[FFmpeg-devel] PR new filter gltransition

[Rostislav Pehlivanov]

On 27 December 2017 at 23:13, Travis Fischer <fisch0920 at gmail.com> wrote:

> Hello,
>
> This is my first time contributing to ffmpeg, so please go easy on me :)
>
> I have a git diff here
> <https://github.com/transitive-bullshit/ffmpeg-gl-transition> which add a
> new filter to apply a GLSL transition between two video streams.  The
> github repo for this patch includes all of the relevant documentation and
> usage examples.
>
> (sorry, I'm not sure how to formally define the patch, as I'm used to just
> submitting PRs on github)
>
> I created this filter because of my frustration with how difficult and
> limited the *transition* possibilities were with current concat filter
> chains. Anything aside from basic video cross-fades isn't really possible.
>
> After releasing the filter as a standalone extension and seeing some other
> devs adopt it, I received a lot of feedback that this functionality should
> be merged info ffmpeg, so I wanted to get the ball rolling and see what
> everyone thinks on this list.
>
> Thanks!
> -- Travis Fischer <https://github.com/transitive-bullshit>
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I don't see the point of such a filter. Redundant. We already have a
properly implemented OpenCL filter support (and there's a patch to make it
accept generic kernels). This is a quick hack which requires 2 copies and
that's slow and inefficient.
Instead, how about a tutorial on how to convert glsl to opencl kernels?