[Live-devel] QTKit QTCaptureSession as a DeviceSource

[Ross Finlayson]

>Hello All,
>I having some difficulty on getting samples out of a 
>QTCaptureSession into MPEG4VideoStreamDiscreteFramer.
>
>The DeviceSource::doNextFrame is only being called every 1 to 1.5 
>seconds, the delay is not 
>in MPEG4VideoStreamDiscreteFramer::doGetNextFrame().

The duration between successive calls to "getNextFrame()" (and thus 
"doGetNextFrame()") by the downstream object depends upon the value 
of the "fDurationInMicroseconds" that you (should) set in your 
object's implementation, before calling "FramedSource::afterGetting".

>    // Deliver the data here:
>	if(fMaxSize < len){
>		fNumTruncatedBytes = len - fMaxSize;
>		len = fMaxSize;
>		printf("Frame size truncated\n");
>	}
>	fDurationInMicroseconds = dura;

What is "dura"?  Are you sure that it is the proper duration of each 
frame, in microseconds?
-- 

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