[MPlayer-dev-eng] Relicensing MPlayer or parts of it to LGPL

wm4 nfxjfg at googlemail.com
Sun Sep 25 15:09:52 EEST 2016

On Mon, 28 Dec 2015 18:52:43 +0000 (UTC)
Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> wm4 <nfxjfg <at> googlemail.com> writes:
> > To avoid this, I'm thinking of relicensing mpv to LGPL 2.1  
> Complete unrelated to the fact that at least one of the 
> original copyright holders was strongly against such a 
> relicensing:
> Please don't, you cannot ask all authors, we even failed 
> for a single file in FFmpeg.

I'm not sure why you're saying that. It's actually not unusual for
MPlayer code to be relicensed and even moved out to other projects.
This includes:
- libswscale (now LGPL and part of FFmpeg)
- libass (now a separate project under a MIT-like license)
- vf_yadif.c (specifically relicensed to LGPL in FFmpeg because there
  was such a high interest in this filter within FFmpeg)
- all vo_gl.c/OpenGL code was relicensed to dual-licensed GPL + LGPL

I'm merely extending this to the core, and a few sub-components (mostly
some audio/video decoders/outputs/filters, demuxers, stream handlers). I
don't need absolutely everything, as many parts have become unimportant
in mpv. (For example, almost all decoders have been removed in mpv,
because FFmpeg is good enough.)

So can I get permission to relicense your MPlayer contributions to LGPL,
or can I get at least a definitive "no"?

Anyway, I'm continuing my relicensing attempt. I'll post status updates


(This issue is mostly used for relicensing of mpv contributions, but
could serve for general discussion etc. as well.)

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