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

[FFmpeg]

#879: mxf files without FooterPartition
----------------------------------+--------------------------------------
             Reporter:  zhukov    |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  git-master
             Keywords:  mxf       |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 git-master
 ffmpeg -i test.mxf
 outputs the following

 [mxf @ 0x7fce6183d800] inconsistent FooterPartition value: 1132608274 !=
 4294967296
 [mxf @ 0x7fce6183d800] PreviousPartition points to this partition or
 forward
 [mxf @ 0x7fce6183d800] error reading header metadata

 ffmpeg 0.7.8 works fine on the very same file

 my rough ideas why that might be:
 ./libavformat/mxfdec.c:458
     footer_partition = avio_rb64(pb);
 wants to output -1

 i created a small patch

 diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
 index 10512ef..43f247a 100644
 --- a/libavformat/mxfdec.c
 +++ b/libavformat/mxfdec.c
 @@ -464,7 +464,7 @@ static int mxf_read_partition_pack(void *arg,
 AVIOContext *pb, int tag, int size
      avio_read(pb, op, sizeof(UID));

      /* some files don'thave FooterPartition set in every partition */
 -    if (footer_partition) {
 +    if (footer_partition != 4294967296) {
          if (mxf->footer_partition && mxf->footer_partition !=
 footer_partition) {
              av_log(mxf->fc, AV_LOG_ERROR, "inconsistent FooterPartition
 value: %" PRIi64 " != %" PRIi64 "\n",
                     mxf->footer_partition, footer_partition);

 which did not help

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/879>
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