[gst-devel] QT Demux with strange ouput ES data

[Daniel James Laird]

How do I get this codec_info header from a downstream component (i.e how can my sink get this info)?  

I have tried searching for it in the code (an manual) and have failed horribly.  I suspect that I am doing something rather stupid but I cannot find an example usage at all.

Hope you can help
Dan

-----Original Message-----
From: Michael Smith [mailto:msmith at xiph.org] 
Sent: 2009 Feb 10 16:50
To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] QT Demux with strange ouput ES data

On Tue, Feb 10, 2009 at 2:58 AM, Daniel James Laird
<daniel.j.laird at nxp.com> wrote:
> Hi,
>
> I am trying to use the qtdemux to demux a ".mov" file that I have. I am using the qtdemux and then I put the output into my onboard decoder.  However it is failing to find start codes in the data.
> I checked by running qtdemux on my PC (FC10) by running the following:
> gst-launch filesrc location=term.mov ! qtdemux name=demux  demux.audio_00 ! queue ! fakesink   demux.video_00 ! queue ! filesink location=gstreamer.h264
>

qtdemux doesn't output an H.264 elementary stream, which is where
you're having problems.

Additional headers needed to initialise your decoder will be in the
"codec_info" attribute in the caps. Depending on how your decoder is
structured, perhaps you can supply this directly, or perhaps you need
to rewrite the stream using that data to be a raw elementary stream.

Mike

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