[FFmpeg-trac] #5017(avformat:new): av_seek_frame on MXF failed to seek with latest ffmpeg

[FFmpeg]

#5017: av_seek_frame on MXF failed to seek with latest ffmpeg
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             Reporter:  verem     |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  unspecified
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 Hi,

 with current git of ffmpeg i found that seeking in MXF stop working.

 simple code:

 av_seek_frame(fmt_ctx, -1, fmt_ctx->start_time, AVSEEK_FLAG_BACKWARD)

 return *-1* with latest MXF, but returns with n2.6-dev-2073-g5440076 it
 returns *0*

 source of test code attached, MXF file could be downloaded from
 http://downloads.m1stereo.tv/b7e45b6c33493f8f607803257426cbc5/

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Ticket URL: <https://trac.ffmpeg.org/ticket/5017>
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