Ok, I have just re-sent it to developers. Thank you, Petr Machacek
-----Original Message----- From: Linphone-users <linphone-users-bounces+machacek=2n...@nongnu.org> On Behalf Of David Emanuel da Costa Santiago Sent: Thursday, November 4, 2021 4:32 PM To: linphone-users@nongnu.org Subject: NEWSLETTER Re: [Linphone-users] BUGS: H.264 stream probably invalid + crash Hello Petr, I believe this would be better discussed in the developers mailing list: linphone-develop...@nongnu.org Best regards, David Santiago Às 10:10 de 04/11/21, Petr Macháček - 2N escreveu: > Hello Linphone developers, > > I'm testing some piece of my software with Linphone. When I make a > call from Linphone to my software, the video from Linphone has bad > quality, it contains artifacts that are typical for H.264. Using > WireShark, I saved the stream from Linphone to pcap format and > extracted the H264 stream from that. I then analyzed this stream with > the H.264 Stream Analysis program > (https://sourceforge.net/projects/h264streamanalysis/ > <https://sourceforge.net/projects/h264streamanalysis/>). > > This program shows that the H264 stream from Linphone is very strange. > It contains several I-frames at the beginning followed by a long > series of P-frames. Normally it is typical for I-frames to be many > times larger than P-frames, but from Linphone both I-frames and > P-frames are similarly large (~1kB). > > I note that Linphone is the only software that my program has a > problem with. I've tested it with a number of other devices (e.g. > GrandStream GXV3275, various IP cameras...) and I haven't had a > problem with H.264 video anywhere. > > I am attaching a screenshot of the H.264 Stream Analysis program with > the stream from the Linphone (linphone.png) and another screenshot > with the stream from the IP camera where the stream is not corrupted > (good_h264.png). > > I am also sending a link to a zip file that contains both a pcap dump > from Wireshark that contains the Linphone stream and the extracted > h264 stream from Linphone: > > https://drive.google.com/file/d/12Mw95AtQonDwy-6-cq0Q05HN4YwmxJR3/view > ?usp=sharing > <https://drive.google.com/file/d/12Mw95AtQonDwy-6-cq0Q05HN4YwmxJR3/vie > w?usp=sharing> > > Another problem a Linphone crash: > > When I call from Linphone to GrandStream GXV3275, Linphone asks > whether I want to turn on video. I click Confirm and the Linphone crashes. > > Linphone: Desktop 4.3.0, Core 5.0.39. > > OS: Windows 10 Pro (21H1, build 19043.1288) > > PC: Notebook Dell Latitude 5491 > > Best regards > > Petr Machacek > > > _______________________________________________ > Linphone-users mailing list > Linphone-users@nongnu.org > https://lists.nongnu.org/mailman/listinfo/linphone-users > _______________________________________________ Linphone-users mailing list Linphone-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/linphone-users _______________________________________________ Linphone-users mailing list Linphone-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/linphone-users