Hi, On Sat, 15 Apr 2017, at 02:35, wm4 wrote: > > I do remember that in 2014 Ronald was pressuring Libav (e.g. Vittorio) > > about proper attribution to the changes done by multiple Libav developers > > when > > merging ffvp9. (AKA who exactly changed what). > > Legally, all these copyright headers are meaningless, as long as the > license is correct.
+1 Especially in countries with civil laws that have inalienable moral author rights (where FFmpeg and its forks were always developed) > If they weren't, FFmpeg would be in trouble for changing the copyright > headers of all files added by Libav from "Libav" to "FFmpeg". +1 See the copyright on collaborative projects. > It's possible that Libav is not always careful with attribution, but > it's the same with FFmpeg. For example, af_pan.c is LGPL, even though > it was ported from MPlayer GPL code, and the author could not be > contacted. Refusal to answer does not allow in any way relicensing. > Recently, I contacted the same author about relicensing the > same MPlayer code (of which af_pan.c was a subset of) to LGPL, and he > explicitly denied relicensing. So if I had been cehoyos, I probably > wouldn't shut up about how FFmpeg violates copyrights (fortunately I'm > not cehoyos). I think nowadays af_pan.c certainly does not violate the > original author's copyright though, because absolutely all code was > removed/replaced. Rewriting based on the same ideas also does not change the copyright. It is a derivative work under the Berne convention. I know it's not cool, but that's the international IP laws. -- Jean-Baptiste Kempf - President +33 672 704 734 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
