[vlc-devel] [PATCH]RTSP Trickplay in 0.8.6c

Ross Finlayson finlayson at live555.com
Fri Nov 23 01:00:36 CET 2007

>  From my reading of the RFC2326 document, there is no way to know if the
>server supports the Scale feature as it's an optional feature in the RFC
>spec. Ross might be able to comment on if I'm mistaken here.

I believe that's correct.

I think the only (reliable) way to determine whether or not a server 
supports "scale" is to look at the value that the server returns in 
response to a "PLAY".  As I noted earlier:

>  Note that the LIVE555 libraries already do this.  After you've called
>  "playMediaSession()" (or "playMediaSubsession()") with the desired
>  "scale" parameter, simply call "session.scale()" (or
>  "subsession.scale()") to get the actual scale factor that the server
>  chose to support.

Ross Finlayson
Live Networks, Inc.

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