[Live-devel] Re: [vlc-devel] RTSP trickplay support

[Matthew Romaine]

Hi Ross,

Changing the scale by calling ::playMedia[Sub]Session() seems to work 
but subsequent calls to confirm the change via 
Media[Sub]Session::scale() continue to return 1.0; I poked around and 
can't find where it's being updated.  I'm doing it through the VLC 
livedotcom.cpp wrapper, and I've confirmed the "OK" response, and from 
what I can tell the packets are being sent as expected.  Where is 
fScale being reset by the respective *AudioFileServerMedia[Sub]Session?

Thanks,
Matt


On 2004/12/07, at 19:29, Ross Finlayson wrote:

> To expand upon Matthew Romaine's earlier message:
>
> The latest version[*] (2004.12.07) of the "LIVE.COM Streaming Media" 
> code (used by VLC to implement a RTSP/RTP client) includes full RTSP 
> client support for 'trickplay'.  It does this using the following 
> member functions:
> 	- "RTSPClient::playMediaSession()" and 
> "RTSPClient::playMediaSubsession()" - which implements the RTSP "PLAY" 
> command - includes parameters "start" and "end" for specifying which 
> parts of the stream to play, and a parameter "scale" for specifying 
> the speed (forward or reverse) at which you'd like the stream to be 
> played.
> 	- If you specify a "scale" parameter other than 1.0 (the default) in 
> "RTSPClient::playMediaSession()" or 
> "RTSPClient::playMediaSubsession()", you should afterwards call 
> "MediaSession::scale()" or "MediaSubsession::scale()" (respectively), 
> to find out the actual scale factor that the server has chosen to 
> implement for this stream.  You can then use this in the GUI.
>
> [*] There is now a constant URL that points to the latest version of 
> the "LIVE.COM Streaming Media" code: 
> <http://www.live.com/liveMedia/public/live-latest.tar.gz>
>
> 	Ross Finlayson
> 	LIVE.COM
> 	<http://www.live.com/>
>