[ITP] ffmpeg (5.1.2)

[Takashi Yano]

On Sun, 5 Feb 2023 17:40:18 +0900
Takashi Yano wrote:
> On Sat, 4 Feb 2023 16:45:13 +0000
> Jon Turney wrote:
> > On 24/01/2023 03:28, Takashi Yano via Cygwin-apps wrote:
> > >>> Thanks!
> > >>>
> > >>> For a long time, ffmpeg was not included in Fedora, due to concerns
> > >>> about codec patents, but those issues seem to have been resolved.
> > >>>
> > >>> Can you please investigate what configuration is used in Fedora, and
> > >>> what the effects of matching that would be?
> > >>
> > >> Thanks. I will check the configuration of fedora.
> > > 
> > > I have checked the configuration of ffmpeg in fedora.
> > > It seems that most of codecs are disabled in fedora
> > > by default unless 'all_codecs' flag is specified.
> > > https://src.fedoraproject.org/rpms/ffmpeg/blob/f37/f/ffmpeg.spec
> > > 
> > > I have built a ffmpeg package using the configuration
> > > almost imitated fedora.
> > > https://tyan0.yr32.net/cygwin/x86_64/release/ffmpeg-free/
> > > 
> > > You would find this ffmpeg of the above configuration is
> > > almost unuseful...
> > > aac, h264, hevc, mpeg4, wma, wmv, etc. are not supported.
> > > 
> > > I also imitated the configuration with 'all_codecs' flag
> > > and have built another ffmpeg package.
> > > https://tyan0.yr32.net/cygwin/x86_64/release/ffmpeg-all_codecs/
> > > 
> > > This is almost common with the major ports of ffmpeg.
> > > 
> > > Could you please review them?
> > 
> > Thanks for looking into this.  The packaging looks fine from a technical 
> > standpoint.
> > 
> > The concern here is that we have an informal policy to only accept 
> > packages which is would be allowed in Fedora (by it's policies on 
> > content and being free of legal encumbrances (e.g. license, patent and 
> > trademark issues))
> > 
> > After some discussions, it seems that policy should be formal.  I've 
> > amended [1] to state that.
> > 
> > I'm sorry to cause you more trouble, but given that, can you package 
> > this based on the codec set in Fedora's ffmpeg-free?
> 
> Thank you for your consideration. I have re-arranged the ffmpeg
> package basend on Fedora's ffmpeg-free package.
> 
> https://tyan0.yr32.net/cygwin/x86_64/release/ffmpeg/
> 
> > If you don't think the package is useful under those constraints, don't 
> > let this discourage you from offering either the cygport for interested 
> > people to build it themselves, or the packages via an overlay package 
> > server [2]
> 
> As I mentioned in IRC, the Fedora approved numerous of codecs for
> ffmpeg recently. As a result, ffmpeg-free package becomes much more
> useful compared to the past.
> 
> As far as using for ffmpeg-plugin of moc (Music player), it has
> almost enough codecs.
> 
> ffmpeg itself might be somewhat weak (e.g., no x264, x265),
> however, it whold be much better than nothing.
> 
> > [1] https://cygwin.com/packaging-contributors-guide.html#submitting
> > [2] https://cygwin.com/package-server.html#overlay

I revised the cygport file as attached.

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>
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