[FFmpeg-trac] #5123(avfilter:closed): PAD filter works correctly only when vcodec is NOT H264

FFmpeg trac at avcodec.org
Wed Jan 6 15:37:00 CET 2016


#5123: PAD filter works correctly only when vcodec is NOT H264
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  SarasotaSlim                       |                   Status:  closed
                 Type:  defect       |                Component:  avfilter
             Priority:  normal       |               Resolution:
              Version:  unspecified  |  needs_more_info
             Keywords:  pad          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by ubitux):

 According to the original post, the input needs to be {{{720x480}}} in
 {{{MPEG2}}} and {{{H.264}}}. So I did the following:

 {{{
 ☭ ./ffmpeg -f lavfi -i testsrc2=s=720x480:d=60 -c:v libx264 test-h264.mkv
 -c:v mpeg2video test-mpeg2.mkv
 ffmpeg version N-77715-gfc703f5 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.3.0 (GCC)
   configuration: --enable-gpl --enable-debug --disable-stripping --enable-
 fontconfig --enable-libass --enable-libfreetype --enable-libfribidi
 --enable-libmodplug --enable-libmp3lame --enable-libopus --enable-libpulse
 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp
 --enable-libx264 --samples=/home/ux/fate-samples --assert-level=2
   libavutil      55. 12.100 / 55. 12.100
   libavcodec     57. 21.100 / 57. 21.100
   libavformat    57. 21.101 / 57. 21.101
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 23.100 /  6. 23.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, lavfi, from 'testsrc2=s=720x480:d=60':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480
 [SAR 1:1 DAR 3:2], 25 tbr, 25 tbn, 25 tbc
 [libx264 @ 0x55840d734b40] using SAR=1/1
 [libx264 @ 0x55840d734b40] using cpu capabilities: MMX2 SSE2Fast SSSE3
 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
 [libx264 @ 0x55840d734b40] profile High, level 3.0
 [libx264 @ 0x55840d734b40] 264 - core 148 r2579 73ae2d1 - H.264/MPEG-4 AVC
 codec - Copyleft 2003-2015 - 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=25
 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, matroska, to 'test-h264.mkv':
   Metadata:
     encoder         : Lavf57.21.101
     Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p,
 720x480 [SAR 1:1 DAR 3:2], q=-1--1, 25 fps, 1k tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.21.100 libx264
     Side data:
       unknown side data type 10 (24 bytes)
 Output #1, matroska, to 'test-mpeg2.mkv':
   Metadata:
     encoder         : Lavf57.21.101
     Stream #1:0: Video: mpeg2video (Main) (mpg2 / 0x3267706D), yuv420p,
 720x480 [SAR 1:1 DAR 3:2], q=2-31, 200 kb/s, 25 fps, 1k tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.21.100 mpeg2video
     Side data:
       unknown side data type 10 (24 bytes)
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
   Stream #0:0 -> #1:0 (rawvideo (native) -> mpeg2video (native))
 Press [q] to stop, [?] for help
 frame= 1500 fps=155 q=-1.0 Lq=31.0 size=    7370kB time=00:00:59.96
 bitrate=1006.9kbits/s speed=6.18x
 video:10696kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 [libx264 @ 0x55840d734b40] frame I:6     Avg QP:14.38  size: 13694
 [libx264 @ 0x55840d734b40] frame P:1027  Avg QP:25.73  size:  5352
 [libx264 @ 0x55840d734b40] frame B:467   Avg QP:30.26  size:  4188
 [libx264 @ 0x55840d734b40] consecutive B-frames: 43.7% 40.5% 11.2%  4.5%
 [libx264 @ 0x55840d734b40] mb I  I16..4: 55.1% 29.7% 15.2%
 [libx264 @ 0x55840d734b40] mb P  I16..4:  1.5%  2.8%  0.4%  P16..4:  8.8%
 4.8%  3.2%  0.0%  0.0%    skip:78.5%
 [libx264 @ 0x55840d734b40] mb B  I16..4:  0.3%  0.3%  0.2%  B16..8: 15.2%
 3.4%  1.0%  direct: 1.9%  skip:77.7%  L0:48.7% L1:44.5% BI: 6.9%
 [libx264 @ 0x55840d734b40] 8x8 transform intra:55.7% inter:18.5%
 [libx264 @ 0x55840d734b40] coded y,uvDC,uvAC intra: 8.2% 14.4% 13.1%
 inter: 4.9% 8.9% 7.6%
 [libx264 @ 0x55840d734b40] i16 v,h,dc,p: 81% 16%  2%  0%
 [libx264 @ 0x55840d734b40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  5%  9% 85%  0%
 0%  0%  0%  0%  0%
 [libx264 @ 0x55840d734b40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 21% 31%  3%
 3%  4%  4%  4%  4%
 [libx264 @ 0x55840d734b40] i8c dc,h,v,p: 63% 12% 24%  1%
 [libx264 @ 0x55840d734b40] Weighted P-Frames: Y:0.0% UV:0.0%
 [libx264 @ 0x55840d734b40] ref P L0: 54.5%  6.9% 23.5% 15.1%
 [libx264 @ 0x55840d734b40] ref B L0: 72.4% 25.3%  2.3%
 [libx264 @ 0x55840d734b40] ref B L1: 95.5%  4.5%
 [libx264 @ 0x55840d734b40] kb/s:1004.62
 }}}

 To obtain
 {{{
 -rw-r--r-- 1 ux ux 7.2M Jan  6 15:30 test-h264.mkv
 -rw-r--r-- 1 ux ux 3.3M Jan  6 15:30 test-mpeg2.mkv
 }}}

 Then tried to pad both:
 {{{
 ☭ ./ffmpeg -i test-mpeg2.mkv -vf pad=720:540:0:30:black test-mpeg2-pad.mkv
 ffmpeg version N-77715-gfc703f5 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.3.0 (GCC)
   configuration: --enable-gpl --enable-debug --disable-stripping --enable-
 fontconfig --enable-libass --enable-libfreetype --enable-libfribidi
 --enable-libmodplug --enable-libmp3lame --enable-libopus --enable-libpulse
 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp
 --enable-libx264 --samples=/home/ux/fate-samples --assert-level=2
   libavutil      55. 12.100 / 55. 12.100
   libavcodec     57. 21.100 / 57. 21.100
   libavformat    57. 21.101 / 57. 21.101
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 23.100 /  6. 23.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, matroska,webm, from 'test-mpeg2.mkv':
   Metadata:
     ENCODER         : Lavf57.21.101
   Duration: 00:01:00.00, start: 0.000000, bitrate: 457 kb/s
     Stream #0:0: Video: mpeg2video (Main), yuv420p(tv), 720x480 [SAR 1:1
 DAR 3:2], max. 104857 kb/s, 25 fps, 25 tbr, 1k tbn, 50 tbc (default)
     Metadata:
       ENCODER         : Lavc57.21.100 mpeg2video
       DURATION        : 00:01:00.000000000
 [libx264 @ 0x556d98f38660] using SAR=1/1
 [libx264 @ 0x556d98f38660] using cpu capabilities: MMX2 SSE2Fast SSSE3
 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
 [libx264 @ 0x556d98f38660] profile High, level 3.0
 [libx264 @ 0x556d98f38660] 264 - core 148 r2579 73ae2d1 - H.264/MPEG-4 AVC
 codec - Copyleft 2003-2015 - 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=25
 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, matroska, to 'test-mpeg2-pad.mkv':
   Metadata:
     encoder         : Lavf57.21.101
     Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p,
 720x540 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 1k tbn, 25 tbc (default)
     Metadata:
       DURATION        : 00:01:00.000000000
       encoder         : Lavc57.21.100 libx264
     Side data:
       unknown side data type 10 (24 bytes)
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
 Press [q] to stop, [?] for help
 frame= 1500 fps=150 q=-1.0 Lsize=    8573kB time=00:00:59.92
 bitrate=1172.1kbits/s speed=5.97x
 video:8562kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.131952%
 [libx264 @ 0x556d98f38660] frame I:6     Avg QP:13.82  size: 17628
 [libx264 @ 0x556d98f38660] frame P:1143  Avg QP:23.67  size:  6392
 [libx264 @ 0x556d98f38660] frame B:351   Avg QP:26.88  size:  3859
 [libx264 @ 0x556d98f38660] consecutive B-frames: 59.4% 26.0%  6.6%  8.0%
 [libx264 @ 0x556d98f38660] mb I  I16..4: 75.2% 15.6%  9.2%
 [libx264 @ 0x556d98f38660] mb P  I16..4:  2.3%  4.0%  0.4%  P16..4: 11.4%
 4.2%  1.9%  0.0%  0.0%    skip:75.8%
 [libx264 @ 0x556d98f38660] mb B  I16..4:  0.5%  0.4%  0.1%  B16..8: 15.0%
 2.2%  0.3%  direct: 5.3%  skip:76.3%  L0:51.7% L1:43.6% BI: 4.7%
 [libx264 @ 0x556d98f38660] 8x8 transform intra:55.7% inter:58.8%
 [libx264 @ 0x556d98f38660] coded y,uvDC,uvAC intra: 13.0% 45.5% 42.9%
 inter: 3.6% 13.4% 12.6%
 [libx264 @ 0x556d98f38660] i16 v,h,dc,p: 67% 29%  4%  0%
 [libx264 @ 0x556d98f38660] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  9% 10% 77%  1%
 1%  0%  1%  0%  1%
 [libx264 @ 0x556d98f38660] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 16% 50%  1%
 1%  1%  3%  1%  2%
 [libx264 @ 0x556d98f38660] i8c dc,h,v,p: 47% 22% 29%  2%
 [libx264 @ 0x556d98f38660] Weighted P-Frames: Y:0.0% UV:0.0%
 [libx264 @ 0x556d98f38660] ref P L0: 67.8%  8.5% 15.2%  8.5%
 [libx264 @ 0x556d98f38660] ref B L0: 84.9% 13.9%  1.3%
 [libx264 @ 0x556d98f38660] ref B L1: 97.0%  3.0%
 [libx264 @ 0x556d98f38660] kb/s:1168.92
 }}}

 {{{
 ☭ ./ffmpeg -i test-h264.mkv -vf pad=720:540:0:30:black test-h264-pad.mkv
 ffmpeg version N-77715-gfc703f5 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.3.0 (GCC)
   configuration: --enable-gpl --enable-debug --disable-stripping --enable-
 fontconfig --enable-libass --enable-libfreetype --enable-libfribidi
 --enable-libmodplug --enable-libmp3lame --enable-libopus --enable-libpulse
 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp
 --enable-libx264 --samples=/home/ux/fate-samples --assert-level=2
   libavutil      55. 12.100 / 55. 12.100
   libavcodec     57. 21.100 / 57. 21.100
   libavformat    57. 21.101 / 57. 21.101
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 23.100 /  6. 23.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, matroska,webm, from 'test-h264.mkv':
   Metadata:
     ENCODER         : Lavf57.21.101
   Duration: 00:01:00.00, start: 0.000000, bitrate: 1006 kb/s
     Stream #0:0: Video: h264 (High), yuv420p, 720x480 [SAR 1:1 DAR 3:2],
 25 fps, 25 tbr, 1k tbn, 50 tbc (default)
     Metadata:
       ENCODER         : Lavc57.21.100 libx264
       DURATION        : 00:01:00.000000000
 [libx264 @ 0x561e713ee820] using SAR=1/1
 [libx264 @ 0x561e713ee820] using cpu capabilities: MMX2 SSE2Fast SSSE3
 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
 [libx264 @ 0x561e713ee820] profile High, level 3.0
 [libx264 @ 0x561e713ee820] 264 - core 148 r2579 73ae2d1 - H.264/MPEG-4 AVC
 codec - Copyleft 2003-2015 - 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=25
 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, matroska, to 'test-h264-pad.mkv':
   Metadata:
     encoder         : Lavf57.21.101
     Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p,
 720x540 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 1k tbn, 25 tbc (default)
     Metadata:
       DURATION        : 00:01:00.000000000
       encoder         : Lavc57.21.100 libx264
     Side data:
       unknown side data type 10 (24 bytes)
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
 Press [q] to stop, [?] for help
 frame= 1500 fps=152 q=-1.0 Lsize=    7188kB time=00:00:59.92 bitrate=
 982.7kbits/s speed=6.08x
 video:7176kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.157405%
 [libx264 @ 0x561e713ee820] frame I:6     Avg QP:12.68  size: 15801
 [libx264 @ 0x561e713ee820] frame P:989   Avg QP:23.22  size:  5493
 [libx264 @ 0x561e713ee820] frame B:505   Avg QP:28.78  size:  3606
 [libx264 @ 0x561e713ee820] consecutive B-frames: 37.7% 49.7%  7.2%  5.3%
 [libx264 @ 0x561e713ee820] mb I  I16..4: 74.7% 12.7% 12.6%
 [libx264 @ 0x561e713ee820] mb P  I16..4:  1.6%  2.7%  0.2%  P16..4:  9.1%
 4.3%  2.6%  0.0%  0.0%    skip:79.4%
 [libx264 @ 0x561e713ee820] mb B  I16..4:  0.2%  0.1%  0.1%  B16..8: 14.1%
 2.9%  0.8%  direct: 1.9%  skip:79.8%  L0:47.4% L1:46.2% BI: 6.4%
 [libx264 @ 0x561e713ee820] 8x8 transform intra:53.1% inter:35.8%
 [libx264 @ 0x561e713ee820] coded y,uvDC,uvAC intra: 5.6% 16.3% 14.4%
 inter: 4.0% 8.6% 7.4%
 [libx264 @ 0x561e713ee820] i16 v,h,dc,p: 61% 36%  2%  0%
 [libx264 @ 0x561e713ee820] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  3%  9% 86%  0%
 0%  0%  0%  0%  0%
 [libx264 @ 0x561e713ee820] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 19% 41%  1%
 1%  1%  2%  1%  3%
 [libx264 @ 0x561e713ee820] i8c dc,h,v,p: 57% 23% 19%  0%
 [libx264 @ 0x561e713ee820] Weighted P-Frames: Y:0.0% UV:0.0%
 [libx264 @ 0x561e713ee820] ref P L0: 54.2%  7.5% 23.7% 14.6%
 [libx264 @ 0x561e713ee820] ref B L0: 76.2% 22.5%  1.3%
 [libx264 @ 0x561e713ee820] ref B L1: 97.6%  2.4%
 [libx264 @ 0x561e713ee820] kb/s:979.72
 }}}

 The two output files {{{test-h264-pad.mkv}}} and {{{test-mpeg2-pad.mkv}}}
 looks perfectly fine.

 @SarasotaSlim: so as said before, please provide the requested information
 since your issue is not reproducible.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5123#comment:5>
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