[MPlayer-dev-eng] Re: RTSP/RTP streaming

[Ross Finlayson]

>I finally got a chance to play with the RSTP/RTP integration from the LIVE
>lib. Nice work Ross.
>I have several questions that I couldn't answer from RTMF & RTMS.
>
>I Have seen that to solve firewall issue you suggested fixing the firewall to
>allow UDP packets. That's not really easily feasable in all case.

That's true, but note that if you are behind a firewall that blocks UDP, 
you are not able to fully participate in the Internet.  All voice-over-IP 
(IP telephony) uses RTP/UDP.  All Internet videoconferencing uses 
RTP/UDP.  All Internet television (and a lot of Internet radio) uses 
RTP/UDP.  So, you should *really* try to get your firewall fixed.

>To solve this issue the RFC 2326 specify in section 10.12 the
>"Embedded (interleaved) Binary Data".
>I'm was wondering if the LIVE library implement this part of the RFC?

Not yet (the code currently has the ability to send RTP packets over the 
TCP connection, but not yet receive such packets).  However, this is on my 
"to do" list, and when I've implemented this, I'll add it to the "mplayer" 
RTSP support.

(Note that this RTP-over-TCP hack will work only for RTSP-initiated RTP 
sessions, and not for the other uses of RTP that I noted above.)

>Another questions:
>How do you easily add some field in the RTSP requests?
>like adding the User-Agent and other Pragma fields?

Right now you would need to modify the RTSP client code (in the LIVE.COM 
libraries) to do this.  However, I think it would be a good idea to allow 
RTSP clients (such as "mplayer") to set the "User-Agent", so I'll try to 
add support for this soon.

         Ross.