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

Carl Eugen Hoyos ceffmpeg at gmail.com
Sat Apr 15 17:33:41 EEST 2017


2017-04-15 15:06 GMT+02:00 wm4 <nfxjfg at googlemail.com>:
> On Sat, 15 Apr 2017 07:55:50 +0200
> Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>
>> 2017-04-15 2:35 GMT+02:00 wm4 <nfxjfg at googlemail.com>:
>>
>> > Legally, all these copyright headers are meaningless, as long as the
>> > license is correct.
>>
>> You are joking, right?
>
> Well, are you joking? While it may seem so, you apparently aren't.

I am not joking:
The first paragraph of all open source licenses I know of say something
similar to "you may distribute this source code as long as you
don't change above copyright notice". If you say now that this
copyright notice is meaningless, you are either joking or - well,
you can imagine.

>> > If they weren't, FFmpeg would be in trouble for changing the copyright
>> > headers of all files added by Libav from "Libav" to "FFmpeg".
>>
>> Nobody is talking about the project name.
>
> OK?

We are not talking about the project name in the license text
(it of course has to be adjusted), I am talking about the
copyright notice above.

>> > 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.
>>
>> Do I understand correctly that you are neither defaming Clement nor
>> doing something that is illegal?
>
> Is that some sort of trick question? I'm doing neither.

Clement says that he wrote the code he committed by himself and
that it is not based on MPlayer code. You say he violated somebody's
copyright: Who is defaming anybody here?

> But what _you_ do is defaming the entire Libav project

No.
I am (to quote you) stating "facts" namely that 1) FFmpeg's
gitlog contains many commits that indicate avconv developers
have not correctly given attribution to FFmpeg developers
when moving or copying code and 2) that other commits in
addition to those linked by Ivan (probably myself in the past,
I didn't remember) exist.

> (and possibly me),

I don't remember doing this.

> which is illegal

Please stop calling my actions illegal

Carl Eugen


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