[FFmpeg-trac] #6304(undetermined:new): Unable to parse some subtitles with a system ffmpeg compiled HandBrake

FFmpeg trac at avcodec.org
Wed Apr 12 23:33:23 EEST 2017


#6304: Unable to parse some subtitles with a system ffmpeg compiled HandBrake
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             Reporter:  slaanesh     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  minor        |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by cehoyos):

 Replying to [ticket:6304 slaanesh]:
 > Summary of the bug: Different behaviours with subtitles in HandBrake
 compiled with libav vs ffmpeg.

 avconv contains several hundred known bugs that are not present in FFmpeg,
 some of them subtitle-related. Handbrake contains work-arounds for many of
 those bugs (the Handbrake developers know of these bugs but prefer to use
 avconv, they are currently very active in fixing some of the bugs in
 avconv). I suspect you have to remove some of the work-arounds to make
 subtitle handling work correctly.

 > {{{
 > [10:51:05] add_ffmpeg_subtitle: unknown subtitle stream type: 0x17808
 > }}}
 For this issue, I suspect you have to map AV_CODEC_ID_SUBRIP against
 Handbrake's internal subtitle codec.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6304#comment:1>
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