[FFmpeg-user] inconsistent ffmpeg results when running same command on different machines

Frank Schwieterman fschwiet at gmail.com
Sun Aug 11 23:51:49 CEST 2013


  I am running the same ffmpeg command against the same input data on PC
and Mac, but am seeing slight differences in the output.  I suspect the
ffmpeg configuration is different...  Is it possible to configure things
such that I'd get the same result from both machines?  Can I reasonably get
a binary match?  I suspect I'll need to keep ffmpeg versions in sync (which
I can do) and keep the configurations in sync (which I'll have to learn).

  Some tracing of the command ran are below, I am clipping 100ms from a
300ms video as a test.  Attached are files with the actual console output.

on my Mac:
ffmpeg returned 0 with result hashed as
db19391b6dc9299c4b85ea6850adfb4146854fdf when invoked with [
    "-nostats",
    "-y",
    "-i",
    "/Users/user/src/videoplayer/media/300ms.mp4",
    "-ss",
    0.1,
    "-to",
    0.2,

"/Users/user/src/videoplayer/temp/media/97c1ff6f-08ec-4c2c-a762-135109bc0996.mp4"
]

on my PC:
ffmpeg returned 0 with result hashed as
34654f2aa267ea9f63d94ae0cd024dcac7240414 when invoked with [
    "-nostats",
    "-y",
    "-i",
    "C:\\src\\videoplayer\\media\\300ms.mp4",
    "-ss",
    0.1,
    "-to",
    0.2,

"C:\\src\\videoplayer\\temp\\media\\7ae5530f-6893-4cec-9c69-1d4a7c90dab8.mp4"
]
-------------- next part --------------
opffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
  built on Jul 25 2013 13:33:41 with Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)
  configuration: --prefix=/opt/boxen/homebrew/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  libavutil      52. 18.100 / 52. 18.100
  libavcodec     54. 92.100 / 54. 92.100
  libavformat    54. 63.104 / 54. 63.104
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 42.103 /  3. 42.103
  libswscale      2.  2.100 /  2.  2.100

  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/user/src/videoplayer/media/300ms.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf54.63.104
  Duration: 00:00:00.33, start: 0.030667, bitrate: 8488 kb/s

    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 9189 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 59.94 tbc
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 136 kb/s
    Metadata:
      handler_name    : SoundHandler

[libx264 @ 0x7ff461908e00] using SAR=1/1

[libx264 @ 0x7ff461908e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX

[libx264 @ 0x7ff461908e00] profile High, level 4.0

[libx264 @ 0x7ff461908e00] 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=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, mp4, to '/Users/user/src/videoplayer/temp/media/97c1ff6f-08ec-4c2c-a762-135109bc0996.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf54.63.104

    Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 11988 tbn, 29.97 tbc
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s
    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=    3 fps=0.0 q=-1.0 Lsize=     132kB time=00:00:00.11 bitrate=9528.7kbits/s dup=6 drop=0    
video:128kB audio:2kB subtitle:0 global headers:0kB muxing overhead 1.026052%

[libx264 @ 0x7ff461908e00] frame I:1     Avg QP:25.48  size: 83580
[libx264 @ 0x7ff461908e00] 
frame P:1     Avg QP:28.10  size: 31075
[libx264 @ 0x7ff461908e00] frame B:1     Avg QP:29.18  size: 16077
[libx264 @ 0x7ff461908e00] consecutive B-frames: 33.3% 66.7%  0.0%  0.0%
[libx264 @ 0x7ff461908e00] mb I  I16..4: 21.5% 53.8% 24.7%

[libx264 @ 0x7ff461908e00] mb P  I16..4:  5.1%  5.6%  2.1%  P16..4: 39.4% 14.2%  5.1%  0.0%  0.0%    skip:28.5%
[libx264 @ 0x7ff461908e00] mb B  I16..4:  0.4%  0.2%  0.2%  B16..8: 40.4%  8.0%  1.6%  direct: 1.8%  skip:47.4%  L0:37.4% L1:54.4% BI: 8.1%
[libx264 @ 0x7ff461908e00] 8x8 transform intra:52.4% inter:67.0%
[libx264 @ 0x7ff461908e00] coded y,uvDC,uvAC intra: 54.2% 69.9% 24.2% inter: 13.9% 18.0% 0.2%
[libx264 @ 0x7ff461908e00] i16 v,h,dc,p: 31% 34%  8% 26%
[libx264 @ 0x7ff461908e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 25% 13%  6%  5%  6%  7%  7%  8%
[libx264 @ 0x7ff461908e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 24% 12%  6%  5%  6%  5%  5%  5%
[libx264 @ 0x7ff461908e00] i8c dc,h,v,p: 44% 25% 23%  7%
[libx264 @ 0x7ff461908e00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7ff461908e00] kb/s:10448.10
-------------- next part --------------
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers

  built on Mar 28 2013 00:34:08 with gcc 4.8.0 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil      52. 18.100 / 52. 18.100
  libavcodec     54. 92.100 / 54. 92.100
  libavformat    54. 63.104 / 54. 63.104
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 42.103 /  3. 42.103
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\src\videoplayer\media\300ms.mp4':
  Metadata:
    major_brand     : 
isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf54.63.10
4

  Duration: 00:00:00.33, start: 
0.030667, bitrate: 8488 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 9189 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 59.94 tbc
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 136 kb/s
    Metadata:
      handler_name    : SoundHandler

[libx264 @ 0000000002246da0] using SAR=1/1

[libx264 @ 0000000002246da0] using cpu capabilities: MMX2 SSE2Fast SSEMisalign LZCNT

[libx264 @ 0000000002246da0] profile High, level 4.0

[libx264 @ 0000000002246da0] 264 - core 130 r2274 c832fe9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - 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, mp4, to 'C:\src\videoplayer\temp\media\7ae5530f-6893-4cec-9c69-1d4a7c90dab8.mp4':
  Metadata:

    major_brand     : isom
    minor_version   : 
512

    compatible_brands: isomiso2avc1mp41

    encoder         : 
Lavf54.63.104


    Stream #0:0
(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1
, 11988 tbn
, 29.97 tbc

    Metadata:
      handler_name    : 
VideoHandler


    Stream #0:1
(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s

    Metadata:

      handler_name    : 
SoundHandler

Stream mapping:
  Stream #0:0 -> #0:0
 (h264 -> libx264)

  Stream #0:1 -> #0:1
 (aac -> libvo_aacenc)

Press [q] to stop, [?] for help

frame=    3 fps=0.0 q=-1.0 Lsize=     133kB time=00:00:00.12 bitrate=8851.7kbits/s dup=6 drop=0    

video:129kB audio:3kB subtitle:0 global headers:0kB muxing overhead 1.029447%

[libx264 @ 0000000002246da0] frame I:1     Avg QP:25.51  size: 83461
[libx264 @ 0000000002246da0] frame P:1     Avg QP:27.85  size: 30995
[libx264 @ 0000000002246da0] frame B:1     Avg QP:28.70  size: 16517
[libx264 @ 0000000002246da0] consecutive B-frames: 33.3% 66.7%  0.0%  0.0%
[libx264 @ 0000000002246da0] mb I  I16..4: 23.5% 51.7% 24.9%
[libx264 @ 0000000002246da0] mb P  I16..4:  4.8%  5.6%  2.3%  P16..4: 40.2% 14.2%  4.8%  0.0%  0.0%    skip:28.2%
[libx264 @ 0000000002246da0] mb B  I16..4:  0.5%  0.3%  0.3%  B16..8: 40.8%  8.5%  1.5%  direct: 1.7%  skip:46.5%  L0:37.2% L1:54.1% BI: 8.7%
[libx264 @ 0000000002246da0] 8x8 transform intra:50.6% inter:66.4%
[libx264 @ 0000000002246da0] coded y,uvDC,uvAC intra: 54.0% 70.2% 24.0% inter: 14.1% 18.0% 0.3%
[libx264 @ 0000000002246da0] i16 v,h,dc,p: 35% 33%  7% 24%
[libx264 @ 0000000002246da0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 22% 15%  6%  5%  6%  7%  7%  8%
[libx264 @ 0000000002246da0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 24% 13%  5%  5%  6%  6%  5%  5%
[libx264 @ 0000000002246da0] i8c dc,h,v,p: 44% 26% 23%  7%
[libx264 @ 0000000002246da0] Weighted P-Frames: Y:0.0% UV:0.0%

[libx264 @ 0000000002246da0] kb/s:10467.36


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