[FFmpeg-trac] #1924(avformat:new): ASS subtitles are demuxed inconsistently

FFmpeg trac at avcodec.org
Fri Nov 16 23:01:27 CET 2012

#1924: ASS subtitles are demuxed inconsistently
             Reporter:  gjdfgh       |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  normal       |                Component:  avformat
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |

Comment (by gjdfgh):

 OK, found out that libass provides a separate function ass_process_data(),
 which can takes "complete" ASS events as libavformat outputs them. While
 it's a bit annoying that you can't get the length of the subtitle event in
 the AVPacket duration/convergence_duration fields, these are not really
 needed when using libass (or if you need them, use the libavcodec ass

 You actually can't get the Matroska ReadOrder field, which is used yb
 libass for something. I don't know if this is a bug or a caveat, or if
 it's actually handled in some way.

 Can't close this myself as invalid. Sorry for the noise.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1924#comment:2>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker

More information about the FFmpeg-trac mailing list