[pulseaudio-discuss] Listening to the RTP stream

Lennart Poettering lennart at poettering.net
Mon Sep 3 10:11:47 PDT 2007

On Mon, 03.09.07 13:49, Jan-Benedict Glaw (jbglaw at lug-owl.de) wrote:

> Hi!
> I played with the RTP sending module a bit. Seems to work, at least
> there's a RTP stream coming out of the box :)
> However, are there alternative ways to listen to this/these streams
> except using the receiver module? Eg. in theory, mplayer should be
> able to listen to this stream, but it seems to have problems
> recognizing the contents. How do I actually tell it to use a specific
> PCM format?

Hmm. Good question. This used to work out of the box. We use the
standard type descriptors for S16BE uncompressed audio. Nothing
special, very basic stuff. 

According to the output you pasted mplayer ignores the RTP data type
codes now and instead tries to recognize the data time with
"magic". Which is a bad idea I would say. It should simply trust the
type descriptor we use in those packets.

Could you please ping the mplayer people about this? Seems to be a
parsing issue on their side.

Another client for RTP that works fine is "dumprtp" from the dvbstream
package. And I heard some people had success with VLC. 


Lennart Poettering                        Red Hat, Inc.
lennart [at] poettering [dot] net         ICQ# 11060553
http://0pointer.net/lennart/           GnuPG 0x1A015CC4

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