[streaming] Re: DVB channel multicasted using RTSP

[Benjamin Pracht]

Le jeudi 10 novembre 2005 à 07:08 +1100, Matthew Geier a écrit :
> Honorius Galmeanu wrote:
> > Hello,
> > 
> > I would like to transmit a DVB channel through RTSP multicast. All I 
> > succeded was
> > to transmit the DVB channer unicast with RTSP (using rtp module), or to 
> > transmit the DVB channel using RTP multicast (but with std module).
> > Is there a way to transmit RTSP using rtp module, multicast ? Also, is 
> > it possible to select between channels (using RTSP) ?
> 
>   Some one correct me if i'm wrong - but multicast and RTSP doesn't make 
> sense to me. RTSP is a control protocol - if you are multicasting you 
> have multiple listeners - do you really want multiple listeners to all 
> be able to change the source ?.
> 

Well, you're right here, using rtsp as a control channel wouldn't make
sense. However, we can use rtsp only a a way to retreive the sdp file
describing the session.

A way to do this with VLC is to use 

rtp{dst=<multicast_group>,port=<dest_port>,sdp=<address_and_path_to_sdp>}

>   Changing channel is sort of easy - you multicast em all, and the user 
> changes multicast groups to change channels. Especially easy if all the 
> interesting channels are on the same multiplex.

-- 
BigBen

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