[FFmpeg-devel] mpegts private sections stream support

[Mark Buechler]

Hi

On Tue, Mar 11, 2008 at 7:22 PM, Mark Buechler <mark.buechler at gmail.com>
wrote:

> Hi
>
>
> On Tue, Mar 11, 2008 at 7:13 PM, M?ns Rullg?rd <mans at mansr.com> wrote:
>
> > "Mark Buechler" <mark.buechler at gmail.com> writes:
> >
> > > Hi, I'm trying to add support for reading ts streams which have a PID
> > of
> > > type 0x05 (STREAM_TYPE_PRIVATE_SECTION). I've defined a new codec id
> > of
> >
> > Out of interest, what are those private sections, and how do you
> > identify them?
> >
> > > CODEC_ID_DVB_PRIVSEC in avcodec.h and added an entry in mpegts.c for
> > > new_pes_av_stream() to set the codec_id to CODEC_ID_DVB_PRIVSEC and
> > type of
> > > CODEC_TYPE_DATA for my new stream. However, calls to av_get_frame()
> > never
> > > return packets from my stream.
> > >
> > > Is there something else I need to look at? The stream has no
> > descriptors,
> > > but I wouldn't think that would have anything to do with it.
> >
> > The TS demuxer is a mess.  I'm working on and off on a replacement
> > (haven't had a lot of time for it lately, but it's getting there).  If
> > you have any interesting samples, please upload them.  I'd be
> > especially interested in samples where a stream changes PID.
> >
> > --
> > M?ns Rullg?rd
> > mans at mansr.com
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel at mplayerhq.hu
> > https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-devel
> >
>
> The streams contain plain text and don't have any distinguishing bits,
> that I can see. I've been staring at this for a couple days and haven't
> gotten anywhere. Any help you can provide would be much appreciated.
>
> I'll send you a link to a sample separate from the list.
>
> Thanks, Mark.
>

Ok, after more investigation, it seems my stream is not a standard mpeg2 PES
stream and is hanging up in mpegts_push_data(). It is expecting a header
starting with:

00 00 01

And my stream's header is:

00 d3 b0 52 00 00 fd 00 00

So, I could create another case for that header and set the pes state to
MPEGTS_PAYLOAD, but I'm not sure that's the correct thing to do. Does anyone
recognize that header or have any suggestions on how to proceed?

Thanks, Mark.