[vlc-devel] [PATCH] TS demux: handle es stream type 0x42, which is CAVS

[Can Wu]

You are correct, Yes, the 0x42 stream_type just proposed, but not published.
The proposed document is here:
(Transport of GB 20090.2 video data over ITU-T Rec. H.222.0 | ISO/IEC
13818-1)
http://www.itu.int/md/T05-FG.IPTV-C-0511/en

So we still had the chance of assign 0x42 to avs? and I think the value
will avoid by other things.

2011/11/18 Måns Rullgård <mans at mansr.com>

> Can Wu <wu.canus at gmail.com> writes:
>
> > 2011/11/17 Måns Rullgård <mans at mansr.com>
> >
> >> Can Wu <wu.canus at gmail.com> writes:
> >>
> >> > On Thu, Nov 17, 2011 at 9:25 AM, Laurent Aimar <fenrir at elivagar.org>
> >> wrote:
> >> >
> >> >> On Wed, Nov 16, 2011 at 11:13:03PM +0800, Can Wu wrote:
> >> >> > ---
> >> >> >  modules/demux/ts.c |    3 +++
> >> >> >  1 files changed, 3 insertions(+), 0 deletions(-)
> >> >> >
> >> >> > diff --git a/modules/demux/ts.c b/modules/demux/ts.c
> >> >> > index ff3ba66..352c8a3 100644
> >> >> > --- a/modules/demux/ts.c
> >> >> > +++ b/modules/demux/ts.c
> >> >> > @@ -2405,6 +2405,9 @@ static int PIDFillFormat( ts_pid_t *pid, int
> i_stream_type )
> >> >> >      case 0x1B:  /* H264 <- check transport syntax/needed
> descriptor */
> >> >> >          es_format_Init( fmt, VIDEO_ES, VLC_CODEC_H264 );
> >> >> >          break;
> >> >> > +    case 0x42:  /* CAVS (Chinese AVS) */
> >> >> > +        es_format_Init( fmt, VIDEO_ES, VLC_CODEC_CAVS );
> >> >> > +        break;
> >> >>  Is there a registration descriptor or something equivalent to
> >> >> detect CAVS streams? if not, do you know if this stream type has
> >> >> been properly assigned by ISO?
> >> >>
> >> > Yeah, I couldn't find the define from a iso spec, I'm just got it
> >> > from the sample ts file, and some sample tools like
> >> > http://code.google.com/p/tstools, use this value.
> >> >
> >> > AVS will be the standardard video coding standard, maybe the only
> >> > one, and
> >>
> >> ????????
> >>
> > Oh, I mean in china
>
> The ISO and ITU websites are not, to my knowledge, blocked by the Great
> Firewall of China.
>
> >> > it's also a ISO standard in ITU,
> >>
> >> AVS is not an ISO or ITU standard.
> >>
> > it's ITU standard, not?
>
> No.
>
> >> > I think this stream_type value should not be random used.
> >>
> >> The latest edition of the MPEG-TS spec (2006-05 + amendments) lists 0x42
> >> as "reserved".  There is (predictably) no mention of AVS or any other
> >> non-ISO standard.
> >>
> > need more source to check...
>
> I checked the spec before writing this.
>
> --
> Måns Rullgård
> mans at mansr.com
>
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-- 
wucan
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