[gst-devel] Example of sending vorbis audio and theora video through RTP without RTSP

[Marco Ballesio]

On Fri, May 21, 2010 at 6:21 PM, Miguel Telleria de Esteban
<miguel at mtelleria.com> wrote:
>
> NOTE:  This happens with some other formats as well such has H.264
>       according to what I was informed in the IRC channel.

These information can usually be carried over a standard RTP stream,
it is the (in)famous distinction made between in-band and out-band
so-called "codec-data" in GStreamer that makes the things a little
messy.

For x264enc you should overcome this by using byte-stream=true but,
basically, if the encoder does not support the distinction you must
hack it or rely on a signalling/control protocol to get your
application working.

Regards

>
> The information is the "configuration" GstStructure which consists in a
> long base64 blob.  This information is typically sent via a previous
> server protocol such RTSP.
>
> However I stubbornly decided not to use any RTSP or HTTP server at all.
>
> The solution I came up with is dumping the information to a file that
> could be copied by other means to the client.  So in order to use my
> demo program you need to:
>
> 1.  Start the sender in order to obtain the audio_caps and video_caps
>    file.
>
> 2.  Pass the audio_cpas and video_caps by other means (e.g. SSH).
>
> 3.  Start the client providing the audio_caps and video_caps files.
>
> Since all I wanted to do was a proof of concept this solution satisfied
> me for my needs.
>
> I hope this will help other Gstreamer beginners and of course I am open
> to suggestions on how to make the same task in a more easy way.
>
> Regards,
>
>        Miguel Telleria
>
>
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>
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