[FFmpeg-trac] #5976(avformat:new): flv encoding for live stream no longer usable

[FFmpeg]

#5976: flv encoding for live stream no longer usable
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             Reporter:  jyavenard   |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by stevenliu):

 If the rtmp isn't seekable, ffmpeg cannot update the metadata. and ffmpeg
 will give you a warning message,
 there have many flv living stream have no metadata, then the server will
 modify, add or fix it.
 of course, if you think non-seekable don't update(NOT no) duration and
 filesize is a better way, i think ffmpeg need a patch to add option for
 choose by users, because there have many server and player reading the
 duration and filesize first, if no the duration and filesize use stream
 mode. when the filesize and duration error when it is 0, That's a fetal
 error.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5976#comment:2>
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