[FFmpeg-trac] #6370(undetermined:new): Change in rotate metadata treatment between ffmpeg 3.2 and ffmpeg 3.3

FFmpeg trac at avcodec.org
Thu May 4 22:06:44 EEST 2017


#6370: Change in rotate metadata treatment between ffmpeg 3.2 and ffmpeg 3.3
-------------------------------------+-------------------------------------
             Reporter:  tamc         |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by tamc):

 Sorry my original ticket wasn't clear.

 Tested against current git head.

 Steps to reproduce:

 1. Download the attached original.mp4 (or any other h264 file with a
 "rotate : 90" in its metadata
 2. `ffmpeg -noautorotate -i original.mp4 -metadata:s:v rotate=0 -vf
 scale=640:480,transpose=clock  -f mp4 -y rotated.mp4`
 3. `ffprobe  -i rotated.mp4`
 4. Note the (for me, unexpected) presence of `Metadata:  rotate : 90` in
 the output.

 That metadata was not there in previous versions of ffmpeg.

 Full output:

 {{{
 ffmpeg -noautorotate -i original.mp4 -metadata:s:v rotate=0 -vf
 scale=640:480,transpose=clock  -f mp4 -y rotated.mp4

 ffmpeg version git-2017-05-04-d2657d2 Copyright (c) 2000-2017 the FFmpeg
 developers
   built with Apple LLVM version 8.1.0 (clang-802.0.42)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-d2657d2 --enable-
 shared --enable-pthreads --enable-gpl --enable-version3 --enable-
 hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-
 ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-
 opencl --disable-lzma --enable-vda
   libavutil      55. 61.100 / 55. 61.100
   libavcodec     57. 93.100 / 57. 93.100
   libavformat    57. 72.101 / 57. 72.101
   libavdevice    57.  7.100 / 57.  7.100
   libavfilter     6. 88.100 /  6. 88.100
   libavresample   3.  6.  0 /  3.  6.  0
   libswscale      4.  7.101 /  4.  7.101
   libswresample   2.  8.100 /  2.  8.100
   libpostproc    54.  6.100 / 54.  6.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'original.mp4':
   Metadata:
     major_brand     : mp42
     minor_version   : 1
     compatible_brands: mp41mp42isom
     creation_time   : 2017-05-04T15:44:25.000000Z
   Duration: 00:00:02.05, start: 0.000000, bitrate: 3126 kb/s
     Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 /
 0x31637661), yuv420p, 640x480, 2962 kb/s, 14.91 fps, 14.92 tbr, 90k tbn,
 180k tbc (default)
     Metadata:
       rotate          : 90
       creation_time   : 2017-05-04T15:44:25.000000Z
       handler_name    : Core Media Video
     Side data:
       displaymatrix: rotation of -90.00 degrees
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
 stereo, fltp, 111 kb/s (default)
     Metadata:
       creation_time   : 2017-05-04T15:44:25.000000Z
       handler_name    : Core Media Audio
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
   Stream #0:1 -> #0:1 (aac (native) -> aac (native))
 Press [q] to stop, [?] for help
 [libx264 @ 0x7fe46000ea00] using cpu capabilities: MMX2 SSE2Fast SSSE3
 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
 [libx264 @ 0x7fe46000ea00] profile High, level 2.2
 [libx264 @ 0x7fe46000ea00] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC
 codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options:
 cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6
 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=14
 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
 Output #0, mp4, to 'rotated.mp4':
   Metadata:
     major_brand     : mp42
     minor_version   : 1
     compatible_brands: mp41mp42isom
     encoder         : Lavf57.72.101
     Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021),
 yuv420p, 480x640, q=-1--1, 14.92 fps, 11456 tbn, 14.92 tbc (default)
     Metadata:
       encoder         : Lavc57.93.100 libx264
       creation_time   : 2017-05-04T15:44:25.000000Z
       handler_name    : Core Media Video
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
       displaymatrix: rotation of -90.00 degrees
     Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz,
 stereo, fltp, 128 kb/s (default)
     Metadata:
       creation_time   : 2017-05-04T15:44:25.000000Z
       handler_name    : Core Media Audio
       encoder         : Lavc57.93.100 aac
 frame=   31 fps=0.0 q=-1.0 Lsize=     306kB time=00:00:02.05
 bitrate=1216.8kbits/s speed=3.18x
 video:279kB audio:24kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.774942%
 [libx264 @ 0x7fe46000ea00] frame I:1     Avg QP:23.06  size: 16177
 [libx264 @ 0x7fe46000ea00] frame P:10    Avg QP:24.86  size: 12260
 [libx264 @ 0x7fe46000ea00] frame B:20    Avg QP:26.12  size:  7304
 [libx264 @ 0x7fe46000ea00] consecutive B-frames:  6.5% 12.9% 29.0% 51.6%
 [libx264 @ 0x7fe46000ea00] mb I  I16..4:  9.2% 63.4% 27.4%
 [libx264 @ 0x7fe46000ea00] mb P  I16..4:  5.8% 30.1%  8.8%  P16..4: 32.4%
 15.7%  4.9%  0.0%  0.0%    skip: 2.3%
 [libx264 @ 0x7fe46000ea00] mb B  I16..4:  1.1%  4.6%  1.5%  B16..8: 40.0%
 17.1%  4.6%  direct:13.2%  skip:17.9%  L0:58.6% L1:26.7% BI:14.8%
 [libx264 @ 0x7fe46000ea00] 8x8 transform intra:66.1% inter:69.7%
 [libx264 @ 0x7fe46000ea00] coded y,uvDC,uvAC intra: 75.3% 74.5% 22.0%
 inter: 41.5% 44.1% 0.4%
 [libx264 @ 0x7fe46000ea00] i16 v,h,dc,p: 11% 49%  9% 30%
 [libx264 @ 0x7fe46000ea00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  9% 45% 11%  4%
 5%  4% 10%  4%  8%
 [libx264 @ 0x7fe46000ea00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 48%  9%  4%
 5%  4% 11%  3%  5%
 [libx264 @ 0x7fe46000ea00] i8c dc,h,v,p: 38% 39% 16%  8%
 [libx264 @ 0x7fe46000ea00] Weighted P-Frames: Y:20.0% UV:10.0%
 [libx264 @ 0x7fe46000ea00] ref P L0: 63.7% 12.7% 19.2%  4.3%  0.2%
 [libx264 @ 0x7fe46000ea00] ref B L0: 89.0%  8.8%  2.2%
 [libx264 @ 0x7fe46000ea00] ref B L1: 98.8%  1.2%
 [libx264 @ 0x7fe46000ea00] kb/s:1096.54
 [aac @ 0x7fe460010200] Qavg: 14239.845

 ffprobe  -i rotated.mp4

 ffprobe version git-2017-05-04-d2657d2 Copyright (c) 2007-2017 the FFmpeg
 developers
   built with Apple LLVM version 8.1.0 (clang-802.0.42)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-d2657d2 --enable-
 shared --enable-pthreads --enable-gpl --enable-version3 --enable-
 hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-
 ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-
 opencl --disable-lzma --enable-vda
   libavutil      55. 61.100 / 55. 61.100
   libavcodec     57. 93.100 / 57. 93.100
   libavformat    57. 72.101 / 57. 72.101
   libavdevice    57.  7.100 / 57.  7.100
   libavfilter     6. 88.100 /  6. 88.100
   libavresample   3.  6.  0 /  3.  6.  0
   libswscale      4.  7.101 /  4.  7.101
   libswresample   2.  8.100 /  2.  8.100
   libpostproc    54.  6.100 / 54.  6.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'rotated.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf57.72.101
   Duration: 00:00:02.08, start: 0.000000, bitrate: 1203 kb/s
     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
 480x640, 1099 kb/s, 14.92 fps, 14.92 tbr, 11456 tbn, 29.83 tbc (default)
     Metadata:
       rotate          : 90 <--- UNEXPECTED, BUG?
       handler_name    : VideoHandler
     Side data:
       displaymatrix: rotation of -90.00 degrees
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
 stereo, fltp, 95 kb/s (default)
     Metadata:
       handler_name    : SoundHandler

 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6370#comment:3>
FFmpeg <https://ffmpeg.org>
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