[FFmpeg-trac] #445(FFmpeg:new): Wrong FLV duration metadata field

FFmpeg trac at avcodec.org
Thu Sep 8 12:25:44 CEST 2011

#445: Wrong FLV duration metadata field
               Reporter:  burek      |                  Owner:  michael
                   Type:  defect     |                 Status:  new
               Priority:  minor      |              Component:  FFmpeg
                Version:  git-       |               Keywords:  flv meta
  master                             |  duration
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
 When ffmpeg is used like this:
 '''ffmpeg -t 00:00:30 -i valid.flv -acodec copy -vcodec copy
 (extracting a part of the video to a new file) then the resulting file
 (invalid.flv) contains wrong duration metadata field (copied from the
 original 'valid.flv') which confuses all FLV web players, because the
 navigation can't be accurate because of that.

 I personally always use "'''flvmeta -Uf invalid.flv'''" after this kind of
 cutting, but it would be nice if ffmpeg would actually write correct
 values in the output file

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/445>
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