Hello Ross, Hope you are well. The Live video playing method you described below is working well for most h.264 stream formats. The Low Latency stream format supported by the AMD APU's DEM does do not work properly in my implementation (it half works at a slow or dropped rate). It does however work with the live555MediaServer.exe!
Can I call on your experience to spot something in the intra refresh h.264 stream (http://culinarykits.co.uk/rich/error.264) that most other h264 streams do not require (http://culinarykits.co.uk/rich/noerror.264)? You may be able to spot the issue looking at the image at the following URL describing the stream nal type differences: http://culinarykits.co.uk/rich/h264_breakout.png Am I missing a variable setting? I am parsing the stream correctly into each nal type and filling what up till now are the correct variables in my framedsource getnextframe. Thanks in advance, Rich. From: live-devel [mailto:live-devel-boun...@ns.live555.com] On Behalf Of Richard Lince Sent: 28 October 2014 17:35 To: LIVE555 Streaming Media - development & use Subject: Re: [Live-devel] H264or5VideoStreamParser::parse() from a FramedSource Thanks Ross, that has worked well. Richard. From: live-devel [mailto:live-devel-boun...@ns.live555.com] On Behalf Of Ross Finlayson Sent: 24 October 2014 18:36 To: LIVE555 Streaming Media - development & use Subject: Re: [Live-devel] H264or5VideoStreamParser::parse() from a FramedSource After creating my own class's • class myRTSPSinkOndemandMediaSubsession : public OnDemandServerMediaSubsession • class myFrameSource : public FramedSource If your “myFrameSource” class delivers discrete H.264 NAL units (i.e., one at a time), rather than an unstructured byte stream, then you MUST feed this into a “H264VideoStreamDiscreteFramer”, NOT a “H264VideoStreamFramer”. In particular, your “myRTSPSinkOndemandMediaSubsession” class’s implementation of the "createNewStreamSource()” virtual function should look something like this: ////////// FramedSource* myRTSPSinkOndemandMediaSubsession::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) { estBitrate = 500; // in kbps; set this to an appropriate estimate of your stream’s bitrate // Create the video source: FramedSource* videoSource = myFrameSource::createNew(envir(), params); // Create a framer for the video stream: return H264VideoStreamDiscreteFramer::createNew(envir(), videoSource); } ////////// Note also that - because you’re feeding into a “H264VideoStreamDiscreteFramer” - each H.264 NAL unit delivered by your “myFrameSource” object MUST NOT begin with a ‘start code’ (0x00 0x00 0x00 0x01). Also, if your encoder doesn’t automatically do so, then you should arrange for the first two NAL units delivered by your “myFrameSource” object to be a SPS and a PPS NAL unit. (Alternatively, in your implementation of the “createNewRTPSink()” virtual function, you can use one of the forms of “H264VideoRTPSink::createNew()” that takes SPS and PPS NAL unit information as parameters.) Ross Finlayson Live Networks, Inc. http://www.live555.com/ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________
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