Possible to 'prime' pipeline with frame size/etc?

[Michael Tyson]

That’s great news! Thanks, Chuck.

It’s pretty much one-sender-one-receiver, although I’d like to keep the option of one-sender-multiple-receivers open. It’s entirely local-network, with prearranged multicast address, port and protocol. 

I’d imagine at launch priming the rx pipeline with the frame size/rate it expects to receive from the other end, which will hopefully facilitate showing some kind of display until the actual video arrives. Just to consider a simple case, where these are hard-coded, are you able to point me at the appropriate API bits to accomplish that?

Cheers!

On 11 Mar 2014, at 12:48 am, Chuck Crisler <ccrisler at mutualink.net> wrote:

> Sure. You use out of band signaling, something like SIP or RTSP. It really depends on your application - what you are trying to do, single system to many? One to one? Endpoints registered to a server? How do you know the addresses and ports and protocols? The sender could include the sprop_parameters in that communication.
> 
> 
> On Mon, Mar 10, 2014 at 5:49 AM, Michael Tyson <michael at tyson.id.au> wrote:
> Hello!
> 
> I’m putting together a realtime video monitoring application with a cairo overlay, in C.
> 
> Until the first RTP video packets arrive, there’s no visual - the pipeline’s got no video format information, so it’s waiting to receive the first frames.
> 
> I’d ideally like to display a blank screen, but primed with the expected screen resolution, ideally with something like a “waiting for video” caption. Is something like this at all possible with GStreamer?
> 
> Cheers,
> Michael
> 
> 
> 
> 
> 
> 
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