[FFmpeg-devel] [PATCH 2/2] lavfi/WIP: port IVTC filters from vapoursynth.

Clément Bœsch ubitux at gmail.com
Wed Mar 27 17:18:24 CET 2013

On Wed, Mar 27, 2013 at 04:44:31PM +0100, James Darnley wrote:
> On 2013-03-24 07:40, Clément Bœsch wrote:
> > + * FFmpeg is free software; you can redistribute it and/or
> > + * modify it under the terms of the GNU Lesser General Public
> > + * License as published by the Free Software Foundation; either
> > + * version 2.1 of the License, or (at your option) any later version.
> While I don't know any discussions that may have happened in porting
> Avisynth -> Vapoursynth or Vapoursynth -> this, I would like to point
> out that tritical's original TIVTC plugin is GPL.  Has everyone in the
> chain I just mentioned agreed to licence this as LGPL?

That's a really good question. I had the same concern when starting
working on the port. My port is only based on the vivtc version, which is
LGPL. vivtc is meant to be a light clone, and according to the author,
there is very little similarities. I didn't look at TIVTC and trusted the
license from which this code is based on.

Note that I would be more comfortable with GPL as well. But on the other
hand, switching to GPL while vivtc is LGPL will cause some backport issues
if the vivtc author want to pick some changes from FFmpeg.

Clément B.
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