Hi Kieran On Sun, Aug 24, 2025 at 12:11:20PM +0100, Kieran Kunhya via ffmpeg-devel wrote: > On Sun, 24 Aug 2025, 11:56 Michael Niedermayer via ffmpeg-devel, < > ffmpeg-devel@ffmpeg.org> wrote: > > > Hi Kieran > > > > On Sun, Aug 24, 2025 at 07:53:45AM +0100, Kieran Kunhya via ffmpeg-devel > > wrote: > > > On Sat, 23 Aug 2025, 21:33 Michael Niedermayer via ffmpeg-devel, < > > > ffmpeg-devel@ffmpeg.org> wrote: > > > > > > > Hi > > > > > > > > Here is the legal advice that i was given. > > > > The GA has the full text and that is much more detailed. > > > > Iam posting the relevant parts so the whole community can see it. > > > > > > > > "a claim that there is GPLv2 code in a file of > > > > FFmpeg origin that has the LGPLv2.1 license would be a breach of the > > > > FFmpeg's > > > > LGPLv2.1 license. While section 3 of the LGPLv2.1 would have allowed > > him > > > > to > > > > take the original FFmpeg files and change the license for them to > > GPLv2, > > > > he > > > > didn't follow the necessary steps to effectively change the license. > > So > > > > the > > > > original code he is building from is still under LGPLv2.1. Since code > > > > contributions to a copyleft work have to be under the /same /license > > as > > > > the > > > > code you are contributing to (Section 2(c), "You must cause the whole > > of > > > > the > > > > work to be licensed at no charge to all third parties under the terms > > of > > > > this > > > > License"), Paul's contributions to LGPLv2.1 files are under the > > LGPLv2.1 > > > > license because he didn't exercise the option to change them to GPLv2 > > > > first. A > > > > claim otherwise would be admitting he is in breach of the FFmpeg > > license." > > > > > > > > "You can safely assume that any new file he created with a license > > > > identifier in the file of LGPLv.2.1 is under the LGPLv2.1 license." > > > > > > > > "Paul's response to your use of his code may be to relicense his code > > under > > > > the AGPL,* but he cannot change the license retroactively - you would > > > > have to > > > > accommodate the AGPL license for any later changes you adopt, but not > > for > > > > any > > > > code you are using from before a license change." > > > > > > > > thx > > > > > > > > [...] > > > > > > > > > > Can you confirm the FFlabs lawyer said something different? > > > > I cannot confirm this. I dont remember ever seeing the reply or the > > question. > > > > My communication with the FFlabs lawyer was through a intermediary > > developer, > > who was very busy and the mails where also terse > > > > IIRC i also had to ask multiple times to get any awnser > > > > Translation: The FFlabs lawyer didn't agree with my agenda and so I went > and found one that did. > > It's funny how you are reluctant to post that lawyers opinion [because it > didn't agree with you] when you happily leak private discussions (e.g from > the CC) on this list all the time. > > To use Anton's words "tin-pot dictator" behaviour in action.
Date: Sun, 08 Jun 2025 14:40:25 +0200 From: Jean-Baptiste Kempf <j...@videolan.org> To: Michael Niedermayer <mich...@niedermayer.cc> Subject: Re: License question Hello, Lawyer says that, most likely,the COPYING file that comes after (newer) than the headers of the file prevails. So all his changes are GPLv2. :( BEst, On Sat, 7 Jun 2025, at 15:31, Michael Niedermayer wrote: > Hi jb > > any news ? > have you had time to ask the lawyer ? > > Its bad for FFmpeg to lack features that our competitors have. > (and thus also bad for FFlabs) > > librempeg has 36 decoders that FFmpeg does not have, id like to > get these into FFmpeg and even after the lawyer reply it will > still need likely a vote between cherry picking vs merging > > thx > > On Mon, Jun 02, 2025 at 10:34:27PM +0200, Michael Niedermayer wrote: >> Hi jb >> >> On Mon, Jun 02, 2025 at 09:50:53PM +0200, Jean-Baptiste Kempf wrote: >> > Hello, >> > >> > "All Librempeg modifications, and any new files >> > not available in FFmpeg, are licensed under GPL v2, unless stated >> > otherwise." >> > >> > Where is that from? >> >> git show paul/master:LICENSE.md >> >> the files themselfs contain unmodified LGPL headers >> >> thx >> >> [...] >> -- >> Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB >> >> I have often repented speaking, but never of holding my tongue. >> -- Xenocrates > > > > -- > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > Those who would give up essential Liberty, to purchase a little > temporary Safety, deserve neither Liberty nor Safety -- Benjamin Franklin > > Attachments: > * signature.asc -- Jean-Baptiste Kempf - President +33 672 704 734 https://jbkempf.com/ [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB it is not once nor twice but times without number that the same ideas make their appearance in the world. -- Aristotle
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