[FFmpeg-devel] Support TrueHD for MPEG Transport Stream format

[Michael Niedermayer]

On Tue, Oct 22, 2013 at 12:16:11AM +0800, 刘 岐 wrote:
> 
> 在 2013-10-22，上午12:00，Carl Eugen Hoyos <cehoyos at ag.or.at> 写道：
> 
> > 刘 岐 <lingjiujianke <at> gmail.com> writes:
> > 
> >> --- a/libavformat/mpeg.h
> >> +++ b/libavformat/mpeg.h
> > 
> >> #define STREAM_TYPE_VIDEO_CAVS      0x42
> >> 
> >> #define STREAM_TYPE_AUDIO_AC3       0x81
> >> +#define STREAM_TYPE_AUDIO_TRUEHD    0x83
> > 
> > How is this related?
> > 
> >> --- a/libavformat/mpegts.c
> >> +++ b/libavformat/mpegts.c
> > 
> >> /* ATSC ? */
> >> static const StreamType MISC_types[] = {
> >>     { 0x81, AVMEDIA_TYPE_AUDIO,   AV_CODEC_ID_AC3 },
> >> +    { 0x83, AVMEDIA_TYPE_AUDIO,   AV_CODEC_ID_TRUEHD },
> > 
> > Do you have a sample that needs this part of the 
> > patch to be decoded?
> > 
> http://ffmpeg.org/pipermail/ffmpeg-user/2013-October/017956.html
> test sample is here :
> http://blog.fs-linux.org/truehd.m2ts
> http://blog.fs-linux.org/truehd2.m2ts
> 
> use command ffmpeg -i ~/Downloads/truehd.m2ts -vn -acodec copy -map 0:0 -map 0:1 -map 0:2 -map 0:3 -map 0:4 -map 0:5 -map 0:6 -map 0:7 -map 0:8 out.m2ts
> and to see the out.m2ts

./ffmpeg -i truehd.m2ts -vn -acodec copy -map 0:0 -map 0:1 -map 0:2 -map 0:3 -map 0:4 -map 0:5 -map 0:6 -map 0:7 -map 0:8 ref.m2ts
apply libavformat/mpegts.c hunk
make
./ffmpeg -i truehd.m2ts -vn -acodec copy -map 0:0 -map 0:1 -map 0:2 -map 0:3 -map 0:4 -map 0:5 -map 0:6 -map 0:7 -map 0:8 out.m2ts
md5sum out.m2ts ref.m2ts
de1ce1ec6f9ffce777ba175173c0577f  out.m2ts
de1ce1ec6f9ffce777ba175173c0577f  ref.m2ts

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Frequently ignored answer#1 FFmpeg bugs should be sent to our bugtracker. User
questions about the command line tools should be sent to the ffmpeg-user ML.
And questions about how to use libav* should be sent to the libav-user ML.
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