Opened 6 years ago

Closed 6 years ago

Last modified 6 years ago

#3399 closed defect (duplicate)

Bad output framerate decision for mp4 from camera

Reported by: mressler Owned by:
Priority: normal Component: avformat
Version: git-master Keywords: fps mov
Cc: Blocked By:
Blocking: Reproduced by developer: yes
Analyzed by developer: no

Description

Summary of the bug:

Attempting to scale an MP4/H264 1920x1080 source video to 1024:-1 (also Mp4/H264) results in odd playback in different players. VLC shows green box artifacts, QuickTime? and MPlayer both show jerky/slow playback.

How to reproduce:

(Grab source from: https://www.dropbox.com/s/thy8zxbvx1ygqru/VID_20130619_161750_449.mp4)

% ffmpeg -i VID_20130619_161750_449.mp4 -vf "scale=1024:-1" VID_scaled.mp4

VID_scaled.mp4 ends up with green artifacts in VLC and doesn't play appropriately in QuickTime? or MPlayer.

Interestingly, if I clip the video first via:

% ffmpeg -i VID_20130619_161750_449.mp4 -ss 18 -t 15 -c:v copy -c:a copy clip2.mp4

And then run the scale command:

% ffmpeg -i clip2.mp4 -vf "scale=1024:-1" VID_clip_scaled.mp4

The resulting video plays fine in VLC, QuickTime?, and MPlayer.

Change History (11)

comment:1 Changed 6 years ago by llogan

To make this a valid ticket please include the complete console output for each command. Otherwise we can only make guesses.

comment:2 Changed 6 years ago by mressler

(I don't see a way to edit the description above, so here's a new description with full output.)

Summary of the bug:

Attempting to scale an MP4/H264 1920x1080 source video to 1024:-1 (also Mp4/H264) results in odd playback in different players. VLC shows green box artifacts, QuickTime?? and MPlayer both show jerky/slow playback.

How to reproduce:

(Grab source from: ​https://www.dropbox.com/s/thy8zxbvx1ygqru/VID_20130619_161750_449.mp4)

% ffmpeg -i VID_20130619_161750_449.mp4 -vf "scale=1024:-1" VID_scaled.mp4
ffmpeg version 2.1.3 Copyright (c) 2000-2013 the FFmpeg developers
  built on Feb 17 2014 12:57:49 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.1.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  libavutil      52. 48.101 / 52. 48.101
  libavcodec     55. 39.101 / 55. 39.101
  libavformat    55. 19.104 / 55. 19.104
  libavdevice    55.  5.100 / 55.  5.100
  libavfilter     3. 90.100 /  3. 90.100
  libavresample   1.  1.  0 /  1.  1.  0
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VID_20130619_161750_449.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    creation_time   : 2013-06-19 20:18:49
  Duration: 00:00:58.05, start: 0.000000, bitrate: 15706 kb/s
    Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : SoundHandle
    Stream #0:1(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 15469 kb/s, SAR 65536:65536 DAR 16:9, 29.89 fps, 1k tbr, 1k tbn, 2k tbc (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : VideoHandle
File 'VID_scaled.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x7fc0f2863c00] using SAR=1/1
[libx264 @ 0x7fc0f2863c00] MB rate (2304000) > level limit (2073600)
[libx264 @ 0x7fc0f2863c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x7fc0f2863c00] profile High, level 5.2
[libx264 @ 0x7fc0f2863c00] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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=12 lookahead_threads=2 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, mp4, to 'VID_scaled.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    encoder         : Lavf55.19.104
    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], q=-1--1, 16k tbn, 1k tbc (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : VideoHandle
    Stream #0:1(eng): Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : SoundHandle
Stream mapping:
  Stream #0:1 -> #0:0 (h264 -> libx264)
  Stream #0:0 -> #0:1 (aac -> libfaac)
Press [q] to stop, [?] for help
frame=58016 fps=149 q=-1.0 Lsize=   47319kB time=00:00:58.01 bitrate=6681.8kbits/s dup=56281 drop=0    
video:45706kB audio:890kB subtitle:0 global headers:0kB muxing overhead 1.551760%
[libx264 @ 0x7fc0f2863c00] frame I:241   Avg QP:19.11  size: 59516
[libx264 @ 0x7fc0f2863c00] frame P:15706 Avg QP:21.99  size:  1876
[libx264 @ 0x7fc0f2863c00] frame B:42069 Avg QP:32.95  size:    71
[libx264 @ 0x7fc0f2863c00] consecutive B-frames:  3.2%  0.2%  0.5% 96.1%
[libx264 @ 0x7fc0f2863c00] mb I  I16..4:  5.1% 69.1% 25.8%
[libx264 @ 0x7fc0f2863c00] mb P  I16..4:  0.0%  0.2%  0.1%  P16..4:  7.9%  2.8%  2.1%  0.0%  0.0%    skip:86.9%
[libx264 @ 0x7fc0f2863c00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  3.3%  0.0%  0.0%  direct: 0.0%  skip:96.7%  L0:26.8% L1:73.2% BI: 0.0%
[libx264 @ 0x7fc0f2863c00] 8x8 transform intra:69.6% inter:59.9%
[libx264 @ 0x7fc0f2863c00] coded y,uvDC,uvAC intra: 92.9% 68.7% 35.0% inter: 1.4% 1.0% 0.0%
[libx264 @ 0x7fc0f2863c00] i16 v,h,dc,p: 14% 11%  5% 70%
[libx264 @ 0x7fc0f2863c00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 16% 22%  5%  8%  9%  8%  6%  8%
[libx264 @ 0x7fc0f2863c00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 15% 10%  6% 10% 11%  8%  6%  7%
[libx264 @ 0x7fc0f2863c00] i8c dc,h,v,p: 51% 19% 23%  7%
[libx264 @ 0x7fc0f2863c00] Weighted P-Frames: Y:0.4% UV:0.0%
[libx264 @ 0x7fc0f2863c00] ref P L0: 81.7% 12.1%  5.9%  0.4%  0.0%
[libx264 @ 0x7fc0f2863c00] ref B L0: 95.8%  4.2%  0.0%
[libx264 @ 0x7fc0f2863c00] ref B L1: 85.4% 14.6%
[libx264 @ 0x7fc0f2863c00] kb/s:6453.67

VID_scaled.mp4 ends up with green artifacts in VLC and doesn't play appropriately in QuickTime?? or MPlayer.
Interestingly, if I clip the video first via:

% ffmpeg -i VID_20130619_161750_449.mp4 -ss 18 -t 15 -c:v copy -c:a copy clip2.mp4
ffmpeg version 2.1.3 Copyright (c) 2000-2013 the FFmpeg developers
  built on Feb 17 2014 12:57:49 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.1.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  libavutil      52. 48.101 / 52. 48.101
  libavcodec     55. 39.101 / 55. 39.101
  libavformat    55. 19.104 / 55. 19.104
  libavdevice    55.  5.100 / 55.  5.100
  libavfilter     3. 90.100 /  3. 90.100
  libavresample   1.  1.  0 /  1.  1.  0
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VID_20130619_161750_449.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    creation_time   : 2013-06-19 20:18:49
  Duration: 00:00:58.05, start: 0.000000, bitrate: 15706 kb/s
    Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : SoundHandle
    Stream #0:1(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 15469 kb/s, SAR 65536:65536 DAR 16:9, 29.89 fps, 1k tbr, 1k tbn, 2k tbc (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : VideoHandle
File 'clip2.mp4' already exists. Overwrite ? [y/N] y
Output #0, mp4, to 'clip2.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    encoder         : Lavf55.19.104
    Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 65536:65536 DAR 16:9], q=2-31, 15469 kb/s, 29.89 fps, 16k tbn, 1k tbc (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : VideoHandle
    Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, 128 kb/s (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : SoundHandle
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
  Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=  444 fps=0.0 q=-1.0 Lsize=   28323kB time=00:00:15.00 bitrate=15462.3kbits/s    
video:28072kB audio:234kB subtitle:0 global headers:0kB muxing overhead 0.057352%

And then run the scale command:

% ffmpeg -i clip2.mp4 -vf "scale=1024:-1" VID_clip_scaled.mp4
ffmpeg version 2.1.3 Copyright (c) 2000-2013 the FFmpeg developers
  built on Feb 17 2014 12:57:49 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.1.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  libavutil      52. 48.101 / 52. 48.101
  libavcodec     55. 39.101 / 55. 39.101
  libavformat    55. 19.104 / 55. 19.104
  libavdevice    55.  5.100 / 55.  5.100
  libavfilter     3. 90.100 /  3. 90.100
  libavresample   1.  1.  0 /  1.  1.  0
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'clip2.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf55.19.104
  Duration: 00:00:15.00, start: 0.005011, bitrate: 15466 kb/s
    Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 15542 kb/s, 30.01 fps, 30 tbr, 16k tbn, 32k tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
[libx264 @ 0x7ff8c48f1200] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x7ff8c48f1200] profile High, level 3.1
[libx264 @ 0x7ff8c48f1200] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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=12 lookahead_threads=2 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, mp4, to 'VID_clip_scaled.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf55.19.104
    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1024x576, q=-1--1, 15360 tbn, 30 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> libx264)
  Stream #0:1 -> #0:1 (aac -> libfaac)
Press [q] to stop, [?] for help
frame=  451 fps= 56 q=-1.0 Lsize=    2622kB time=00:00:15.00 bitrate=1432.0kbits/s dup=7 drop=0    
video:2370kB audio:235kB subtitle:0 global headers:0kB muxing overhead 0.674256%
[libx264 @ 0x7ff8c48f1200] frame I:2     Avg QP:21.56  size: 57176
[libx264 @ 0x7ff8c48f1200] frame P:168   Avg QP:24.62  size: 10380
[libx264 @ 0x7ff8c48f1200] frame B:281   Avg QP:27.22  size:  2020
[libx264 @ 0x7ff8c48f1200] consecutive B-frames:  0.4% 27.1% 67.2%  5.3%
[libx264 @ 0x7ff8c48f1200] mb I  I16..4:  6.5% 64.9% 28.6%
[libx264 @ 0x7ff8c48f1200] mb P  I16..4:  0.2%  1.5%  0.5%  P16..4: 44.3% 13.9%  9.8%  0.0%  0.0%    skip:29.9%
[libx264 @ 0x7ff8c48f1200] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8: 49.8%  2.1%  0.3%  direct: 0.4%  skip:47.3%  L0:39.9% L1:57.4% BI: 2.6%
[libx264 @ 0x7ff8c48f1200] 8x8 transform intra:66.9% inter:72.6%
[libx264 @ 0x7ff8c48f1200] coded y,uvDC,uvAC intra: 79.3% 58.4% 20.6% inter: 12.6% 5.9% 0.2%
[libx264 @ 0x7ff8c48f1200] i16 v,h,dc,p: 22% 25%  5% 48%
[libx264 @ 0x7ff8c48f1200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 13% 20%  5% 12% 12% 11%  6%  8%
[libx264 @ 0x7ff8c48f1200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 13% 14%  5% 12% 13%  9%  6%  5%
[libx264 @ 0x7ff8c48f1200] i8c dc,h,v,p: 55% 19% 18%  8%
[libx264 @ 0x7ff8c48f1200] Weighted P-Frames: Y:5.4% UV:0.0%
[libx264 @ 0x7ff8c48f1200] ref P L0: 60.9% 17.9% 15.4%  5.7%  0.1%
[libx264 @ 0x7ff8c48f1200] ref B L0: 81.3% 16.3%  2.5%
[libx264 @ 0x7ff8c48f1200] ref B L1: 88.1% 11.9%
[libx264 @ 0x7ff8c48f1200] kb/s:1290.94

The resulting video plays fine in VLC, QuickTime??, and MPlayer.

comment:3 Changed 6 years ago by cehoyos

Is the problem also reproducible without using an external library (using -vcodec mpeg4)?
And please test current FFmpeg git head.

comment:4 Changed 6 years ago by cehoyos

  • Reproduced by developer set
  • Status changed from new to open
  • Summary changed from Scaling MP4 Video results in bad output MP4 to Bad output framerate decision for mp4 from camera
  • Version changed from 2.1.3 to git-master

Unrelated to scaling, work-around is to use -r 30000/1001

$ ffmpeg -i VID_20130619_161750_449.mp4 -qscale 2 -strict -2 -vcodec mpeg4 out.mov
ffmpeg version N-60713-g1355caf Copyright (c) 2000-2014 the FFmpeg developers
  built on Feb 18 2014 16:50:43 with gcc 4.7 (SUSE Linux)
  configuration: --enable-gpl --enable-gray
  libavutil      52. 64.100 / 52. 64.100
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 33.100 / 55. 33.100
  libavdevice    55. 10.100 / 55. 10.100
  libavfilter     4.  1.102 /  4.  1.102
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VID_20130619_161750_449.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    creation_time   : 2013-06-19 20:18:49
  Duration: 00:00:58.05, start: 0.000000, bitrate: 15706 kb/s
    Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : SoundHandle
    Stream #0:1(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 15469 kb/s, SAR 65536:65536 DAR 16:9, 29.89 fps, 1k tbr, 1k tbn, 2k tbc (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : VideoHandle
Please use -q:a or -q:v, -qscale is ambiguous
Output #0, mov, to 'out.mov':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    encoder         : Lavf55.33.100
    Stream #0:0(eng): Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 16k tbn, 1k tbc (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : VideoHandle
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2013-06-19 20:18:49
      handler_name    : SoundHandle
Stream mapping:
  Stream #0:1 -> #0:0 (h264 -> mpeg4)
  Stream #0:0 -> #0:1 (aac -> aac)
Press [q] to stop, [?] for help
frame=58016 fps=330 q=2.0 Lsize= 1132027kB time=00:00:58.01 bitrate=159845.0kbits/s dup=56281 drop=0
video:1130841kB audio:894kB subtitle:0 data:0 global headers:0kB muxing overhead 0.025849%

comment:5 Changed 6 years ago by cehoyos

  • Keywords fps mov added
  • Resolution set to duplicate
  • Status changed from open to closed

Looks like a duplicate of ticket #2958

comment:6 follow-up: Changed 6 years ago by mressler

So -r will force the framerate, but how did you know to use those values? What about the source video caused the bad decision to be made by ffmpeg? I ask so that I can detect this automatically for my users in the future.

Is it a good idea to always manually force the framerate?

The sample command you ran didn't include the -r option?

comment:7 in reply to: ↑ 6 Changed 6 years ago by cehoyos

Replying to mressler:

The sample command you ran didn't include the -r option?

I did not want to post a working command line but an as-simple-as-possible command line that allows to reproduce the problem (and avoids using an external library). Note that I missed the issue originally because of the noisy x264 output.

The FFmpeg mov muxer only supports cfr, if your input file is vfr, frames are dropped and / or duplicated to produce cfr output. Knowing the correct frame-rate is not always easy.

comment:8 follow-up: Changed 6 years ago by mressler

Ah, gotcha. Thanks for the help. What's the easiest way to tell if the source video is VFR? What method did you use to determine the correct frame-rate? Any pointers here are much appreciated.

comment:10 in reply to: ↑ 8 Changed 6 years ago by cehoyos

Replying to mressler:

What's the easiest way to tell if the source video is VFR?

I looked at FFmpeg's console output and saw that many frames were duplicated.
(Some formats are by definition vfr, other by definition cfr, but this is not what this ticket is about.)

What method did you use to determine the correct frame-rate?

I looked at FFmpeg's output and saw an actual average framerate.

comment:11 Changed 6 years ago by cehoyos

  • Component changed from undetermined to avformat
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