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[Linphone-developers] VP8 Codec in Linphone

From: 王聡
Subject: [Linphone-developers] VP8 Codec in Linphone
Date: Tue, 5 Dec 2017 19:35:41 +0900

Hey all,

Recently I want to record video calls on my FreeSWITCH server, and my client was built based on Linphone Core. Once I started recording on FS server, the video disappeared and only black screen remained.
Further research on FS server shows an unsupported stream received from client, which likes:

[ALERT] switch_vpx.c:1240 Error decoding 1579 bytes, [5:Bitstream not supported by this decoder:(null)]

It seems like the key frame missing or unsupported keyframe sent.
The H264 video call can be recorded correctly. I had tested Bria Softphone and got an available recording, so I think it would be something wrong on Linphone’s VPX codec, but I can’t find related codes.
Anyone had any idea?


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