[Live-devel] Questions about MPEG2 transport streams

[Ross Finlayson]

>I'm currently using openRTSP to receive MPEG2 transport streams.
>I'd rather have N subsessions for N streams, but I'm not responsible 
>for these servers, so I must stick with TS packets.
>
>And here are my two questions :
>
>Is it possible, in a RTSP client, to select a specific stream among 
>the others, and only receive this one ?

No (unless the server happens to explicitly support such an 
operation, which ours does not (nor does any other server that I'm 
aware of)).


>  I think it's not possible, but maybe you have some code to so in 
>liveMedia APIs ?

It would be possible, in principle, to do this with our code, by 
subclassing "RTSPServer", and writing your own server-side filter 
(sitting between the "ByteStreamFileSource" and the 
"MPEG2TransportStreamFramer") that converted the input Transport 
Stream to one that contained just the specific substream that the 
client had requested.


>Otherwise, are there some methods available, always on client' side, 
>to parse a TS packet, list its inner streams, and extract one ?

No, not in our code.
-- 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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