[FFmpeg-devel] [PATCH 1/2] opus_pvq: add resynth support and band encoding cost function

[wm4]

On Sat, 15 Apr 2017 03:14:12 +0300
Ivan Kalvachev <ikalvachev at gmail.com> wrote:

> On 4/15/17, wm4 <nfxjfg at googlemail.com> wrote:
> > On Sat, 15 Apr 2017 00:28:19 +0200
> > Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> >  
> >> 2017-04-14 23:27 GMT+02:00 Clément Bœsch <u at pkh.me>:  
> >> > On Fri, Apr 14, 2017 at 02:30:28PM +0200, Carl Eugen Hoyos wrote:
> >> > [...]  
> >> >> We know that the avconv developers are violating the
> >> >> copyright of many people, we fix that in the FFmpeg code as
> >> >> soon as we are aware of it, there are many examples in gitlog.  
> >> >
> >> > This is a serious accusation, what are you referring to?  
> >>
> >> To the same (many) commits in the avconv repository that
> >> violate the copyright of FFmpeg developers as many times
> >> before - sorry, I don't understand: Are you implying you don't
> >> remember such a commit?  
> >
> > Of course you keep repeating your defamation without providing proof,
> > ever.  
> 
> http://git.videolan.org/?p=ffmpeg.git&a=search&h=HEAD&st=commit&s=attribution
> 
> I found the above link in the "Reintroducing FFmpeg to Debian" thread (2014).
> It still works :D
> 
> 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.

If they weren't, FFmpeg would be in trouble for changing the copyright
headers of all files added by Libav from "Libav" to "FFmpeg".

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. 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.