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<p class="MsoNormal"><span lang="EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> I’m trying to implement a unicast ondemand streaming from a live source.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The live source comes from the Nvidia encoder NVEnc:
<a href="http://docs.nvidia.com/cuda/samples/3_Imaging/cudaEncode/doc/nvcuvenc.pdf">
http://docs.nvidia.com/cuda/samples/3_Imaging/cudaEncode/doc/nvcuvenc.pdf</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This encoder produces NAL units ready to send over the network.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have a lot of problems with artifacts. I have tried two ways of sending the packages.
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:40.5pt;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span lang="EN-US" style="font-family:Wingdings"><span style="mso-list:Ignore">è<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><b><span lang="EN-US">A Stream Ring buffer:</span></b><span lang="EN-US"> With this approach I’m sending as much bytes as possible. Means. Min(availableBytesInBuffer,fMaxSize) bytes<b><o:p></o:p></b></span></p>
<p class="MsoListParagraph" style="margin-left:40.5pt;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span lang="EN-US" style="font-family:Wingdings"><span style="mso-list:Ignore">è<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><b><span lang="EN-US">A queue where I hold the NAL packets and its size:
</span></b><span lang="EN-US">With this approach I tried to send the entire NAL. Means Min(nal.size,fMaxSize) bytes<b><o:p></o:p></b></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">With the first approach I can see in the log that I’m getting many errors regarding the SPS PPS incorrect. also when I display the stream in the video player I see artifacts and blinkings<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">With the second approach I also see artifacts and blinkings and the main problem is that there are many NAL units that are bigger than fMaxSize. Thus, those frames are truncated. I do not know<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">How to ensure that fMaxSize is always bigger that fFrameSize.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I tried to set up in the Streamer code enough size in the OutputPacketBuffer but this does not seem to work....<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> {<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> OutPacketBuffer::maxSize=10000000;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">
<span style="color:blue">char</span> <span style="color:blue">const</span>* streamName =
<span style="color:#A31515">"testStream"</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> ServerMediaSession* sms<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> = ServerMediaSession::createNew(*env, streamName, streamName,<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> descriptionString);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> sms->addSubsession(H264LiveServerMediaSubsession<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> ::createNew(*env,h264LiveBuffer, reuseFirstSource));<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> rtspServer->addServerMediaSession(sms);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> announceStream(rtspServer, sms, streamName, inputFileName);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">
</span><span style="font-size:9.5pt;font-family:Consolas">}<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">At, this point I wonder... first<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">Is it possible to stream the NAL units coming from the NVidia with the live555?<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">If so,, any suggestion how can I try to solve this? I’m literally stuck at this point.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">Thank you<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">Best<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">Pablo<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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