ah ok, so rtsp stream is not possible in a linphone client for example?
but what about an preview still image? that should be supported right? also in sip clients?
then i have at least something in an early view, the video will come afterwards
Do you have some example code how i can add an still image / icon in a sip header? based on this :
[from-internal-custom]
exten => 2002,1,Progress()
same => n,Dial(SIP/2002)
same => n,Hangup