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? And so you went to another one until you got the answer you wanted? Kieran > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
