[FFmpeg-devel] [RFC] TS/DVB subtitle sub_id hack

Baptiste Coudurier baptiste.coudurier
Mon Jul 12 08:13:36 CEST 2010


On 7/11/10 7:22 AM, Reimar D?ffinger wrote:
> Hello,
> currently the DVB subtitle handling is a mess that's basically not going
> to work for anyone not using ffmpeg or ffplay binaries, and even violates
> the documentation.
> First, the documentation of the AVCodecContext:sub_id field that is mostly involved
> here:
>       * - decoding: Set by libavcodec. (FIXME: Is this OK?)
>       */
>      int sub_id;
>

I think you missed the part above:
  * Some codecs need additional format info. It is stored here.
  * If any muxer uses this then ALL demuxers/parsers AND encoders for the
  * specific codec MUST set it correctly otherwise stream copy breaks.

It clearly says that demuxers can set this field IMHO.

-- 
Baptiste COUDURIER
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