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Re: [Linphone-developers] linphone-desktop package and OpenH264 codec

From: Bernhard Schmidt
Subject: Re: [Linphone-developers] linphone-desktop package and OpenH264 codec
Date: Sat, 2 Jan 2021 14:08:12 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0

Am 29.12.20 um 15:56 schrieb Greg Troxel:


But yes, thinking about it again I think the best option would be to
disable this downloading thing. If I understand
linphone-app/src/components/codecs/VideoCodecsModel.cpp correctly it is
downloading from a http-location without any verification.

Hoping for msx264...

I am not the least bit sure I understand, but it seems the biggest
problem is that the H.264 codec has serious patent issues, and there is
some notion that if you run the binary from Cisco you are covered by
their license.

So it may be that H.264 is fundamentally incompataible with Free
Software.  Having source, and a binary, and being able to distribute the
source, and distribute and use the binary, but not being able to use a
binary compiled from the source is a fail.

Indeed, but somehow x264 seems to work around both source code license (probably being a clean-room implementation) and the royalities. It has been in Debian main for years.

So getting msx264 into a usable shape would be the easiest way for Debian.

It's great that linphone has VP8, as that appears to be Free compatible.

True, but most hardphones don't support it. Our yealink desktop phones actually do (not tested yet), but the 2N door station only supports H264.


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