[Ffmpeg-devel] FFMpeg mpeg demuxer misses detection of dts track

[Måns Rullgård]

"Joakim Plate" <joakim.plate at ecce.se> writes:

> Noticed an miss in the codec_id detection of the mpeg demuxer. Atleast when
> decoding mpeg's muxed for dvd, not entirely sure about other types. Found a
> dvd that had an DTS track that wasn't being detected as DTS. Turned out it
> had a id of 137. (physicalid 1 as libdvdnav returns). FFMpeg doesn't think a
> track is dts untill id 138 as it is now. (before the pes header parsing was
> added, still should do it correctly without i think)
>
> I'm not entirly sure i'm correct in assuming this, but asfar as i've been
> able to figure out (xine and mplayer source + web), the last 3 bits of the
> id of wich the mpegstream was muxed with, defines the physicalid of the
> stream, the other bits define the type. That would mean that we should start
> to count from 136 as first dts track. Also makes sence as dvd specs tells
> that a dvd can only contain 8 audio tracks.

This is correct, patch applied.  Thanks.

-- 
M?ns Rullg?rd
mru at inprovide.com