.61x
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 time=00:00:47.90 bitrate=4203.1kbits/s speed=1.61x
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 time=00:00:48.70 bitrate=4306.3kbits/s speed=1.61x
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 time=00:00:49.50 bitrate=4363.8kbits/s speed=1.61x
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 time=00:00:50.36 bitrate=4455.2kbits/s speed=1.61x
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 time=00:00:51.16 bitrate=4467.6kbits/s speed=1.61x
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 time=00:00:51.96 bitrate=4519.8kbits/s speed=1.61x
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 time=00:00:52.76 bitrate=4570.5kbits/s speed=1.61x
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 time=00:00:53.56 bitrate=4619.7kbits/s speed=1.61x
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 time=00:00:54.43 bitrate=4661.8kbits/s speed=1.61x
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 time=00:00:55.96 bitrate=4721.4kbits/s speed=1.61x
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 time=00:00:56.83 bitrate=4760.1kbits/s speed=1.61x
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 time=00:00:57.70 bitrate=4797.6kbits/s speed=1.61x
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 time=00:00:58.50 bitrate=4839.6kbits/s speed=1.61x
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 time=00:00:59.36 bitrate=4804.3kbits/s speed=1.61x
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 time=00:01:00.23 bitrate=4769.9kbits/s speed=1.61x
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 time=00:01:01.03 bitrate=4741.8kbits/s speed=1.61x
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 time=00:01:01.83 bitrate=4680.4kbits/s speed=1.61x
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 time=00:01:02.63 bitrate=4687.6kbits/s speed=1.61x
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 time=00:01:03.50 bitrate=4656.7kbits/s speed=1.61x
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 time=00:01:04.23 bitrate=4668.8kbits/s speed=1.61x
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 time=00:01:05.03 bitrate=4675.9kbits/s speed=1.61x
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 time=00:01:05.76 bitrate=4687.5kbits/s speed=1.61x
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 time=00:01:06.56 bitrate=4725.7kbits/s speed=1.61x
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 time=00:01:07.36 bitrate=4731.8kbits/s speed=1.61x
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 time=00:01:08.03 bitrate=4747.1kbits/s speed= 1.6x
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 time=00:01:08.63 bitrate=4736.2kbits/s speed= 1.6x
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 time=00:01:09.30 bitrate=4690.6kbits/s speed= 1.6x
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 time=00:01:09.96 bitrate=4675.9kbits/s speed=1.59x
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 time=00:01:11.30 bitrate=4647.3kbits/s speed=1.59x
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 time=00:01:11.96 bitrate=4662.5kbits/s speed=1.58x
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 time=00:01:12.63 bitrate=4648.6kbits/s speed=1.58x
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 time=00:01:13.30 bitrate=4634.9kbits/s speed=1.58x
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 time=00:01:14.70 bitrate=4548.0kbits/s speed=1.57x
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 time=00:01:15.43 bitrate=4531.6kbits/s speed=1.57x
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 time=00:01:16.16 bitrate=4543.1kbits/s speed=1.57x
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 time=00:01:17.03 bitrate=4492.0kbits/s speed=1.57x
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 time=00:01:17.76 bitrate=4449.6kbits/s speed=1.57x
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 time=00:01:18.63 bitrate=4427.2kbits/s speed=1.57x
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 time=00:01:19.30 bitrate=4390.0kbits/s speed=1.57x
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 time=00:01:20.03 bitrate=4402.2kbits/s speed=1.57x
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 time=00:01:20.76 bitrate=4388.2kbits/s speed=1.57x
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 time=00:01:21.56 bitrate=4345.1kbits/s speed=1.57x
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 time=00:01:22.23 bitrate=4335.4kbits/s speed=1.57x
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 time=00:01:23.70 bitrate=4284.5kbits/s speed=1.56x
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 time=00:01:24.43 bitrate=4272.1kbits/s speed=1.56x
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 time=00:01:25.16 bitrate=4235.3kbits/s speed=1.56x
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 time=00:01:25.90 bitrate=4296.8kbits/s speed=1.56x
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 time=00:01:26.63 bitrate=4333.1kbits/s speed=1.56x
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 time=00:01:27.36 bitrate=4320.7kbits/s speed=1.56x
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 time=00:01:28.03 bitrate=4335.7kbits/s speed=1.56x
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 time=00:01:28.70 bitrate=4350.4kbits/s speed=1.55x
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 time=00:01:29.43 bitrate=4338.1kbits/s speed=1.55x
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 time=00:01:30.16 bitrate=4326.1kbits/s speed=1.55x
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 time=00:01:30.90 bitrate=4337.3kbits/s speed=1.55x
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 time=00:01:31.63 bitrate=4348.4kbits/s speed=1.55x
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 time=00:01:32.36 bitrate=4382.0kbits/s speed=1.55x
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 time=00:01:33.10 bitrate=4370.0kbits/s speed=1.55x
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 time=00:01:33.83 bitrate=4402.9kbits/s speed=1.55x
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 time=00:01:34.56 bitrate=4390.9kbits/s speed=1.55x
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 time=00:01:35.30 bitrate=4401.2kbits/s speed=1.54x
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 time=00:01:36.03 bitrate=4389.4kbits/s speed=1.54x
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 time=00:01:36.76 bitrate=4399.5kbits/s speed=1.54x
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 time=00:01:37.50 bitrate=4366.4kbits/s speed=1.54x
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 time=00:01:38.23 bitrate=4397.8kbits/s speed=1.54x
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 time=00:01:38.96 bitrate=4407.6kbits/s speed=1.54x
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 time=00:01:39.70 bitrate=4396.2kbits/s speed=1.54x
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 time=00:01:40.43 bitrate=4405.9kbits/s speed=1.54x
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 time=00:01:41.16 bitrate=4394.7kbits/s speed=1.54x
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 time=00:01:41.90 bitrate=4404.2kbits/s speed=1.54x
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 time=00:01:42.63 bitrate=4474.9kbits/s speed=1.54x
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 time=00:01:43.36 bitrate=4463.5kbits/s speed=1.54x
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 time=00:01:44.10 bitrate=4492.5kbits/s speed=1.53x
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 time=00:01:44.76 bitrate=4503.9kbits/s speed=1.53x
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 time=00:01:45.50 bitrate=4512.4kbits/s speed=1.53x
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 time=00:01:46.23 bitrate=4540.4kbits/s speed=1.53x
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 time=00:01:46.90 bitrate=4551.4kbits/s speed=1.53x
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 time=00:01:47.63 bitrate=4578.8kbits/s speed=1.53x
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 time=00:01:48.30 bitrate=4589.3kbits/s speed=1.53x
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 time=00:01:49.03 bitrate=4596.9kbits/s speed=1.53x
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 time=00:01:49.70 bitrate=4607.2kbits/s speed=1.53x
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 time=00:01:50.36 bitrate=4636.4kbits/s speed=1.52x
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 time=00:01:51.10 bitrate=4662.4kbits/s speed=1.52x
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 time=00:01:51.76 bitrate=4672.2kbits/s speed=1.52x
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 time=00:01:52.43 bitrate=4681.8kbits/s speed=1.52x
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 time=00:01:53.16 bitrate=4707.0kbits/s speed=1.52x
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 time=00:01:53.90 bitrate=4713.5kbits/s speed=1.52x
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 time=00:01:54.56 bitrate=4722.7kbits/s speed=1.52x
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 time=00:01:55.36 bitrate=4744.5kbits/s speed=1.52x
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 time=00:01:56.03 bitrate=4771.5kbits/s speed=1.52x
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 time=00:01:56.76 bitrate=4777.4kbits/s speed=1.52x
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 time=00:01:57.43 bitrate=4786.0kbits/s speed=1.52x
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 time=00:01:58.16 bitrate=4809.5kbits/s speed=1.51x
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 time=00:01:58.83 bitrate=4817.9kbits/s speed=1.51x
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 time=00:01:59.56 bitrate=4823.4kbits/s speed=1.51x
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 time=00:02:00.23 bitrate=4831.5kbits/s speed=1.51x
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 time=00:02:00.90 bitrate=4839.6kbits/s speed=1.51x
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 time=00:02:01.56 bitrate=4830.3kbits/s speed=1.51x
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 time=00:02:02.23 bitrate=4855.4kbits/s speed=1.51x
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 time=00:02:02.96 bitrate=4860.6kbits/s speed=1.51x
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 time=00:02:03.70 bitrate=4848.7kbits/s speed=1.51x
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 time=00:02:04.43 bitrate=4853.8kbits/s speed=1.51x
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 time=00:02:05.16 bitrate=4858.9kbits/s speed=1.51x
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 time=00:02:05.90 bitrate=4847.3kbits/s speed=1.51x
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 time=00:02:06.56 bitrate=4854.9kbits/s speed= 1.5x
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 time=00:02:07.23 bitrate=4862.4kbits/s speed= 1.5x
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 time=00:02:07.95 bitrate=4851.6kbits/s speed= 1.5x
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 time=00:02:08.63 bitrate=4858.4kbits/s speed= 1.5x
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 time=00:02:09.36 bitrate=4847.1kbits/s speed= 1.5x
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 time=00:02:10.03 bitrate=4822.2kbits/s speed= 1.5x
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 time=00:02:10.76 bitrate=4827.2kbits/s speed= 1.5x
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 time=00:02:11.43 bitrate=4834.7kbits/s speed= 1.5x
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 time=00:02:12.16 bitrate=4871.3kbits/s speed= 1.5x
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 time=00:02:12.83 bitrate=4862.7kbits/s speed= 1.5x
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 time=00:02:13.50 bitrate=4854.1kbits/s speed= 1.5x
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 time=00:02:14.23 bitrate=4843.2kbits/s speed= 1.5x
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 time=00:02:14.96 bitrate=4816.9kbits/s speed= 1.5x
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 time=00:02:15.63 bitrate=4808.7kbits/s speed= 1.5x
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 time=00:02:16.36 bitrate=4798.2kbits/s speed= 1.5x
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 time=00:02:17.10 bitrate=4787.8kbits/s speed= 1.5x
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 time=00:02:17.83 bitrate=4777.6kbits/s speed= 1.5x
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 time=00:02:18.50 bitrate=4784.8kbits/s speed=1.49x
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 time=00:02:19.16 bitrate=4792.1kbits/s speed=1.49x
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 time=00:02:19.90 bitrate=4796.9kbits/s speed=1.49x
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 time=00:02:20.56 bitrate=4804.0kbits/s speed=1.49x
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 time=00:02:21.30 bitrate=4793.9kbits/s speed=1.49x
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 time=00:02:21.96 bitrate=4815.7kbits/s speed=1.49x
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 time=00:02:22.63 bitrate=4822.6kbits/s speed=1.49x
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 time=00:02:23.30 bitrate=4814.8kbits/s speed=1.49x
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 time=00:02:24.03 bitrate=4848.5kbits/s speed=1.49x
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 time=00:02:24.76 bitrate=4838.5kbits/s speed=1.49x
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 time=00:02:25.50 bitrate=4814.1kbits/s speed=1.49x
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 time=00:02:26.16 bitrate=4820.8kbits/s speed=1.49x
 frame= 8814 fps= 89 q=-0.0 70000000000000000000000000000000size=   86784kB
 time=00:02:26.83 bitrate=4841.8kbits/s speed=1.49x
 frame= 8858 fps= 89 q=-0.0 70000000000000000000000000000000size=   87040kB
 time=00:02:27.56 bitrate=4831.9kbits/s speed=1.49x
 frame= 8900 fps= 89 q=-0.0 70000000000000000000000000000000size=   88064kB
 time=00:02:28.23 bitrate=4866.8kbits/s speed=1.49x
 frame= 8942 fps= 89 q=-0.0 70000000000000000000000000000000size=   88576kB
 time=00:02:28.96 bitrate=4871.0kbits/s speed=1.49x
 frame= 8984 fps= 89 q=-0.0 70000000000000000000000000000000size=   89088kB
 time=00:02:29.63 bitrate=4877.3kbits/s speed=1.48x
 frame= 9025 fps= 89 q=-0.0 70000000000000000000000000000000size=   89856kB
 time=00:02:30.36 bitrate=4895.4kbits/s speed=1.48x
 frame= 9068 fps= 89 q=-0.0 70000000000000000000000000000000size=   89856kB
 time=00:02:31.03 bitrate=4873.8kbits/s speed=1.48x
 frame= 9109 fps= 89 q=-0.0 70000000000000000000000000000000size=   90112kB
 time=00:02:31.76 bitrate=4864.0kbits/s speed=1.48x
 frame= 9150 fps= 89 q=-0.0 70000000000000000000000000000000size=   90880kB
 time=00:02:32.43 bitrate=4884.0kbits/s speed=1.48x
 frame= 9194 fps= 89 q=-0.0 70000000000000000000000000000000size=   91392kB
 time=00:02:33.16 bitrate=4888.0kbits/s speed=1.48x
 frame= 9234 fps= 89 q=-0.0 70000000000000000000000000000000size=   91648kB
 time=00:02:33.83 bitrate=4880.5kbits/s speed=1.48x
 frame= 9277 fps= 89 q=-0.0 70000000000000000000000000000000size=   92160kB
 time=00:02:34.56 bitrate=4884.5kbits/s speed=1.48x
 frame= 9318 fps= 89 q=-0.0 70000000000000000000000000000000size=   92672kB
 time=00:02:35.23 bitrate=4890.5kbits/s speed=1.48x
 frame= 9358 fps= 89 q=-0.0 70000000000000000000000000000000size=   92928kB
 time=00:02:35.90 bitrate=4883.0kbits/s speed=1.48x
 frame= 9399 fps= 89 q=-0.0 70000000000000000000000000000000size=   93696kB
 time=00:02:36.56 bitrate=4902.4kbits/s speed=1.48x
 frame= 9437 fps= 89 q=-0.0 70000000000000000000000000000000size=   93952kB
 time=00:02:37.23 bitrate=4895.0kbits/s speed=1.48x
 frame= 9480 fps= 89 q=-0.0 70000000000000000000000000000000size=   93952kB
 time=00:02:37.95 bitrate=4872.8kbits/s speed=1.48x
 frame= 9519 fps= 89 q=-0.0 70000000000000000000000000000000size=   94464kB
 time=00:02:38.56 bitrate=4880.3kbits/s speed=1.48x
 frame= 9559 fps= 89 q=-0.0 70000000000000000000000000000000size=   94720kB
 time=00:02:39.23 bitrate=4873.0kbits/s speed=1.48x
 frame= 9601 fps= 89 q=-0.0 70000000000000000000000000000000size=   95488kB
 time=00:02:39.96 bitrate=4890.0kbits/s speed=1.48x
 frame= 9642 fps= 89 q=-0.0 70000000000000000000000000000000size=   96512kB
 time=00:02:40.63 bitrate=4921.9kbits/s speed=1.47x
 frame= 9682 fps= 88 q=-0.0 70000000000000000000000000000000size=   97024kB
 time=00:02:41.30 bitrate=4927.6kbits/s speed=1.47x
 frame= 9723 fps= 88 q=-0.0 70000000000000000000000000000000size=   97792kB
 time=00:02:41.96 bitrate=4946.2kbits/s speed=1.47x
 frame= 9764 fps= 88 q=-0.0 70000000000000000000000000000000size=   98304kB
 time=00:02:42.63 bitrate=4951.7kbits/s speed=1.47x
 frame= 9806 fps= 88 q=-0.0 70000000000000000000000000000000size=   98560kB
 time=00:02:43.36 bitrate=4942.3kbits/s speed=1.47x
 frame= 9850 fps= 88 q=-0.0 70000000000000000000000000000000size=   99072kB
 time=00:02:44.10 bitrate=4945.8kbits/s speed=1.47x
 frame= 9893 fps= 88 q=-0.0 70000000000000000000000000000000size=   99072kB
 time=00:02:44.83 bitrate=4923.7kbits/s speed=1.47x
 frame= 9937 fps= 88 q=-0.0 70000000000000000000000000000000size=   99328kB
 time=00:02:45.56 bitrate=4914.6kbits/s speed=1.47x
 frame= 9978 fps= 88 q=-0.0 70000000000000000000000000000000size=   99328kB
 time=00:02:46.23 bitrate=4894.9kbits/s speed=1.47x
 frame=10022 fps= 88 q=-0.0 70000000000000000000000000000000size=   99328kB
 time=00:02:46.96 bitrate=4873.4kbits/s speed=1.47x
 frame=10066 fps= 88 q=-0.0 70000000000000000000000000000000size=   99584kB
 time=00:02:47.70 bitrate=4864.6kbits/s speed=1.47x
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 time=00:02:48.50 bitrate=4841.5kbits/s speed=1.47x
 frame=10165 fps= 88 q=-0.0 70000000000000000000000000000000size=   99584kB
 time=00:02:49.36 bitrate=4816.7kbits/s speed=1.47x
 frame=10214 fps= 88 q=-0.0 70000000000000000000000000000000size=   99840kB
 time=00:02:50.16 bitrate=4806.4kbits/s speed=1.47x
 frame=10266 fps= 88 q=-0.0 70000000000000000000000000000000size=   99840kB
 time=00:02:51.03 bitrate=4782.0kbits/s speed=1.47x
 frame=10318 fps= 89 q=-0.0 70000000000000000000000000000000size=  100096kB
 time=00:02:51.90 bitrate=4770.1kbits/s speed=1.47x
 frame=10370 fps= 89 q=-0.0 70000000000000000000000000000000size=  100608kB
 time=00:02:52.76 bitrate=4770.5kbits/s speed=1.48x
 frame=10421 fps= 89 q=-0.0 70000000000000000000000000000000size=  100608kB
 time=00:02:53.63 bitrate=4746.7kbits/s speed=1.48x
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 time=00:02:54.43 bitrate=4736.9kbits/s speed=1.48x
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 time=00:02:55.23 bitrate=4715.3kbits/s speed=1.48x
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 time=00:02:56.10 bitrate=4704.0kbits/s speed=1.48x
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 time=00:02:56.96 bitrate=4692.8kbits/s speed=1.48x
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 time=00:02:57.83 bitrate=4669.9kbits/s speed=1.48x
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 time=00:02:58.63 bitrate=4649.0kbits/s speed=1.48x
 frame=10772 fps= 89 q=-0.0 70000000000000000000000000000000size=  101888kB
 time=00:02:59.43 bitrate=4651.7kbits/s speed=1.48x
 frame=10822 fps= 89 q=-0.0 70000000000000000000000000000000size=  102144kB
 time=00:03:00.30 bitrate=4641.0kbits/s speed=1.48x
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 time=00:03:01.16 bitrate=4630.3kbits/s speed=1.48x
 frame=10925 fps= 89 q=-0.0 70000000000000000000000000000000size=  102912kB
 time=00:03:02.03 bitrate=4631.3kbits/s speed=1.48x
 frame=10974 fps= 89 q=-0.0 70000000000000000000000000000000size=  103424kB
 time=00:03:02.83 bitrate=4634.0kbits/s speed=1.48x
 frame=11025 fps= 89 q=-0.0 70000000000000000000000000000000size=  103680kB
 time=00:03:03.70 bitrate=4623.6kbits/s speed=1.49x
 frame=11074 fps= 89 q=-0.0 70000000000000000000000000000000size=  104192kB
 time=00:03:04.50 bitrate=4626.2kbits/s speed=1.49x
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 time=00:03:05.36 bitrate=4604.6kbits/s speed=1.49x
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 time=00:03:06.23 bitrate=4594.4kbits/s speed=1.49x
 frame=11230 fps= 89 q=-0.0 70000000000000000000000000000000size=  104448kB
 time=00:03:07.10 bitrate=4573.2kbits/s speed=1.49x
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 time=00:03:07.96 bitrate=4563.2kbits/s speed=1.49x
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 time=00:03:08.76 bitrate=4555.0kbits/s speed=1.49x
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 time=00:03:09.63 bitrate=4534.2kbits/s speed=1.49x
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 time=00:03:10.50 bitrate=4524.6kbits/s speed=1.49x
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 time=00:03:11.36 bitrate=4504.1kbits/s speed=1.49x
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 time=00:03:12.23 bitrate=4494.7kbits/s speed=1.49x
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 time=00:03:13.03 bitrate=4476.0kbits/s speed=1.49x
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 time=00:03:13.90 bitrate=4456.0kbits/s speed=1.49x
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 time=00:03:14.76 bitrate=4447.0kbits/s speed=1.49x
 frame=11740 fps= 90 q=-0.0 80000000000000000000000000000000size=  105728kB
 time=00:03:15.56 bitrate=4428.8kbits/s speed=1.49x
 frame=11789 fps= 90 q=-0.0 80000000000000000000000000000000size=  105984kB
 time=00:03:16.43 bitrate=4419.9kbits/s speed= 1.5x
 frame=11838 fps= 90 q=-0.0 80000000000000000000000000000000size=  105984kB
 time=00:03:17.23 bitrate=4402.0kbits/s speed= 1.5x
 frame=11887 fps= 90 q=-0.0 80000000000000000000000000000000size=  106240kB
 time=00:03:18.03 bitrate=4394.8kbits/s speed= 1.5x
 frame=11938 fps= 90 q=-0.0 80000000000000000000000000000000size=  106496kB
 time=00:03:18.90 bitrate=4386.2kbits/s speed= 1.5x
 frame=11990 fps= 90 q=-0.0 80000000000000000000000000000000size=  106496kB
 time=00:03:19.76 bitrate=4367.2kbits/s speed= 1.5x
 frame=12042 fps= 90 q=-0.0 80000000000000000000000000000000size=  106752kB
 time=00:03:20.63 bitrate=4358.8kbits/s speed= 1.5x
 frame=12094 fps= 90 q=-0.0 80000000000000000000000000000000size=  106752kB
 time=00:03:21.50 bitrate=4340.0kbits/s speed= 1.5x
 frame=12146 fps= 90 q=-0.0 80000000000000000000000000000000size=  107008kB
 time=00:03:22.36 bitrate=4331.8kbits/s speed= 1.5x
 frame=12198 fps= 90 q=-0.0 80000000000000000000000000000000size=  107008kB
 time=00:03:23.23 bitrate=4313.3kbits/s speed= 1.5x
 frame=12250 fps= 90 q=-0.0 80000000000000000000000000000000size=  107008kB
 time=00:03:24.10 bitrate=4295.0kbits/s speed= 1.5x
 frame=12302 fps= 90 q=-0.0 80000000000000000000000000000000size=  107264kB
 time=00:03:24.96 bitrate=4287.1kbits/s speed= 1.5x
 frame=12354 fps= 90 q=-0.0 80000000000000000000000000000000size=  107776kB
 time=00:03:25.83 bitrate=4289.4kbits/s speed= 1.5x
 frame=12403 fps= 90 q=-0.0 80000000000000000000000000000000size=  108288kB
 time=00:03:26.63 bitrate=4293.1kbits/s speed= 1.5x
 frame=12454 fps= 90 q=-0.0 80000000000000000000000000000000size=  108288kB
 time=00:03:27.50 bitrate=4275.2kbits/s speed= 1.5x
 frame=12503 fps= 90 q=-0.0 80000000000000000000000000000000size=  108544kB
 time=00:03:28.30 bitrate=4268.8kbits/s speed= 1.5x
 frame=12552 fps= 90 q=-0.0 80000000000000000000000000000000size=  108544kB
 time=00:03:29.10 bitrate=4252.5kbits/s speed= 1.5x
 frame=12601 fps= 90 q=-0.0 80000000000000000000000000000000size=  108800kB
 time=00:03:29.96 bitrate=4244.9kbits/s speed= 1.5x
 frame=12654 fps= 90 q=-0.0 80000000000000000000000000000000size=  108800kB
 time=00:03:30.83 bitrate=4227.5kbits/s speed= 1.5x
 frame=12705 fps= 90 q=-0.0 80000000000000000000000000000000size=  108800kB
 time=00:03:31.70 bitrate=4210.2kbits/s speed=1.51x
 frame=12754 fps= 90 q=-0.0 80000000000000000000000000000000size=  109056kB
 time=00:03:32.50 bitrate=4204.2kbits/s speed=1.51x
 frame=12805 fps= 90 q=-0.0 80000000000000000000000000000000size=  109056kB
 time=00:03:33.36 bitrate=4187.1kbits/s speed=1.51x
 frame=12851 fps= 90 q=-0.0 80000000000000000000000000000000size=  109312kB
 time=00:03:34.10 bitrate=4182.6kbits/s speed=1.51x
 frame=12900 fps= 90 q=-0.0 80000000000000000000000000000000size=  109312kB
 time=00:03:34.90 bitrate=4167.0kbits/s speed=1.51x
 frame=12950 fps= 90 q=-0.0 80000000000000000000000000000000size=  109312kB
 time=00:03:35.76 bitrate=4150.2kbits/s speed=1.51x
 frame=12998 fps= 90 q=-0.0 80000000000000000000000000000000size=  109568kB
 time=00:03:36.56 bitrate=4144.6kbits/s speed=1.51x
 frame=13050 fps= 91 q=-0.0 80000000000000000000000000000000size=  109824kB
 time=00:03:37.43 bitrate=4137.7kbits/s speed=1.51x
 frame=13098 fps= 91 q=-0.0 80000000000000000000000000000000size=  110336kB
 time=00:03:38.23 bitrate=4141.8kbits/s speed=1.51x
 frame=13147 fps= 91 q=-0.0 80000000000000000000000000000000size=  110336kB
 time=00:03:39.03 bitrate=4126.6kbits/s speed=1.51x
 frame=13198 fps= 91 q=-0.0 80000000000000000000000000000000size=  110336kB
 time=00:03:39.90 bitrate=4110.4kbits/s speed=1.51x
 frame=13249 fps= 91 q=-0.0 80000000000000000000000000000000size=  110592kB
 time=00:03:40.76 bitrate=4103.7kbits/s speed=1.51x
 frame=13298 fps= 91 q=-0.0 80000000000000000000000000000000size=  110592kB
 time=00:03:41.56 bitrate=4088.9kbits/s speed=1.51x
 frame=13350 fps= 91 q=-0.0 80000000000000000000000000000000size=  110848kB
 time=00:03:42.43 bitrate=4082.4kbits/s speed=1.51x
 frame=13402 fps= 91 q=-0.0 80000000000000000000000000000000size=  110848kB
 time=00:03:43.30 bitrate=4066.6kbits/s speed=1.51x
 frame=13453 fps= 91 q=-0.0 80000000000000000000000000000000size=  111104kB
 time=00:03:44.16 bitrate=4060.2kbits/s speed=1.51x
 frame=13502 fps= 91 q=-0.0 80000000000000000000000000000000size=  111104kB
 time=00:03:44.96 bitrate=4045.8kbits/s speed=1.51x
 frame=13553 fps= 91 q=-0.0 80000000000000000000000000000000size=  111104kB
 time=00:03:45.83 bitrate=4030.2kbits/s speed=1.51x
 frame=13602 fps= 91 q=-0.0 80000000000000000000000000000000size=  111360kB
 time=00:03:46.63 bitrate=4025.3kbits/s speed=1.51x
 frame=13654 fps= 91 q=-0.0 80000000000000000000000000000000size=  111360kB
 time=00:03:47.50 bitrate=4009.9kbits/s speed=1.51x
 frame=13705 fps= 91 q=-0.0 80000000000000000000000000000000size=  111616kB
 time=00:03:48.36 bitrate=4003.9kbits/s speed=1.51x
 frame=13754 fps= 91 q=-0.0 80000000000000000000000000000000size=  111616kB
 time=00:03:49.16 bitrate=3989.9kbits/s speed=1.51x
 frame=13802 fps= 91 q=-0.0 80000000000000000000000000000000size=  111872kB
 time=00:03:49.96 bitrate=3985.2kbits/s speed=1.51x
 frame=13850 fps= 91 q=-0.0 80000000000000000000000000000000size=  111872kB
 time=00:03:50.76 bitrate=3971.4kbits/s speed=1.51x
 frame=13897 fps= 91 q=-0.0 80000000000000000000000000000000size=  111872kB
 time=00:03:51.56 bitrate=3957.6kbits/s speed=1.52x
 frame=13942 fps= 91 q=-0.0 80000000000000000000000000000000size=  112128kB
 time=00:03:52.30 bitrate=3954.2kbits/s speed=1.51x
 frame=13986 fps= 91 q=-0.0 80000000000000000000000000000000size=  112128kB
 time=00:03:53.03 bitrate=3941.7kbits/s speed=1.51x
 frame=14034 fps= 91 q=-0.0 80000000000000000000000000000000size=  112128kB
 time=00:03:53.83 bitrate=3928.2kbits/s speed=1.51x
 frame=14080 fps= 91 q=-0.0 80000000000000000000000000000000size=  112384kB
 time=00:03:54.56 bitrate=3924.9kbits/s speed=1.51x
 frame=14130 fps= 91 q=-0.0 80000000000000000000000000000000size=  112640kB
 time=00:03:55.43 bitrate=3919.4kbits/s speed=1.52x
 frame=14180 fps= 91 q=-0.0 80000000000000000000000000000000size=  113152kB
 time=00:03:56.23 bitrate=3923.8kbits/s speed=1.52x
 frame=14230 fps= 91 q=-0.0 80000000000000000000000000000000size=  113152kB
 time=00:03:57.10 bitrate=3909.5kbits/s speed=1.52x
 frame=14281 fps= 91 q=-0.0 80000000000000000000000000000000size=  113408kB
 time=00:03:57.96 bitrate=3904.1kbits/s speed=1.52x
 frame=14330 fps= 91 q=-0.0 80000000000000000000000000000000size=  113408kB
 time=00:03:58.76 bitrate=3891.0kbits/s speed=1.52x
 frame=14381 fps= 91 q=-0.0 80000000000000000000000000000000size=  113408kB
 time=00:03:59.63 bitrate=3876.9kbits/s speed=1.52x
 frame=14426 fps= 91 q=-0.0 80000000000000000000000000000000size=  113920kB
 time=00:04:00.36 bitrate=3882.5kbits/s speed=1.52x
 frame=14476 fps= 91 q=-0.0 80000000000000000000000000000000size=  113920kB
 time=00:04:01.16 bitrate=3869.7kbits/s speed=1.52x
 frame=14522 fps= 91 q=-0.0 80000000000000000000000000000000size=  114176kB
 time=00:04:01.96 bitrate=3865.5kbits/s speed=1.52x
 frame=14574 fps= 91 q=-0.0 80000000000000000000000000000000size=  114176kB
 time=00:04:02.83 bitrate=3851.7kbits/s speed=1.52x
 frame=14624 fps= 91 q=-0.0 80000000000000000000000000000000size=  114176kB
 time=00:04:03.63 bitrate=3839.1kbits/s speed=1.52x
 frame=14672 fps= 91 q=-0.0 80000000000000000000000000000000size=  114432kB
 time=00:04:04.43 bitrate=3835.1kbits/s speed=1.52x
 frame=14722 fps= 91 q=-0.0 80000000000000000000000000000000size=  114432kB
 time=00:04:05.30 bitrate=3821.6kbits/s speed=1.52x
 frame=14772 fps= 91 q=-0.0 80000000000000000000000000000000size=  114688kB
 time=00:04:06.10 bitrate=3817.7kbits/s speed=1.52x
 frame=14822 fps= 91 q=-0.0 80000000000000000000000000000000size=  114944kB
 time=00:04:06.96 bitrate=3812.7kbits/s speed=1.52x
 frame=14869 fps= 91 q=-0.0 80000000000000000000000000000000size=  114944kB
 time=00:04:07.76 bitrate=3800.4kbits/s speed=1.52x
 frame=14918 fps= 91 q=-0.0 80000000000000000000000000000000size=  115200kB
 time=00:04:08.56 bitrate=3796.6kbits/s speed=1.52x
 frame=14970 fps= 91 q=-0.0 80000000000000000000000000000000size=  115200kB
 time=00:04:09.43 bitrate=3783.4kbits/s speed=1.52x
 frame=15018 fps= 91 q=-0.0 80000000000000000000000000000000size=  115456kB
 time=00:04:10.23 bitrate=3779.7kbits/s speed=1.52x
 frame=15068 fps= 91 q=-0.0 80000000000000000000000000000000size=  115456kB
 time=00:04:11.03 bitrate=3767.7kbits/s speed=1.52x
 frame=15117 fps= 91 q=-0.0 80000000000000000000000000000000size=  115456kB
 time=00:04:11.90 bitrate=3754.7kbits/s speed=1.52x
 frame=15166 fps= 91 q=-0.0 80000000000000000000000000000000size=  115712kB
 time=00:04:12.70 bitrate=3751.1kbits/s speed=1.52x
 frame=15218 fps= 91 q=-0.0 80000000000000000000000000000000size=  115712kB
 time=00:04:13.56 bitrate=3738.3kbits/s speed=1.52x
 frame=15268 fps= 91 q=-0.0 80000000000000000000000000000000size=  115968kB
 time=00:04:14.36 bitrate=3734.8kbits/s speed=1.52x
 frame=15318 fps= 91 q=-0.0 80000000000000000000000000000000size=  115968kB
 time=00:04:15.23 bitrate=3722.1kbits/s speed=1.52x
 frame=15370 fps= 91 q=-0.0 80000000000000000000000000000000size=  116224kB
 time=00:04:16.10 bitrate=3717.7kbits/s speed=1.52x
 frame=15422 fps= 91 q=-0.0 80000000000000000000000000000000size=  116224kB
 time=00:04:16.96 bitrate=3705.2kbits/s speed=1.52x
 frame=15472 fps= 91 q=-0.0 80000000000000000000000000000000size=  116480kB
 time=00:04:17.76 bitrate=3701.8kbits/s speed=1.52x
 frame=15522 fps= 92 q=-0.0 80000000000000000000000000000000size=  116736kB
 time=00:04:18.63 bitrate=3697.5kbits/s speed=1.52x
 frame=15570 fps= 92 q=-0.0 80000000000000000000000000000000size=  116736kB
 time=00:04:19.43 bitrate=3686.1kbits/s speed=1.52x
 frame=15622 fps= 92 q=-0.0 80000000000000000000000000000000size=  116992kB
 time=00:04:20.30 bitrate=3681.9kbits/s speed=1.53x
 frame=15674 fps= 92 q=-0.0 80000000000000000000000000000000size=  117248kB
 time=00:04:21.16 bitrate=3677.7kbits/s speed=1.53x
 frame=15724 fps= 92 q=-0.0 80000000000000000000000000000000size=  117504kB
 time=00:04:21.96 bitrate=3674.5kbits/s speed=1.53x
 frame=15775 fps= 92 q=-0.0 80000000000000000000000000000000size=  117760kB
 time=00:04:22.83 bitrate=3670.3kbits/s speed=1.53x
 frame=15823 fps= 92 q=-0.0 80000000000000000000000000000000size=  117760kB
 time=00:04:23.63 bitrate=3659.2kbits/s speed=1.53x
 frame=15871 fps= 92 q=-0.0 80000000000000000000000000000000size=  118016kB
 time=00:04:24.43 bitrate=3656.1kbits/s speed=1.53x
 frame=15922 fps= 92 q=-0.0 80000000000000000000000000000000size=  118016kB
 time=00:04:25.30 bitrate=3644.1kbits/s speed=1.53x
 frame=15974 fps= 92 q=-0.0 80000000000000000000000000000000size=  118784kB
 time=00:04:26.16 bitrate=3655.9kbits/s speed=1.53x
 frame=16024 fps= 92 q=-0.0 80000000000000000000000000000000size=  119040kB
 time=00:04:26.96 bitrate=3652.8kbits/s speed=1.53x
 frame=16074 fps= 92 q=-0.0 80000000000000000000000000000000size=  119552kB
 time=00:04:27.83 bitrate=3656.6kbits/s speed=1.53x
 frame=16122 fps= 92 q=-0.0 80000000000000000000000000000000size=  120064kB
 time=00:04:28.63 bitrate=3661.4kbits/s speed=1.53x
 frame=16173 fps= 92 q=-0.0 80000000000000000000000000000000size=  120832kB
 time=00:04:29.50 bitrate=3672.9kbits/s speed=1.53x
 frame=16222 fps= 92 q=-0.0 80000000000000000000000000000000size=  121600kB
 time=00:04:30.30 bitrate=3685.3kbits/s speed=1.53x
 frame=16270 fps= 92 q=-0.0 80000000000000000000000000000000size=  122112kB
 time=00:04:31.10 bitrate=3689.9kbits/s speed=1.53x
 frame=16320 fps= 92 q=-0.0 80000000000000000000000000000000size=  122368kB
 time=00:04:31.95 bitrate=3686.1kbits/s speed=1.53x
 frame=16365 fps= 92 q=-0.0 80000000000000000000000000000000size=  122880kB
 time=00:04:32.70 bitrate=3691.4kbits/s speed=1.53x
 frame=16410 fps= 92 q=-0.0 80000000000000000000000000000000size=  123392kB
 time=00:04:33.43 bitrate=3696.8kbits/s speed=1.53x
 frame=16459 fps= 92 q=-0.0 80000000000000000000000000000000size=  124160kB
 time=00:04:34.23 bitrate=3709.0kbits/s speed=1.53x
 frame=16506 fps= 92 q=-0.0 80000000000000000000000000000000size=  124928kB
 time=00:04:35.03 bitrate=3721.0kbits/s speed=1.53x
 frame=16554 fps= 92 q=-0.0 80000000000000000000000000000000size=  125440kB
 time=00:04:35.83 bitrate=3725.5kbits/s speed=1.53x
 frame=16603 fps= 92 q=-0.0 80000000000000000000000000000000size=  125952kB
 time=00:04:36.63 bitrate=3729.8kbits/s speed=1.53x
 frame=16651 fps= 92 q=-0.0 80000000000000000000000000000000size=  126464kB
 time=00:04:37.43 bitrate=3734.2kbits/s speed=1.53x
 frame=16698 fps= 92 q=-0.0 80000000000000000000000000000000size=  127232kB
 time=00:04:38.23 bitrate=3746.1kbits/s speed=1.53x
 frame=16747 fps= 92 q=-0.0 80000000000000000000000000000000size=  127744kB
 time=00:04:39.03 bitrate=3750.4kbits/s speed=1.53x
 frame=16795 fps= 92 q=-0.0 80000000000000000000000000000000size=  128512kB
 time=00:04:39.83 bitrate=3762.1kbits/s speed=1.53x
 frame=16844 fps= 92 q=-0.0 80000000000000000000000000000000size=  129024kB
 time=00:04:40.63 bitrate=3766.4kbits/s speed=1.53x
 frame=16893 fps= 92 q=-0.0 80000000000000000000000000000000size=  129792kB
 time=00:04:41.50 bitrate=3777.1kbits/s speed=1.53x
 frame=16942 fps= 92 q=-0.0 80000000000000000000000000000000size=  130816kB
 time=00:04:42.30 bitrate=3796.1kbits/s speed=1.53x
 frame=16990 fps= 92 q=-0.0 80000000000000000000000000000000size=  131328kB
 time=00:04:43.10 bitrate=3800.2kbits/s speed=1.53x
 frame=17038 fps= 92 q=-0.0 80000000000000000000000000000000size=  131840kB
 time=00:04:43.90 bitrate=3804.3kbits/s speed=1.53x
 frame=17086 fps= 92 q=-0.0 80000000000000000000000000000000size=  132608kB
 time=00:04:44.70 bitrate=3815.7kbits/s speed=1.53x
 frame=17135 fps= 92 q=-0.0 80000000000000000000000000000000size=  133120kB
 time=00:04:45.50 bitrate=3819.7kbits/s speed=1.53x
 frame=17182 fps= 92 q=-0.0 80000000000000000000000000000000size=  134144kB
 time=00:04:46.30 bitrate=3838.3kbits/s speed=1.53x
 frame=17231 fps= 92 q=-0.0 80000000000000000000000000000000size=  134656kB
 time=00:04:47.10 bitrate=3842.2kbits/s speed=1.53x
 frame=17281 fps= 92 q=-0.0 80000000000000000000000000000000size=  135424kB
 time=00:04:47.96 bitrate=3852.5kbits/s speed=1.53x
 frame=17331 fps= 92 q=-0.0 80000000000000000000000000000000size=  135680kB
 time=00:04:48.76 bitrate=3849.1kbits/s speed=1.53x
 frame=17382 fps= 92 q=-0.0 80000000000000000000000000000000size=  135680kB
 time=00:04:49.63 bitrate=3837.6kbits/s speed=1.53x
 frame=17434 fps= 92 q=-0.0 80000000000000000000000000000000size=  136192kB
 time=00:04:50.50 bitrate=3840.6kbits/s speed=1.53x
 frame=17485 fps= 92 q=-0.0 80000000000000000000000000000000size=  136192kB
 time=00:04:51.36 bitrate=3829.1kbits/s speed=1.53x
 frame=17534 fps= 92 q=-0.0 80000000000000000000000000000000size=  136704kB
 time=00:04:52.16 bitrate=3833.0kbits/s speed=1.53x
 frame=17584 fps= 92 q=-0.0 80000000000000000000000000000000size=  136704kB
 time=00:04:52.96 bitrate=3822.5kbits/s speed=1.53x
 frame=17634 fps= 92 q=-0.0 80000000000000000000000000000000size=  136960kB
 time=00:04:53.83 bitrate=3818.4kbits/s speed=1.53x
 frame=17685 fps= 92 q=-0.0 80000000000000000000000000000000size=  137472kB
 time=00:04:54.70 bitrate=3821.4kbits/s speed=1.54x
 frame=17734 fps= 92 q=-0.0 80000000000000000000000000000000size=  137728kB
 time=00:04:55.50 bitrate=3818.2kbits/s speed=1.54x
 frame=17784 fps= 92 q=-0.0 80000000000000000000000000000000size=  137984kB
 time=00:04:56.30 bitrate=3814.9kbits/s speed=1.54x
 frame=17833 fps= 92 q=-0.0 80000000000000000000000000000000size=  138496kB
 time=00:04:57.16 bitrate=3817.9kbits/s speed=1.54x
 frame=17881 fps= 92 q=-0.0 80000000000000000000000000000000size=  139008kB
 time=00:04:57.96 bitrate=3821.7kbits/s speed=1.54x
 frame=17930 fps= 92 q=-0.0 80000000000000000000000000000000size=  139520kB
 time=00:04:58.76 bitrate=3825.6kbits/s speed=1.54x
 frame=17980 fps= 92 q=-0.0 80000000000000000000000000000000size=  139776kB
 time=00:04:59.56 bitrate=3822.3kbits/s speed=1.54x
 frame=18030 fps= 92 q=-0.0 80000000000000000000000000000000size=  140032kB
 time=00:05:00.43 bitrate=3818.3kbits/s speed=1.54x
 frame=18081 fps= 92 q=-0.0 80000000000000000000000000000000size=  140032kB
 time=00:05:01.30 bitrate=3807.3kbits/s speed=1.54x
 frame=18130 fps= 92 q=-0.0 80000000000000000000000000000000size=  140288kB
 time=00:05:02.10 bitrate=3804.2kbits/s speed=1.54x
 frame=18180 fps= 92 q=-0.0 80000000000000000000000000000000size=  140544kB
 time=00:05:02.90 bitrate=3801.0kbits/s speed=1.54x
 frame=18226 fps= 92 q=-0.0 80000000000000000000000000000000size=  140544kB
 time=00:05:03.70 bitrate=3791.0kbits/s speed=1.54x
 frame=18276 fps= 92 q=-0.0 80000000000000000000000000000000size=  140800kB
 time=00:05:04.50 bitrate=3788.0kbits/s speed=1.54x
 frame=18326 fps= 92 q=-0.0 80000000000000000000000000000000size=  140800kB
 time=00:05:05.36 bitrate=3777.2kbits/s speed=1.54x
 frame=18378 fps= 92 q=-0.0 80000000000000000000000000000000size=  141056kB
 time=00:05:06.23 bitrate=3773.4kbits/s speed=1.54x
 frame=18430 fps= 92 q=-0.0 80000000000000000000000000000000size=  141056kB
 time=00:05:07.10 bitrate=3762.7kbits/s speed=1.54x
 frame=18481 fps= 92 q=-0.0 80000000000000000000000000000000size=  141568kB
 time=00:05:07.96 bitrate=3765.7kbits/s speed=1.54x
 frame=18530 fps= 92 q=-0.0 80000000000000000000000000000000size=  142080kB
 time=00:05:08.76 bitrate=3769.6kbits/s speed=1.54x
 frame=18578 fps= 92 q=-0.0 80000000000000000000000000000000size=  142592kB
 time=00:05:09.56 bitrate=3773.4kbits/s speed=1.54x
 frame=18626 fps= 92 q=-0.0 80000000000000000000000000000000size=  143104kB
 time=00:05:10.36 bitrate=3777.2kbits/s speed=1.54x
 frame=18674 fps= 92 q=-0.0 80000000000000000000000000000000size=  143360kB
 time=00:05:11.16 bitrate=3774.2kbits/s speed=1.54x
 frame=18721 fps= 92 q=-0.0 80000000000000000000000000000000size=  143616kB
 time=00:05:11.96 bitrate=3771.2kbits/s speed=1.54x
 frame=18770 fps= 92 q=-0.0 80000000000000000000000000000000size=  143872kB
 time=00:05:12.76 bitrate=3768.3kbits/s speed=1.54x
 frame=18818 fps= 92 q=-0.0 80000000000000000000000000000000size=  144128kB
 time=00:05:13.56 bitrate=3765.4kbits/s speed=1.54x
 frame=18866 fps= 92 q=-0.0 80000000000000000000000000000000size=  144640kB
 time=00:05:14.36 bitrate=3769.1kbits/s speed=1.54x
 frame=18914 fps= 92 q=-0.0 80000000000000000000000000000000size=  145152kB
 time=00:05:15.16 bitrate=3772.9kbits/s speed=1.54x
 frame=18961 fps= 92 q=-0.0 80000000000000000000000000000000size=  145664kB
 time=00:05:15.96 bitrate=3776.6kbits/s speed=1.54x
 [matroska,webm @ 0x559fec542340] Element at 0x12a19b6f ending at
 0x12a1a20e exceeds containing master element ending at 0x12a19b69
 frame=19009 fps= 92 q=-0.0 80000000000000000000000000000000size=  146176kB
 time=00:05:16.76 bitrate=3780.3kbits/s speed=1.54x
 frame=19017 fps= 92 q=-0.0 L80000000000000000000000000000000size=
 146642kB time=00:05:16.90 bitrate=3790.8kbits/s dup=2 drop=0 speed=1.54x
 video:146417kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.153868%
 bench: utime=78.313s stime=46.337s rtime=205.799s
 bench: maxrss=200096kB
 }}}

 Note that the bitrate is almost exactly cut by half (50%).

 On switching the driver to i965:

 {{{
 #!/bin/bash
 #LIBVA_DRIVER_NAME=i965 in this session.

 LIBVA_DRIVER_NAME=i965 FFREPORT="level=32:file=vaapi-i965.log" ffmpeg -y
 -stats -qphist -benchmark -vstats_file $(pwd)/vaapi-i965.csv \
 -vsync 1 -fflags +genpts \
 -init_hw_device vaapi=va:/dev/dri/renderD128 -filter_hw_device va -hwaccel
 vaapi \
 -i $(pwd)/rv.mkv -vf 'format=vaapi|nv12,hwupload'  \
 -c:v h264_vaapi -rc_mode:v VBR -qmin:v 1 -qmax:v 19 -coder:v cabac
 -profile:v main -b_depth:v 3 -refs:v 16 -b_strategy:v 1 -bf:v 3 -slices:v
 $(nproc) \
 -b:v 7.5M -minrate:v 7.5M -maxrate:v 15M -bufsize:v 7.5M  -r:v 60 -an -f
 mp4 -y $(pwd)/vaapi-i965.mp4
 }}}

 The situation somewhat improves, producing a watchable video with no
 noticeable visual degradation:

 {{{
 ffmpeg started on 2019-05-19 at 05:16:45
 Report written to "vaapi-i965.log"
 Command line:
 ffmpeg -y -stats -qphist -benchmark -vstats_file
 /home/brainiarc7/Desktop/src/benchmarks/final/vaapi-i965.csv -vsync 1
 -fflags +genpts -init_hw_device "vaapi=va:/dev/dri/renderD128"
 -filter_hw_device va -hwaccel vaapi -i
 /home/brainiarc7/Desktop/src/benchmarks/final/rv.mkv -vf
 "format=vaapi|nv12,hwupload" -c:v h264_vaapi -rc_mode:v VBR -qmin:v 1
 -qmax:v 19 -coder:v cabac -profile:v main -b_depth:v 3 -refs:v 16
 -b_strategy:v 1 -bf:v 3 -slices:v 12 -b:v 7.5M -minrate:v 7.5M -maxrate:v
 15M -bufsize:v 7.5M -r:v 60 -an -f mp4 -y
 /home/brainiarc7/Desktop/src/benchmarks/final/vaapi-i965.mp4
 ffmpeg version N-93885-gc61d16cf3b Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04)
   configuration: --pkg-config-flags=--static --prefix=/home/brainiarc7/bin
 --bindir=/home/brainiarc7/bin --extra-
 cflags=-I/home/brainiarc7/bin/include --extra-
 ldflags=-L/home/brainiarc7/bin/lib --enable-cuda-nvcc --enable-cuvid
 --enable-libnpp --extra-cflags=-I/usr/local/cuda/include/ --extra-
 ldflags=-L/usr/local/cuda/lib64/ --enable-nvenc --extra-
 cflags=-I/opt/intel/mediasdk/include --extra-
 ldflags=-L/opt/intel/mediasdk/lib --extra-
 ldflags=-L/opt/intel/mediasdk/plugins --enable-libmfx --enable-libass
 --enable-vaapi --disable-debug --enable-libvorbis --enable-libvpx
 --enable-libdrm --enable-opencl --enable-gpl --cpu=native --enable-opengl
 --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-openssl
 --extra-libs='-lpthread -lm -lz' --enable-nonfree
   libavutil      56. 28.100 / 56. 28.100
   libavcodec     58. 52.101 / 58. 52.101
   libavformat    58. 27.103 / 58. 27.103
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 53.101 /  7. 53.101
   libswscale      5.  4.101 /  5.  4.101
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Input #0, matroska,webm, from
 '/home/brainiarc7/Desktop/src/benchmarks/final/rv.mkv':
   Metadata:
     encoder         : libebml v1.3.7 + libmatroska v1.5.0
     creation_time   : 2019-05-09T10:09:00.000000Z
   Duration: 00:05:16.95, start: 0.000000, bitrate: 7889 kb/s
     Stream #0:0: Video: h264 (High), yuv420p(tv, bt470bg/bt709/bt709,
 progressive), 2560x1080 [SAR 1:1 DAR 64:27], 60 fps, 60 tbr, 1k tbn, 120
 tbc (default)
     Metadata:
       BPS-eng         : 7886082
       DURATION-eng    : 00:05:16.950000000
       NUMBER_OF_FRAMES-eng: 19015
       NUMBER_OF_BYTES-eng: 312436712
       _STATISTICS_WRITING_APP-eng: mkvmerge v33.1.0 ('Primrose') 64-bit
       _STATISTICS_WRITING_DATE_UTC-eng: 2019-05-09 10:09:00
       _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_vaapi))
 Press [q] to stop, [?] for help
 Output #0, mp4, to
 '/home/brainiarc7/Desktop/src/benchmarks/final/vaapi-i965.mp4':
   Metadata:
     encoder         : Lavf58.27.103
     Stream #0:0: Video: h264 (h264_vaapi) (Main) (avc1 / 0x31637661),
 vaapi_vld, 2560x1080 [SAR 1:1 DAR 64:27], q=1-19, 7500 kb/s, 60 fps, 15360
 tbn, 60 tbc (default)
     Metadata:
       BPS-eng         : 7886082
       DURATION-eng    : 00:05:16.950000000
       NUMBER_OF_FRAMES-eng: 19015
       NUMBER_OF_BYTES-eng: 312436712
       _STATISTICS_WRITING_APP-eng: mkvmerge v33.1.0 ('Primrose') 64-bit
       _STATISTICS_WRITING_DATE_UTC-eng: 2019-05-09 10:09:00
       _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
       encoder         : Lavc58.52.101 h264_vaapi
 frame=   46 fps=0.0 q=-0.0 10000000000000000000000000000000size=       0kB
 time=00:00:00.70 bitrate=   0.5kbits/s speed= 1.4x
 frame=   98 fps= 97 q=-0.0 10000000000000000000000000000000size=       0kB
 time=00:00:01.56 bitrate=   0.2kbits/s speed=1.55x
 frame=  150 fps= 98 q=-0.0 20000000000000000000000000000000size=     256kB
 time=00:00:02.43 bitrate= 862.0kbits/s speed=1.59x
 frame=  202 fps= 98 q=-0.0 20000000000000000000000000000000size=     512kB
 time=00:00:03.30 bitrate=1271.1kbits/s speed=1.61x
 frame=  254 fps= 99 q=-0.0 20000000000000000000000000000000size=     512kB
 time=00:00:04.16 bitrate=1006.7kbits/s speed=1.62x
 frame=  306 fps= 99 q=-0.0 20000000000000000000000000000000size=     768kB
 time=00:00:05.03 bitrate=1250.0kbits/s speed=1.63x
 frame=  358 fps=100 q=-0.0 30000000000000000000000000000000size=    1024kB
 time=00:00:05.90 bitrate=1421.8kbits/s speed=1.64x
 frame=  410 fps=100 q=-0.0 30000000000000000000000000000000size=    1280kB
 time=00:00:06.76 bitrate=1549.7kbits/s speed=1.65x
 frame=  462 fps=100 q=-0.0 30000000000000000000000000000000size=    2048kB
 time=00:00:07.63 bitrate=2197.9kbits/s speed=1.65x
 frame=  514 fps=100 q=-0.0 30000000000000000000000000000000size=    2816kB
 time=00:00:08.50 bitrate=2714.0kbits/s speed=1.65x
 frame=  567 fps=100 q=-0.0 30000000000000000000000000000000size=    3072kB
 time=00:00:09.36 bitrate=2686.8kbits/s speed=1.66x
 frame=  619 fps=101 q=-0.0 30000000000000000000000000000000size=    3328kB
 time=00:00:10.23 bitrate=2664.2kbits/s speed=1.67x
 frame=  670 fps=101 q=-0.0 30000000000000000000000000000000size=    3328kB
 time=00:00:11.10 bitrate=2456.1kbits/s speed=1.67x
 frame=  721 fps=101 q=-0.0 30000000000000000000000000000000size=    3584kB
 time=00:00:11.96 bitrate=2453.5kbits/s speed=1.67x
 frame=  774 fps=101 q=-0.0 40000000000000000000000000000000size=    3840kB
 time=00:00:12.83 bitrate=2451.2kbits/s speed=1.67x
 frame=  826 fps=101 q=-0.0 40000000000000000000000000000000size=    4096kB
 time=00:00:13.70 bitrate=2449.2kbits/s speed=1.67x
 frame=  878 fps=101 q=-0.0 40000000000000000000000000000000size=    4352kB
 time=00:00:14.56 bitrate=2447.5kbits/s speed=1.68x
 frame=  932 fps=101 q=-0.0 40000000000000000000000000000000size=    4352kB
 time=00:00:15.43 bitrate=2310.1kbits/s speed=1.68x
 frame=  986 fps=102 q=-0.0 40000000000000000000000000000000size=    4608kB
 time=00:00:16.36 bitrate=2306.5kbits/s speed=1.69x
 frame= 1039 fps=102 q=-0.0 40000000000000000000000000000000size=    4864kB
 time=00:00:17.23 bitrate=2312.2kbits/s speed=1.69x
 frame= 1092 fps=102 q=-0.0 40000000000000000000000000000000size=    5376kB
 time=00:00:18.10 bitrate=2433.2kbits/s speed=1.69x
 frame= 1144 fps=102 q=-0.0 40000000000000000000000000000000size=    5888kB
 time=00:00:18.96 bitrate=2543.1kbits/s speed=1.69x
 frame= 1194 fps=102 q=-0.0 40000000000000000000000000000000size=    6144kB
 time=00:00:19.83 bitrate=2537.7kbits/s speed=1.69x
 frame= 1246 fps=102 q=-0.0 40000000000000000000000000000000size=    6912kB
 time=00:00:20.70 bitrate=2735.4kbits/s speed=1.69x
 frame= 1298 fps=102 q=-0.0 40000000000000000000000000000000size=    7168kB
 time=00:00:21.56 bitrate=2722.7kbits/s speed=1.69x
 frame= 1350 fps=102 q=-0.0 40000000000000000000000000000000size=    7936kB
 time=00:00:22.43 bitrate=2898.0kbits/s speed=1.69x
 frame= 1402 fps=102 q=-0.0 40000000000000000000000000000000size=    8704kB
 time=00:00:23.30 bitrate=3060.2kbits/s speed=1.69x
 frame= 1454 fps=102 q=-0.0 40000000000000000000000000000000size=    9728kB
 time=00:00:24.16 bitrate=3297.6kbits/s speed=1.69x
 frame= 1506 fps=102 q=-0.0 40000000000000000000000000000000size=    9984kB
 time=00:00:25.03 bitrate=3267.2kbits/s speed=1.69x
 frame= 1558 fps=101 q=-0.0 40000000000000000000000000000000size=   10752kB
 time=00:00:25.90 bitrate=3400.8kbits/s speed=1.69x
 frame= 1611 fps=102 q=-0.0 50000000000000000000000000000000size=   11776kB
 time=00:00:26.76 bitrate=3604.1kbits/s speed=1.69x
 frame= 1663 fps=102 q=-0.0 50000000000000000000000000000000size=   12288kB
 time=00:00:27.63 bitrate=3642.8kbits/s speed=1.69x
 frame= 1714 fps=102 q=-0.0 50000000000000000000000000000000size=   13312kB
 time=00:00:28.50 bitrate=3826.4kbits/s speed=1.69x
 frame= 1767 fps=102 q=-0.0 50000000000000000000000000000000size=   13568kB
 time=00:00:29.36 bitrate=3784.9kbits/s speed=1.69x
 frame= 1822 fps=102 q=-0.0 50000000000000000000000000000000size=   14336kB
 time=00:00:30.30 bitrate=3875.9kbits/s speed=1.69x
 frame= 1878 fps=102 q=-0.0 50000000000000000000000000000000size=   14592kB
 time=00:00:31.23 bitrate=3827.3kbits/s speed= 1.7x
 frame= 1930 fps=102 q=-0.0 50000000000000000000000000000000size=   15360kB
 time=00:00:32.10 bitrate=3919.9kbits/s speed= 1.7x
 frame= 1982 fps=102 q=-0.0 50000000000000000000000000000000size=   15872kB
 time=00:00:32.96 bitrate=3944.1kbits/s speed= 1.7x
 frame= 2034 fps=102 q=-0.0 50000000000000000000000000000000size=   16128kB
 time=00:00:33.83 bitrate=3905.0kbits/s speed= 1.7x
 frame= 2086 fps=102 q=-0.0 50000000000000000000000000000000size=   16896kB
 time=00:00:34.70 bitrate=3988.8kbits/s speed= 1.7x
 frame= 2138 fps=102 q=-0.0 50000000000000000000000000000000size=   17152kB
 time=00:00:35.56 bitrate=3950.6kbits/s speed= 1.7x
 frame= 2190 fps=102 q=-0.0 50000000000000000000000000000000size=   17664kB
 time=00:00:36.43 bitrate=3971.7kbits/s speed= 1.7x
 frame= 2242 fps=102 q=-0.0 50000000000000000000000000000000size=   18432kB
 time=00:00:37.30 bitrate=4048.1kbits/s speed= 1.7x
 frame= 2294 fps=102 q=-0.0 50000000000000000000000000000000size=   19968kB
 time=00:00:38.16 bitrate=4285.9kbits/s speed= 1.7x
 frame= 2346 fps=102 q=-0.0 50000000000000000000000000000000size=   20992kB
 time=00:00:39.03 bitrate=4405.6kbits/s speed= 1.7x
 frame= 2398 fps=102 q=-0.0 50000000000000000000000000000000size=   21760kB
 time=00:00:39.90 bitrate=4467.6kbits/s speed= 1.7x
 frame= 2448 fps=102 q=-0.0 50000000000000000000000000000000size=   22784kB
 time=00:00:40.70 bitrate=4585.9kbits/s speed= 1.7x
 frame= 2499 fps=102 q=-0.0 50000000000000000000000000000000size=   23552kB
 time=00:00:41.56 bitrate=4641.7kbits/s speed= 1.7x
 frame= 2552 fps=102 q=-0.0 50000000000000000000000000000000size=   24576kB
 time=00:00:42.43 bitrate=4744.5kbits/s speed= 1.7x
 frame= 2606 fps=102 q=-0.0 50000000000000000000000000000000size=   24832kB
 time=00:00:43.36 bitrate=4690.8kbits/s speed= 1.7x
 frame= 2660 fps=102 q=-0.0 50000000000000000000000000000000size=   25344kB
 time=00:00:44.23 bitrate=4693.7kbits/s speed= 1.7x
 frame= 2708 fps=102 q=-0.0 50000000000000000000000000000000size=   26624kB
 time=00:00:45.03 bitrate=4843.2kbits/s speed= 1.7x
 frame= 2758 fps=102 q=-0.0 50000000000000000000000000000000size=   27904kB
 time=00:00:45.90 bitrate=4980.2kbits/s speed= 1.7x
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 time=00:00:46.76 bitrate=5022.4kbits/s speed= 1.7x
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 time=00:00:47.63 bitrate=4975.1kbits/s speed= 1.7x
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 time=00:00:48.50 bitrate=5015.9kbits/s speed= 1.7x
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 time=00:00:49.36 bitrate=5097.7kbits/s speed= 1.7x
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 time=00:00:50.23 bitrate=5176.8kbits/s speed= 1.7x
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 time=00:00:51.10 bitrate=5171.1kbits/s speed= 1.7x
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 time=00:00:52.03 bitrate=5239.5kbits/s speed= 1.7x
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 time=00:00:52.90 bitrate=5272.6kbits/s speed= 1.7x
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 time=00:00:53.83 bitrate=5298.1kbits/s speed= 1.7x
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 time=00:00:54.70 bitrate=5367.5kbits/s speed= 1.7x
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 time=00:00:55.63 bitrate=5390.5kbits/s speed= 1.7x
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 time=00:00:56.50 bitrate=5419.2kbits/s speed= 1.7x
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 time=00:00:57.36 bitrate=5447.0kbits/s speed= 1.7x
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 time=00:01:00.10 bitrate=5478.4kbits/s speed=1.71x
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 time=00:01:01.96 bitrate=5482.6kbits/s speed=1.71x
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 time=00:01:03.70 bitrate=5498.0kbits/s speed=1.71x
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 time=00:01:06.36 bitrate=5656.3kbits/s speed=1.71x
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 time=00:01:07.23 bitrate=5677.0kbits/s speed=1.71x
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 time=00:01:08.16 bitrate=5722.3kbits/s speed=1.71x
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 time=00:01:09.03 bitrate=5680.8kbits/s speed=1.71x
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 time=00:01:09.96 bitrate=5695.0kbits/s speed=1.71x
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 time=00:01:10.90 bitrate=5679.2kbits/s speed=1.71x
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 time=00:01:12.70 bitrate=5740.5kbits/s speed=1.72x
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 time=00:01:15.30 bitrate=5625.8kbits/s speed=1.72x
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 time=00:01:16.23 bitrate=5584.5kbits/s speed=1.72x
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 time=00:01:17.16 bitrate=5544.1kbits/s speed=1.72x
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 time=00:01:18.10 bitrate=5504.7kbits/s speed=1.72x
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 time=00:01:19.03 bitrate=5466.2kbits/s speed=1.72x
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 time=00:01:19.90 bitrate=5433.2kbits/s speed=1.72x
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 time=00:01:20.76 bitrate=5400.8kbits/s speed=1.72x
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 time=00:01:21.63 bitrate=5369.2kbits/s speed=1.72x
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 time=00:01:22.50 bitrate=5389.0kbits/s speed=1.72x
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 time=00:01:23.36 bitrate=5358.2kbits/s speed=1.72x
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 time=00:01:24.23 bitrate=5352.8kbits/s speed=1.72x
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 time=00:01:25.10 bitrate=5347.6kbits/s speed=1.72x
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 time=00:01:25.96 bitrate=5391.3kbits/s speed=1.72x
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 time=00:01:26.83 bitrate=5385.8kbits/s speed=1.72x
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 time=00:01:27.70 bitrate=5356.5kbits/s speed=1.72x
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 time=00:01:28.56 bitrate=5375.1kbits/s speed=1.72x
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 time=00:01:29.43 bitrate=5346.4kbits/s speed=1.72x
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 time=00:01:30.36 bitrate=5337.6kbits/s speed=1.72x
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 time=00:01:31.23 bitrate=5355.9kbits/s speed=1.72x
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 time=00:01:32.10 bitrate=5373.8kbits/s speed=1.72x
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 time=00:01:32.96 bitrate=5368.8kbits/s speed=1.72x
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 time=00:01:33.83 bitrate=5363.9kbits/s speed=1.72x
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 time=00:01:34.70 bitrate=5359.1kbits/s speed=1.72x
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 time=00:01:35.56 bitrate=5354.4kbits/s speed=1.72x
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 time=00:01:36.43 bitrate=5371.6kbits/s speed=1.72x
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 time=00:01:37.36 bitrate=5341.6kbits/s speed=1.72x
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 time=00:01:38.30 bitrate=5376.2kbits/s speed=1.72x
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 time=00:01:39.16 bitrate=5350.4kbits/s speed=1.72x
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 time=00:01:40.10 bitrate=5363.3kbits/s speed=1.72x
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 time=00:01:41.03 bitrate=5376.1kbits/s speed=1.72x
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 time=00:01:41.90 bitrate=5392.1kbits/s speed=1.72x
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 time=00:01:42.76 bitrate=5407.8kbits/s speed=1.72x
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 time=00:01:43.70 bitrate=5399.6kbits/s speed=1.72x
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 time=00:01:44.63 bitrate=5411.6kbits/s speed=1.72x
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 time=00:01:45.56 bitrate=5423.3kbits/s speed=1.72x
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 time=00:01:46.50 bitrate=5454.6kbits/s speed=1.73x
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 time=00:01:47.36 bitrate=5469.1kbits/s speed=1.73x
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 time=00:01:48.30 bitrate=5480.1kbits/s speed=1.73x
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 time=00:01:49.23 bitrate=5510.1kbits/s speed=1.73x
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 time=00:01:50.10 bitrate=5542.9kbits/s speed=1.73x
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 time=00:01:50.96 bitrate=5556.3kbits/s speed=1.73x
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 time=00:01:51.90 bitrate=5584.9kbits/s speed=1.73x
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 time=00:01:52.76 bitrate=5597.8kbits/s speed=1.73x
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 time=00:01:53.63 bitrate=5628.9kbits/s speed=1.73x
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 time=00:01:54.50 bitrate=5622.9kbits/s speed=1.73x
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 time=00:01:55.36 bitrate=5617.0kbits/s speed=1.73x
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 time=00:01:56.23 bitrate=5647.3kbits/s speed=1.73x
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 time=00:01:57.10 bitrate=5659.3kbits/s speed=1.73x
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 time=00:01:57.96 bitrate=5671.0kbits/s speed=1.73x
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 time=00:01:58.83 bitrate=5682.6kbits/s speed=1.73x
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 time=00:01:59.76 bitrate=5690.9kbits/s speed=1.73x
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 time=00:02:00.63 bitrate=5702.1kbits/s speed=1.73x
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 time=00:02:01.56 bitrate=5710.1kbits/s speed=1.73x
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 time=00:02:02.43 bitrate=5738.2kbits/s speed=1.73x
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 time=00:02:03.30 bitrate=5731.9kbits/s speed=1.73x
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 time=00:02:04.16 bitrate=5742.5kbits/s speed=1.73x
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 time=00:02:05.10 bitrate=5733.2kbits/s speed=1.73x
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 time=00:02:06.03 bitrate=5740.7kbits/s speed=1.73x
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 time=00:02:06.96 bitrate=5731.5kbits/s speed=1.73x
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 time=00:02:07.90 bitrate=5722.5kbits/s speed=1.73x
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 time=00:02:08.83 bitrate=5729.9kbits/s speed=1.73x
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 time=00:02:09.76 bitrate=5704.8kbits/s speed=1.73x
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 time=00:02:10.70 bitrate=5712.2kbits/s speed=1.73x
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 time=00:02:11.63 bitrate=5719.5kbits/s speed=1.73x
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 time=00:02:12.56 bitrate=5726.7kbits/s speed=1.73x
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 time=00:02:13.43 bitrate=5736.7kbits/s speed=1.73x
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 time=00:02:14.36 bitrate=5728.0kbits/s speed=1.73x
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 time=00:02:15.30 bitrate=5688.5kbits/s speed=1.73x
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 time=00:02:16.16 bitrate=5698.5kbits/s speed=1.73x
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 time=00:02:17.03 bitrate=5677.8kbits/s speed=1.73x
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 time=00:02:17.96 bitrate=5669.8kbits/s speed=1.73x
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 time=00:02:18.83 bitrate=5679.7kbits/s speed=1.73x
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 time=00:02:19.76 bitrate=5686.8kbits/s speed=1.73x
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 time=00:02:20.70 bitrate=5678.9kbits/s speed=1.73x
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 time=00:02:21.63 bitrate=5685.9kbits/s speed=1.74x
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 time=00:02:22.50 bitrate=5695.4kbits/s speed=1.74x
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 time=00:02:23.36 bitrate=5690.2kbits/s speed=1.74x
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 time=00:02:24.30 bitrate=5711.6kbits/s speed=1.74x
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 time=00:02:25.16 bitrate=5706.4kbits/s speed=1.74x
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 time=00:02:26.10 bitrate=5698.6kbits/s speed=1.74x
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 time=00:02:26.96 bitrate=5707.8kbits/s speed=1.74x
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 time=00:02:27.90 bitrate=5700.2kbits/s speed=1.74x
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 time=00:02:28.76 bitrate=5723.4kbits/s speed=1.74x
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 time=00:02:29.70 bitrate=5715.7kbits/s speed=1.74x
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 time=00:02:30.56 bitrate=5724.6kbits/s speed=1.74x
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 time=00:02:31.50 bitrate=5703.1kbits/s speed=1.74x
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 time=00:02:32.36 bitrate=5712.0kbits/s speed=1.74x
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 time=00:02:33.23 bitrate=5707.1kbits/s speed=1.74x
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 time=00:02:34.16 bitrate=5713.3kbits/s speed=1.74x
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 time=00:02:35.10 bitrate=5706.0kbits/s speed=1.74x
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 time=00:02:35.90 bitrate=5717.1kbits/s speed=1.74x
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 time=00:02:36.83 bitrate=5709.8kbits/s speed=1.74x
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 time=00:02:37.63 bitrate=5694.1kbits/s speed=1.74x
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 time=00:02:38.50 bitrate=5702.7kbits/s speed=1.74x
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 time=00:02:39.36 bitrate=5684.8kbits/s speed=1.74x
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 time=00:02:40.23 bitrate=5719.5kbits/s speed=1.74x
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 time=00:02:41.10 bitrate=5727.8kbits/s speed=1.74x
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 time=00:02:42.03 bitrate=5733.6kbits/s speed=1.74x
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 time=00:02:42.90 bitrate=5741.7kbits/s speed=1.74x
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 time=00:02:43.76 bitrate=5724.2kbits/s speed=1.74x
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 time=00:02:44.63 bitrate=5719.5kbits/s speed=1.74x
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 time=00:02:45.50 bitrate=5702.2kbits/s speed=1.74x
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 time=00:02:46.36 bitrate=5685.1kbits/s speed=1.74x
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 time=00:02:47.23 bitrate=5655.7kbits/s speed=1.74x
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 time=00:02:48.16 bitrate=5636.7kbits/s speed=1.74x
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 time=00:02:49.10 bitrate=5618.0kbits/s speed=1.74x
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 time=00:02:50.03 bitrate=5599.5kbits/s speed=1.74x
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 time=00:02:50.90 bitrate=5571.1kbits/s speed=1.74x
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 time=00:02:51.83 bitrate=5565.3kbits/s speed=1.74x
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 time=00:02:52.76 bitrate=5547.4kbits/s speed=1.74x
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 time=00:02:53.70 bitrate=5529.6kbits/s speed=1.74x
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 time=00:02:54.63 bitrate=5524.1kbits/s speed=1.74x
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 time=00:02:55.56 bitrate=5518.6kbits/s speed=1.74x
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 time=00:02:56.50 bitrate=5513.2kbits/s speed=1.74x
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 time=00:02:57.36 bitrate=5498.1kbits/s speed=1.74x
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 time=00:02:58.30 bitrate=5492.8kbits/s speed=1.74x
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 time=00:02:59.23 bitrate=5475.9kbits/s speed=1.74x
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 time=00:03:00.16 bitrate=5470.8kbits/s speed=1.74x
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 time=00:03:01.10 bitrate=5465.8kbits/s speed=1.74x
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 time=00:03:01.96 bitrate=5462.8kbits/s speed=1.74x
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 time=00:03:55.95 bitrate=4852.9kbits/s speed=1.75x
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 time=00:04:10.03 bitrate=4713.8kbits/s speed=1.75x
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 time=00:04:15.43 bitrate=4647.0kbits/s speed=1.75x
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 time=00:04:18.10 bitrate=4631.4kbits/s speed=1.75x
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 time=00:04:18.96 bitrate=4624.0kbits/s speed=1.75x
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 time=00:04:24.30 bitrate=4586.3kbits/s speed=1.75x
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 time=00:04:25.16 bitrate=4571.3kbits/s speed=1.75x
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 time=00:04:26.03 bitrate=4580.0kbits/s speed=1.75x
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 time=00:04:26.96 bitrate=4571.9kbits/s speed=1.75x
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 time=00:04:27.83 bitrate=4572.8kbits/s speed=1.75x
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 time=00:04:28.76 bitrate=4580.3kbits/s speed=1.75x
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 time=00:04:29.63 bitrate=4596.7kbits/s speed=1.75x
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 time=00:04:30.56 bitrate=4611.8kbits/s speed=1.75x
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 time=00:04:31.50 bitrate=4611.4kbits/s speed=1.75x
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 time=00:04:33.23 bitrate=4628.2kbits/s speed=1.75x
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 time=00:04:34.16 bitrate=4635.4kbits/s speed=1.75x
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 time=00:04:35.96 bitrate=4643.2kbits/s speed=1.75x
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 time=00:04:36.83 bitrate=4643.8kbits/s speed=1.75x
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 time=00:04:38.56 bitrate=4652.5kbits/s speed=1.75x
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 time=00:04:40.30 bitrate=4676.1kbits/s speed=1.75x
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 time=00:04:42.16 bitrate=4697.2kbits/s speed=1.75x
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 time=00:04:43.10 bitrate=4704.0kbits/s speed=1.75x
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 time=00:04:43.96 bitrate=4711.8kbits/s speed=1.75x
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 time=00:04:44.83 bitrate=4719.5kbits/s speed=1.75x
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 time=00:04:45.70 bitrate=4734.6kbits/s speed=1.75x
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 time=00:04:46.56 bitrate=4749.5kbits/s speed=1.75x
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 time=00:04:47.43 bitrate=4757.1kbits/s speed=1.75x
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 time=00:04:48.36 bitrate=4756.2kbits/s speed=1.75x
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 time=00:04:49.30 bitrate=4755.4kbits/s speed=1.75x
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 time=00:04:50.23 bitrate=4754.5kbits/s speed=1.75x
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 time=00:04:52.10 bitrate=4745.7kbits/s speed=1.75x
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 time=00:04:53.03 bitrate=4737.7kbits/s speed=1.75x
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 time=00:04:53.96 bitrate=4729.8kbits/s speed=1.75x
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 time=00:04:54.83 bitrate=4730.2kbits/s speed=1.75x
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 time=00:04:57.63 bitrate=4720.9kbits/s speed=1.75x
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 time=00:05:00.30 bitrate=4720.9kbits/s speed=1.75x
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 time=00:05:01.23 bitrate=4706.2kbits/s speed=1.75x
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 time=00:05:02.10 bitrate=4706.6kbits/s speed=1.75x
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 time=00:05:03.96 bitrate=4698.4kbits/s speed=1.75x
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 time=00:05:05.76 bitrate=4677.6kbits/s speed=1.75x
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 time=00:05:06.70 bitrate=4670.2kbits/s speed=1.75x
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 time=00:05:14.83 bitrate=4682.8kbits/s speed=1.75x
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 time=00:05:15.70 bitrate=4683.2kbits/s speed=1.75x
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 [matroska,webm @ 0x5646375e9940] Element at 0x12a19b6f ending at
 0x12a1a20e exceeds containing master element ending at 0x12a19b69
 frame=19017 fps=105 q=-0.0 L80000000000000000000000000000000size=
 181838kB time=00:05:16.90 bitrate=4700.6kbits/s dup=2 drop=0 speed=1.75x
 video:181612kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.124367%
 bench: utime=76.308s stime=12.067s rtime=180.963s
 bench: maxrss=138984kB
 }}}

 In this case, with the i965 driver, the bitrate shoots up a bit but is
 still quite far from the rated target of 7.5M, something that QSV can
 achieve.

 '''Extras:'''

 Platform information:

 1. LIBVA_DRIVER_NAME=i965 vainfo

 {{{
 LIBVA_DRIVER_NAME=i965 vainfo
 libva info: VA-API version 1.5.0
 libva info: va_getDriverName() returns 0
 libva info: User requested driver 'i965'
 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
 libva info: Found init function __vaDriverInit_1_5
 libva info: va_openDriver() returns 0
 vainfo: VA-API version: 1.5 (libva 2.5.0.pre1)
 vainfo: Driver version: Intel i965 driver for Intel(R) Coffee Lake -
 2.4.0.pre1 (2.3.0-16-gdc3473d)
 vainfo: Supported profile and entrypoints
       VAProfileMPEG2Simple            : VAEntrypointVLD
       VAProfileMPEG2Simple            : VAEntrypointEncSlice
       VAProfileMPEG2Main              : VAEntrypointVLD
       VAProfileMPEG2Main              : VAEntrypointEncSlice
       VAProfileH264ConstrainedBaseline: VAEntrypointVLD
       VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
       VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
       VAProfileH264Main               : VAEntrypointVLD
       VAProfileH264Main               : VAEntrypointEncSlice
       VAProfileH264Main               : VAEntrypointEncSliceLP
       VAProfileH264High               : VAEntrypointVLD
       VAProfileH264High               : VAEntrypointEncSlice
       VAProfileH264High               : VAEntrypointEncSliceLP
       VAProfileH264MultiviewHigh      : VAEntrypointVLD
       VAProfileH264MultiviewHigh      : VAEntrypointEncSlice
       VAProfileH264StereoHigh         : VAEntrypointVLD
       VAProfileH264StereoHigh         : VAEntrypointEncSlice
       VAProfileVC1Simple              : VAEntrypointVLD
       VAProfileVC1Main                : VAEntrypointVLD
       VAProfileVC1Advanced            : VAEntrypointVLD
       VAProfileNone                   : VAEntrypointVideoProc
       VAProfileJPEGBaseline           : VAEntrypointVLD
       VAProfileJPEGBaseline           : VAEntrypointEncPicture
       VAProfileVP8Version0_3          : VAEntrypointVLD
       VAProfileVP8Version0_3          : VAEntrypointEncSlice
       VAProfileHEVCMain               : VAEntrypointVLD
       VAProfileHEVCMain               : VAEntrypointEncSlice
       VAProfileHEVCMain10             : VAEntrypointVLD
       VAProfileHEVCMain10             : VAEntrypointEncSlice
       VAProfileVP9Profile0            : VAEntrypointVLD
       VAProfileVP9Profile0            : VAEntrypointEncSlice
       VAProfileVP9Profile2            : VAEntrypointVLD
 }}}

 2. LIBVA_DRIVER_NAME=iHD vainfo

 {{{
 LIBVA_DRIVER_NAME=iHD vainfo
 libva info: VA-API version 1.5.0
 libva info: va_getDriverName() returns 0
 libva info: User requested driver 'iHD'
 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
 libva info: Found init function __vaDriverInit_1_5
 libva info: va_openDriver() returns 0
 vainfo: VA-API version: 1.5 (libva 2.5.0.pre1)
 vainfo: Driver version: Intel iHD driver - 2.0.0
 vainfo: Supported profile and entrypoints
       VAProfileNone                   : VAEntrypointVideoProc
       VAProfileNone                   : VAEntrypointStats
       VAProfileMPEG2Simple            : VAEntrypointVLD
       VAProfileMPEG2Simple            : VAEntrypointEncSlice
       VAProfileMPEG2Main              : VAEntrypointVLD
       VAProfileMPEG2Main              : VAEntrypointEncSlice
       VAProfileH264Main               : VAEntrypointVLD
       VAProfileH264Main               : VAEntrypointEncSlice
       VAProfileH264Main               : VAEntrypointFEI
       VAProfileH264Main               : VAEntrypointEncSliceLP
       VAProfileH264High               : VAEntrypointVLD
       VAProfileH264High               : VAEntrypointEncSlice
       VAProfileH264High               : VAEntrypointFEI
       VAProfileH264High               : VAEntrypointEncSliceLP
       VAProfileVC1Simple              : VAEntrypointVLD
       VAProfileVC1Main                : VAEntrypointVLD
       VAProfileVC1Advanced            : VAEntrypointVLD
       VAProfileJPEGBaseline           : VAEntrypointVLD
       VAProfileJPEGBaseline           : VAEntrypointEncPicture
       VAProfileH264ConstrainedBaseline: VAEntrypointVLD
       VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
       VAProfileH264ConstrainedBaseline: VAEntrypointFEI
       VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
       VAProfileVP8Version0_3          : VAEntrypointVLD
       VAProfileVP8Version0_3          : VAEntrypointEncSlice
       VAProfileHEVCMain               : VAEntrypointVLD
       VAProfileHEVCMain               : VAEntrypointEncSlice
       VAProfileHEVCMain               : VAEntrypointFEI
       VAProfileHEVCMain10             : VAEntrypointVLD
       VAProfileHEVCMain10             : VAEntrypointEncSlice
       VAProfileVP9Profile0            : VAEntrypointVLD
       VAProfileVP9Profile2            : VAEntrypointVLD
 }}}

 The attributes of the file I'm working on:

 {{{
 ffprobe -i rv.mkv
 ffprobe version N-93885-gc61d16cf3b Copyright (c) 2007-2019 the FFmpeg
 developers
   built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04)
   configuration: --pkg-config-flags=--static --prefix=/home/brainiarc7/bin
 --bindir=/home/brainiarc7/bin --extra-
 cflags=-I/home/brainiarc7/bin/include --extra-
 ldflags=-L/home/brainiarc7/bin/lib --enable-cuda-nvcc --enable-cuvid
 --enable-libnpp --extra-cflags=-I/usr/local/cuda/include/ --extra-
 ldflags=-L/usr/local/cuda/lib64/ --enable-nvenc --extra-
 cflags=-I/opt/intel/mediasdk/include --extra-
 ldflags=-L/opt/intel/mediasdk/lib --extra-
 ldflags=-L/opt/intel/mediasdk/plugins --enable-libmfx --enable-libass
 --enable-vaapi --disable-debug --enable-libvorbis --enable-libvpx
 --enable-libdrm --enable-opencl --enable-gpl --cpu=native --enable-opengl
 --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-openssl
 --extra-libs='-lpthread -lm -lz' --enable-nonfree
   libavutil      56. 28.100 / 56. 28.100
   libavcodec     58. 52.101 / 58. 52.101
   libavformat    58. 27.103 / 58. 27.103
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 53.101 /  7. 53.101
   libswscale      5.  4.101 /  5.  4.101
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Input #0, matroska,webm, from 'rv.mkv':
   Metadata:
     encoder         : libebml v1.3.7 + libmatroska v1.5.0
     creation_time   : 2019-05-09T10:09:00.000000Z
   Duration: 00:05:16.95, start: 0.000000, bitrate: 7889 kb/s
     Stream #0:0: Video: h264 (High), yuv420p(tv, bt470bg/bt709/bt709,
 progressive), 2560x1080 [SAR 1:1 DAR 64:27], 60 fps, 60 tbr, 1k tbn, 120
 tbc (default)
     Metadata:
       BPS-eng         : 7886082
       DURATION-eng    : 00:05:16.950000000
       NUMBER_OF_FRAMES-eng: 19015
       NUMBER_OF_BYTES-eng: 312436712
       _STATISTICS_WRITING_APP-eng: mkvmerge v33.1.0 ('Primrose') 64-bit
       _STATISTICS_WRITING_DATE_UTC-eng: 2019-05-09 10:09:00
       _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7910>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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