:: Re: [Frei0r] plugin set from the tr…
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Lähettäjä: Marko Cebokli
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Vastaanottaja: Minimalistic plugin API for video effects
Aihe: Re: [Frei0r] plugin set from the transcode project
Hello Francesco,

sad to hear Transcode is fading away, I noticed that there were no new
updates, but did not know it has gone that far.
I was planning to make a patch for the stabilizer, to improve edge handling,
since I still prefer to use Transcode's two pass stabilizer than any other
Linux based stabilization.

As for the ports, we already have hqdn3d ported to Frei0r, a couple of face
maskers, a levels plugin, and a couple of quite versatile lens distortion
correctors.
Denoisers other than hqdn3d (and denosie3D, which is very similar) and
sharpeners other than simple USM would be welcome I think, I am working myself
on some right now.

As far as extending the Freior API I would (STRONGLY?) object to bringing YUV
(Y'CrCb) type color spaces into the interface. Requiring the plugins to
support several color spaces causes a horrendous bloat to the code, especially
as there are a zillion different YUV type color spaces (packings). If we start
by admitting one, this might open the floodgates, I am afraid.
And there is nothing much to be gained from YUV, except maybe some speed, and
some gamut nobody really needs. In all other respects, YUV is inferior to RGB.

If anything, I would vote for a float RGB option there.

Marko Cebokli




On Friday 14 September 2012 09:49:55 Francesco Romani wrote:
> Hi there,
>
> I'm one of the former maintainers of transcode
> (http://www.transcoding.org - http://tcforge.berlios.de).
> transcode is an audio/video stream processor, which supports filtering
> using a custom API.
>
> Given the fact the transcode project is fading away, I took the liberty
> to port most of the transcode filters
> to the frei0r interface.
>
> Both for fun and for need, I also extended a bit the frei0r interface in
> order to accomodate it for the needs
> of the A/V processing (e.g. explicit YUV planar colorspace support).
>
> My effort so far was directed to porting, so it's very likely there is
> some duplication among the transcode
> plugins and the one frei0r already provides.
>
> The code is here: https://github.com/mojaves/tycho-plugins
>
> as the README says, any filter found under the src/ directory uses the
> plain vanilla frei0r interface
> so it is suitable for evaluation.
> Caveat: the testing so far is pretty minimal.
>
> I'm avalaible for any explanation about the code, and any comment will
> be appreciated.
>
> Regards,