[FFmpeg-trac] #879(avformat:new): mxf files without FooterPartition

[FFmpeg]

#879: mxf files without FooterPartition
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             Reporter:  zhukov      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  mxf         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by reimar):

 >    footer_partition = avio_rb64(pb);
 >
 > wants to output -1

 The value you give (4294967296) is not even close to -1, this is a 64 bit
 value (otherwise files > 4 GB wouldn't be possible).
 In addition, according to the code the value for "not set" should be 0,
 not -1.
 The code probably should take the file size into account when deciding
 which to use, however it happens to pick the right one anyway.
 As for decoding, it looks like somehow pix_fmt doesn't get set at the
 right point.
 The strange thing is that MPlayer works just fine.
 It seems to me that somehow frame multithreading is enabled and that
 breaks try_decode_frame.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/879#comment:10>
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