4k streaming to webrtc
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Hey everyone!
I'm developing an app that's supposed to stream a video coming from a pipeline to several browser clients. This works perfectly fine for 720p and 1080p but when upgrading to 4k I start to see some freezing in the video played by clients. The host for this project is an Nvidia TX2 and profiling the main program doesn't seem to show any bottlenecks (gpu, cpu and memory usage are all low and watching the stream before launching doesn't look nearly as bad as at clients), so the bottleneck seems to be somewhere in webrtc. The pipeline used by webrtc is the following in case it helps: udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5000 ! queue max-size-bytes=0 ! application/x-rtp,media=video,clock-rate=90000,encoding-name=VP8,payload=96, framerate=25/1 ! webrtcbin name=sendrecv latency=0 I've tried to find the reason using Firefox about:webrtc tool (We haven't managed to make webrtc work with chrome yet) and FPS, packet loss and bitrate all seem normal: Source is 25fps +-4Mbps and we receive 22 FPS and +-4Mbps (on average). However, sometimes fps drop a lot and quality overall seems to be lower than before streaming. Client pc has higher cpu and gpu consumption thatn the jetson host but it's only around 80% for both. Is there any way I could debug further to find performance or something that could help improving webrtc performance? Thank you for your attention! -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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Stupid question. Why does Chrome not work? I don’t use Firefox, but I use its webRtC-internals facility to check jitter / nacks etc. Do you have a nack count?
Sent from my iPhone > On Jul 31, 2020, at 5:03 AM, kaladin <[hidden email]> wrote: > > Hey everyone! > > I'm developing an app that's supposed to stream a video coming from a > pipeline to several browser clients. This works perfectly fine for 720p and > 1080p but when upgrading to 4k I start to see some freezing in the video > played by clients. > > The host for this project is an Nvidia TX2 and profiling the main program > doesn't seem to show any bottlenecks (gpu, cpu and memory usage are all low > and watching the stream before launching doesn't look nearly as bad as at > clients), so the bottleneck seems to be somewhere in webrtc. The pipeline > used by webrtc is the following in case it helps: > > udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5000 ! queue > max-size-bytes=0 ! > application/x-rtp,media=video,clock-rate=90000,encoding-name=VP8,payload=96, > framerate=25/1 ! webrtcbin name=sendrecv latency=0 > > I've tried to find the reason using Firefox about:webrtc tool (We haven't > managed to make webrtc work with chrome yet) and FPS, packet loss and > bitrate all seem normal: Source is 25fps +-4Mbps and we receive 22 FPS and > +-4Mbps (on average). However, sometimes fps drop a lot and quality overall > seems to be lower than before streaming. Client pc has higher cpu and gpu > consumption thatn the jetson host but it's only around 80% for both. > > Is there any way I could debug further to find performance or something that > could help improving webrtc performance? > > Thank you for your attention! > > > > -- > Sent from: http://gstreamer-devel.966125.n4.nabble.com/ > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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We're not really sure. It does reply with an answer and ice candidates, one
gets selected but no stream is displayed, we haven't really debugged it much since firefox works and it read online that chrome sometimes has problems like that with webrtc and firefox is better. If chrome webrtc-internals is that much better compared to firefox we could take the time to debug chrome and find the reason behind the errors, since this is being a big bottleneck and we can't find the source -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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In reply to this post by kaladin
kaladin wrote
> Hey everyone! > > I'm developing an app that's supposed to stream a video coming from a > pipeline to several browser clients. This works perfectly fine for 720p > and > 1080p but when upgrading to 4k I start to see some freezing in the video > played by clients. > > The host for this project is an Nvidia TX2 and profiling the main program > doesn't seem to show any bottlenecks (gpu, cpu and memory usage are all > low > and watching the stream before launching doesn't look nearly as bad as at > clients), so the bottleneck seems to be somewhere in webrtc. The pipeline > used by webrtc is the following in case it helps: > > udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5000 ! queue > max-size-bytes=0 ! > application/x-rtp,media=video,clock-rate=90000,encoding-name=VP8,payload=96, > framerate=25/1 ! webrtcbin name=sendrecv latency=0 > > I've tried to find the reason using Firefox about:webrtc tool (We haven't > managed to make webrtc work with chrome yet) and FPS, packet loss and > bitrate all seem normal: Source is 25fps +-4Mbps and we receive 22 FPS > and > +-4Mbps (on average). However, sometimes fps drop a lot and quality > overall > seems to be lower than before streaming. Client pc has higher cpu and gpu > consumption thatn the jetson host but it's only around 80% for both. > > Is there any way I could debug further to find performance or something > that > could help improving webrtc performance? > > Thank you for your attention! > > > > -- > Sent from: http://gstreamer-devel.966125.n4.nabble.com/ > _______________________________________________ > gstreamer-devel mailing list > gstreamer-devel@.freedesktop > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel For 4K, you need to support at least 20-25mbps. Is that the case? Otherwise you aren't dealing with a 4K stream. -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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