[FFmpeg-user] Avid opAtom trouble

Bouke (VideoToolShed) bouke at videotoolshed.com
Tue May 2 15:46:51 EEST 2017


Hi guys,
Toying around with Avid opAtom mxf, generating test clips.
When I look at the clip in Avid, the bin info shows a raster dimension of 
1920x1088, pixel aspect ratio of 1.007 (expected 1920x1080 / 1.000)
And of course, when editing the clip into a seqence, frameflex kicks in.

same line but output to Mov and AMA the clip in does give the expected 
result.

Am I missing something or is this a bug?

Next, what kind of metadata besides the clip name / timecode is supported?

thx,
Bouke

ffmpeg -f lavfi -i "testsrc=size=1920x1080:rate=25" -frames:v 10 -f 
mxf_opatom -vcodec dnxhd -pix_fmt yuv422p -vb 120M -timecode 
01:02:03:04 -metadata material_package_name="rastertest" -flags +ildct -top 
1 -y "M:\Avid Mediafiles\MXF\2\test.mxf"

ffmpeg version N-85653-gb4330a0 Copyright (c) 2000-2017 the FFmpeg 
developers
  built with gcc 6.3.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid 
 --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth 
 --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv 
 --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype 
 --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame 
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264  
--enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr 
 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab 
 --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack 
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid 
 --enable-libzimg --enable-lzma --enable-zlib
  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. 87.100 /  6. 87.100
  libswscale      4.  7.101 /  4.  7.101
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
Input #0, lavfi, from 'testsrc=size=1920x1080:rate=25':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1920x1080 
[SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> dnxhd (native))
Press [q] to stop, [?] for help
Output #0, mxf_opatom, to 'M:\Avid MediaFiles\MXF\2\tst1.mxf':
  Metadata:
    timecode        : 01:02:03:04
    material_package_name: raster test
    encoder         : Lavf57.72.101
    Stream #0:0: Video: dnxhd (DNXHD), yuv422p, 1920x1080 [SAR 1:1 DAR 
16:9], q=2-1024, 120000 kb/s, 25 fps, 25 tbn, 25 tbc
    Metadata:
      encoder         : Lavc57.93.100 dnxhd
frame=   10 fps=0.0 q=1.0 Lsize=    5927kB time=00:00:00.40 
bitrate=121375.9kbits/s speed=2.38x
video:5920kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB 
muxing overhead: 0.110738%


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