[FFmpeg-trac] #6051(avformat:new): Detect srt without index

[FFmpeg]

#6051: Detect srt without index
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             Reporter:  cehoyos      |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  srt          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Cigaes):

 The VLC ticket says there is a hiccup with the MPlayer's playback. Anyway,
 I would not take MPlayer as a reference for reliable behaviour in that
 area; the ASS parser will eat comas in certain circumstances for example.

 Supporting a non-standard variant of a format encourages people to use it,
 possibly unwittingly, and puts pressure to other implementations to
 support it: more work and less reliability for everybody.

 I think we should consider it only if either (1) the files are not easily
 fixable, or (2) significant other implementations support them too, or (3)
 we know where these files come from and they will keep coming. When none
 of these conditions are met, I think we should close as WONTFIX and tell
 people to fix their files.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6051#comment:3>
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