[streaming] Re: Assistance requested on multicasting

[Torben Knerr]

Siphiwe Nelwamondo wrote:

> Good day
>  
> Could somebody please help me with this problem.
>  
> 1. I am struggling to play a mpeg4 stream that I multicasted using a 
> VLC media player 0.8.1. I am sending the stream over Wifi 802.11b. I 
> can capture the packets with ethereal on the remote side but when I 
> try to start the player, it does not play the stream. I am following 
> the documented instructions and not using the command window.
>  
> On the server side, the output MRL is set as:
>  
> Destination : 
> sout:#duplicate{dst=std{access=udp,mux=ts,url=239.20.30.40:1234}}
>  
> On the players side,under Networks tab, I selected Multidiff, UDP/RTP 
> and added the address as 239.20.30.40 with port 1234.

sorry, can't help you there :(

>  
> 2. I have also streamed unicast on RTP, but when I look at the 
> captured packets, RTP does not appear under UDP, does this mean RTP is 
> not supported in Ethereal or is VLC not streaming RTP.
>  

afaik rtp is layered on top of udp, so if you use rtp, then data will be 
transported over udp.
i think it is correct that ethereal says it is a rtp package, because in 
fact it is not a plain udp package.

> 3. I have also tryed to install VLC on the Pocket PC. I downloaded the 
> executable and the plugins to the Pocket PC as instructed in one of 
> the Readme files, but when I try to run the executable, nothing 
> happens, it does not run. 
>  

maybe try another nightly build. i had the same problems when i tried to 
get it work on pocket pc.
hope there will be a stable release soon.
the latest working version i tried was 
http://vthr.via.ecp.fr/~videolan/build/wince/vlc-wince-xscale-200504080339.zip
got mpeg1/2 streaming to work with udp/rtp, did not try to stream mpeg4 
over udp/rtp. but mpeg4 over rtsp/sdp
(e.g. rtsp://server:port/foo.sdp) failed...  maybe an an issue in the 
rtsp or sdp implementation of the pocket pc client? don't know...

> Your assistance in these problems would be greatly appreciated.
>  
> Regards
> Siphiwe

good luck,
torben

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