[FFmpeg-devel] Support master branch of OpenJPEG and Grok J2K codecs

Aaron Boxer boxerab at gmail.com
Mon Apr 4 14:01:35 CEST 2016

On Mon, Apr 4, 2016 at 5:37 AM, Michael Niedermayer <michael at niedermayer.cc>

> On Sun, Apr 03, 2016 at 05:31:25PM -0400, Aaron Boxer wrote:
> > Hi Folks,
> >
> > Here is a small patch to get FFmpeg working with both OpenJPEG master and
> > Grok master, for J2K support.  The comment on the commit has all of the
> > details; the main change is to remove the OPJ_STATIC flag from configure,
> > so that FFmpeg can be configured with a dynamic build of both codecs.
> >
> > I also want to reiterate that because FFmpeg can be distributed under GPL
> > v3, and Grok is licensed under the AGPL, there are no licensing issues
> > regarding distributing FFmpeg together with Grok.
> FFmpeg support a wide varity of network protools, from low level
> tcp&udp to higher level http, ftp, rtp, rtsp, rtmp, mms, ...
> the AGPL requires "if you modify the Program, your modified version must
> prominently offer all users interacting with it remotely through a computer
> network (if your version supports such interaction) an opportunity to
> receive the Corresponding Source of your version by providing access to the
> Corresponding Source from a network server at no charge, through some
> standard or customary means of facilitating copying of software."
> yet you here suggest to link AGPL software to GPL where the GPL sw
> will not offer any source though any of its quite numerous network
> interfaces
> Iam no lawyer so i dont know if you can do that or not but
> either the combination needs to offer source code through its network
> protocols or you just suggested to circumvent your own licenses main
> point
The GPL v3 code would continue to be bound by GPL v3,(no need to distribute
source if connected over network) and the AGPL
code would continue to be bound by AGPL (must distribute source if
connected over network)

I will try to get clarification from FSF.


> >
> > Quoting from Wikipedia:
> quoting Wikipedia as well
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> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
> No great genius has ever existed without some touch of madness. --
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