Hello Jerry. If the I-frame requires 700 ms to be transmitted, then it is totally expected that the rendered video freezes during 700 ms when it is about to display the I-frame.
You may modify the jitter buffer settings (from configuration file) to create more latency and then masq the I-frame delay: [rtp] video_jitt_comp = 700 ms Regards, Peio Rigaux Junior Software Engineer Belledonne Communications, the company behind Linphone Linphone.org <https://linphone.org/> Le 30/09/2020 à 17:53, Jerry Jongerius a écrit : > > I have a video producer behind a slow’ish uplink, which results in the > I-Frame being transmitted over 700ms+ (GOP is 2s). The front end is > an Android device running Linphone. > > > > What I see is the video ‘freezing’ for a very brief period of time > every 2s (which matches the GOP time frame). If the video producer is > moved to a faster link (so I-Frame is sent faster, say 500ms), the > ‘freezes’ go away. If the video producer is moved to an even slower > link (so I-Frame is sent over 1500ms), the ‘freezes’ remain the same. > > > > Packet captures show the android device is receiving all packets (so > assuming Linphone is receiving all frames). > > > > Why is video ‘freezing’ (very briefly) every 2s, and are there any > settings to tweak to fix this? > > > > > > > > > _______________________________________________ > Linphone-users mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/linphone-users
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