[FFmpeg-trac] #531(undetermined:open): failure to extract DVB-Teletext track (zero-length file)

[FFmpeg]

#531: failure to extract DVB-Teletext track (zero-length file)
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             Reporter:  BrianEnigma  |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
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Comment (by reimar):

 Teletext packets are never marked as keyframes (no idea whether that
 should be considered correct or not).
 You will get data if you use the -copyinkf option.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/531#comment:5>
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