Re: Looking for advice - ffmpeg-free and wf-recorder

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On Sat, Dec 17, 2022 at 12:29 AM Bob Hepple <bob.hepple@xxxxxxxxx> wrote:
>
> I am the packager for wf-recorder (a wl-roots/wayland screen recorder) which presently resides in rpmfusion - it uses proprietary ffmpeg codecs by default (libx246).
>
> Now that we have ffmpeg-free we have an opportunity to move wf-recorder to the mainstream and change the default codec to the non-proprietary libopenh264. This woud be in rawhide/f38 and on.
>
> This all works fine in testing on f37. The fly in the ointment is that if ffmpeg/rpmfusion is installed in place of ffmpeg-free, then wf-recorder can no longer access libopenh264 and fails with an error. There is a workaround in the use of the option -c libx264.
>
> Several solutions occur to me and I'm looking for guidance on which path to take:
>
> 0. leave wf-recorder where it is, in rpmfusion as in f37 and earlier.
> A. compile wf-recorder as shipped by upstream with the default libx264 - the '-c libopenh264' workaround would be needed if ffmpeg-free is installed. This annoys users who install stock fedora.
> B. compile wf-recorder with libopenh264 as the default - the '-c libx264' workaround would be needed if ffmpeg/rpmfusion is installed and would annoy those users.
> C. leave wf-recorder in rpmfusion and create a wf-recorder-free package by analogy to ffmpeg (this might be obscure as it's not likely to get much publicity - and annoy everyone sooner or later)
> D. the best option might be to choose a codec common to both ffmpeg and ffmpeg-free. I'm not terribly au fait with the various codecs so which would I choose? These codecs appear to be in both packages:
>

I suggest going with option D, and my suggestion is libvpx-vp9.

libvpx-vp9 is common to both and reasonably fast. I made a similar
change to O3DE some time ago for similar reasons:
https://github.com/o3de/o3de/commit/add4ad4ad42fe36b04e80b3ee4ab2358fe5fd35e




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真実はいつも一つ!/ Always, there's only one truth!
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