Trying to transcode a mxf prores video file (spanned) to mov x264

[Eric Pardee]

Summary of the bug:

With the Canon EOS C300, it spans clips. In our case, these clips are being ingested into Avid Media Composer and the video is encoded to ProRes. Generally we transcode each part of the spanned clip and then concatenate the clips together to form one clip. However, with ProRes in particular, the first clip of the spanned clips will transcode but the remaining clips will not.
I've tried explicitly specifying the format, the video codec, ffmbc, but I keep encountering: Output file #0 does not contain any stream

How to reproduce:

/home/pw/bin/ffmpeg -c:v:0 prores -r 23.98 -i /mnt/loadingdock_tc1/.A00001V01.D435447D_580FF66A060a2b340101010101010f0013000000580ff66a8f4e0162060e2b347f7f2a80.mxf -b:v 800k -maxrate 800k -s 320x240 -vcodec copy -y -threads 0 -report '/tmp/media/BZ0_MEDIA/LOCAL/BZ01020A01/2BZ01020A01-1.mov'
ffmpeg started on 2016-11-02 at 16:33:51
Report written to "ffmpeg-20161102-163351.log"
ffmpeg version N-82119-g1342339 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
  configuration: --prefix=/home/pw/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/pw/ffmpeg_build/include --extra-ldflags=-L/home/pw/ffmpeg_build/lib --bindir=/home/pw/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
  libavutil      55. 33.100 / 55. 33.100
  libavcodec     57. 63.103 / 57. 63.103
  libavformat    57. 55.100 / 57. 55.100
  libavdevice    57.  0.103 / 57.  0.103
  libavfilter     6. 64.100 /  6. 64.100
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  2.100 /  2.  2.100
  libpostproc    54.  0.100 / 54.  0.100
[mxf @ 0x39c8fe0] invalid KAGSize 2097152 - guessing 1
[mxf @ 0x39c8fe0] material track 2: has 11 components
[mxf @ 0x39c8fe0] material track 3: has 11 components
[mxf @ 0x39c8fe0] material track 4: has 11 components
[mxf @ 0x39c8fe0] x >= nb_ptses - IndexEntryCount 7585 < IndexDuration 7584?
Input #0, mxf, from '/mnt/loadingdock_tc1/.A00001V01.D435447D_580FF66A060a2b340101010101010f0013000000580ff66a8f4e0162060e2b347f7f2a80.mxf':
  Metadata:
    project_name    : 2398_BALLERS
    uid             : ff420b2d-b7fa-e04f-a346-6e7a538f184a
    generation_uid  : b6bcfcab-70ff-7331-d7dc-925e69de11d2
    application_platform: AAFSDK (MacOS X)
    modification_date: 2016-10-26T00:22:40.000000Z
    product_uid     : acfbf03a-4f42-a231-d0b7-c06ecd3d4ad7
    product_version : Unknown version
    product_name    : Avid Media Composer 7.0.4.3735
    company_name    : Avid Technology, Inc.
    material_package_umid: 0x060A2B340101010101010F0013000000580FF66A8F4E0162060E2B347F7F2A80
    material_package_name: A00001.new.01
    comment__videobasename: CANON XF MPEG-2 422
    comment_CompanyName: CANON
    comment_Product : EOS C300
    comment_lastModifiedDate: 2012-05-20 19:14:34
    comment_TapeID  : BZ01020A01
  Duration: N/A, bitrate: N/A
    Stream #0:0: Data: none
    Metadata:
      file_package_umid: 0x060A2B340101010101010F0013000000580FF66A8F4F0162060E2B347F7F2A80
      track_name      : V1
      data_type       : video
    Stream #0:1: Data: none
    Metadata:
      file_package_umid: 0x060A2B340101010101010F0013000000580FF66A8F830162060E2B347F7F2A80
      track_name      : A1
      data_type       : audio
    Stream #0:2: Data: none
    Metadata:
      file_package_umid: 0x060A2B340101010101010F0013000000580FF66A8F8E0162060E2B347F7F2A80
      track_name      : A2
      data_type       : audio
Output #0, mov, to '/tmp/media/BZ0_MEDIA/LOCAL/BZ01020A01/2BZ01020A01-1.mov':

I have the full log/ouput of working first clip in spanned clips and the non-working clip.

[Eric Pardee]

First clip in spanned clips that does transcode

[Eric Pardee]

2nd clip in spanned clip, not working

[Carl Eugen Hoyos]

Please point us to a sample file.

[Eric Pardee]

Here is an example non-spanned prores video clip that will transcode:
​https://s3-us-west-2.amazonaws.com/mxf.pilotware.com/work-non-span.zip

Here is an example of a spanned prores video clips that will not transcode:
​https://s3-us-west-2.amazonaws.com/mxf.pilotware.com/non-work-spanned.zip

[Carl Eugen Hoyos]

Isn't there supposed to be audio in both files?

[Eric Pardee]

Hi, thanks for response. Yes, there are audio tracks but not applicable to my issue in this case (op-atom mxf files).

Here are commands you can use (unzip, cut & paste):

Non-spanned clip (works):
ffmpeg -c:v:0 prores -r 23.98 -i A00006V01.D43559BB_58100BA9.mxf -b:v 800k -maxrate 800k -s 320x240 -vcodec copy -y -threads 0 -report A00006V01-part2.mov

Spanned clip part1 (works):
ffmpeg -c:v:0 prores -r 23.98 -i A00006V01.D43559B9_58100BA7.mxf -b:v 800k -maxrate 800k -s 320x240 -vcodec copy -y -threads 0 -report A00006V01-part1.mov

Spanned clip part2 (fails with Output file #0 does not contain any stream):
ffmpeg -c:v:0 prores -r 23.98 -i A00005V01.D43559B4_58100BA4.mxf -b:v 800k -maxrate 800k -s 320x240 -vcodec copy -y -threads 0 -report A00005V01.mov

For some reason, even if you explicitly specify the video as prores, the 2nd part of a spanned clip will not get processed.

Thanks again

Eric

[Carl Eugen Hoyos]

Replying to dr_pardee:

Hi, thanks for response. Yes, there are audio tracks but not applicable to my issue in this case (op-atom mxf files).

Here are commands you can use (unzip, cut & paste):

Sorry, I don't understand: There is audio in the files and with the provided command lines, you can read it?

[Eric Pardee]

There is no audio in the files, these are video prores mxf files.
Stream #0:0 is Video: prores (apch / 0x68637061), yuv422p10le(progressive), 1920x1080 [SAR 1:1 DAR 16:9]

[Eric Pardee]

I apologize, I mixed up the last commands when I was posting.

Corrected:

Non-spanned clip (works):
ffmpeg -c:v:0 prores -r 23.98 -i A00005V01.D43559B4_58100BA4.mxf -b:v 800k -maxrate 800k -s 320x240 -vcodec copy -y -threads 0 -report A00005V01.mov

Spanned clip part1 (works):
ffmpeg -c:v:0 prores -r 23.98 -i A00006V01.D43559B9_58100BA7.mxf -b:v 800k -maxrate 800k -s 320x240 -vcodec copy -y -threads 0 -report A00006V01-part1.mov

Spanned clip part2 (fails with Output file #0 does not contain any stream):
ffmpeg -c:v:0 prores -r 23.98 -i A00006V01.D43559BB_58100BA9.mxf -b:v 800k -maxrate 800k -s 320x240 -vcodec copy -y -threads 0 -report A00006V01-part2.mov

The result of the first clip from ffmpeg is:
​https://drive.google.com/open?id=0B2zHnxqTQVYLUzdwY1hzU0EyN1k

Since the second clip is failing on the second part of the clip, here is the full clip exported via Avid Media Composer:
​https://drive.google.com/open?id=0B2zHnxqTQVYLaHhiMk1UYjFuSWc

Again, the source video files:

Here is an example non-spanned prores video clip that will transcode:
​​https://s3-us-west-2.amazonaws.com/mxf.pilotware.com/work-non-span.zip

Here is an example of a spanned prores video clips that will not transcode:
​​https://s3-us-west-2.amazonaws.com/mxf.pilotware.com/non-work-spanned.zip

[Carl Eugen Hoyos]

​http://ffmpeg.org/pipermail/ffmpeg-devel/2016-November/202301.html

[Carl Eugen Hoyos]

Should be fixed in 4590d073ccdc7c3ce0384d5b1fba56b3f6673535, thank you for the sample!