[FFmpeg-trac] #8825(undetermined:new): Corrupt timestamps on WebVTT subtitles

FFmpeg trac at avcodec.org
Tue Jul 28 14:17:15 EEST 2020

#8825: Corrupt timestamps on WebVTT subtitles
             Reporter:  paralucent   |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 == Summary of the bug:==

 When processing WebVTT subtitles FFMPEG skips the X-TIMESTAMP-MAP data
 resulting in a temporally corrupt subtitle output file in which every
 caption starts at 0:00:00.000.

 == How to reproduce: ==
 ffmpeg  -i "https://sdn-global-streaming-cache-
 -HWQKVTXrYyxwncZq-textstream_eng=1000.m3u8?mime=mp4&source=html5" subs.srt

Ticket URL: <https://trac.ffmpeg.org/ticket/8825>
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