[x264-devel] YUY2 to YUV420P with OpenGL ES 3.1

[Chris Hiszpanski]

Done. For anyone interested, here's a compute shader for packed-to-planar conversion:
https://github.com/thinkski/coralvid/blob/master/src/yuyv_to_yuv420p.comp

Hard-coded for 720p, improvements welcome (GPL-2.0).


‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Monday, January 27, 2020 12:21 AM, Emily Bowman <silverbacknet at gmail.com> wrote:

> If you throw it up on a github, it'd probably get a few people who could use it, at least.
> 

> ffmpeg's been working on a gpu replacement/enhancement of swscale for a long time, but in the meantime, bespoke solutions have to fill the gap.
> 

> On Sun, Jan 26, 2020 at 10:37 PM Chris Hiszpanski <chris at hiszpanski.name> wrote:
> 

> > > Colorspace conversion is a bit out of scope for libx264, since that's
> > > a very deep rabbit hole to go into.
> > 

> > Makes sense, thanks.
> > 

> > > Note that YUY2 (YUYV) input is natively supported for 4:2:2 encoding
> > > already, although afaik it only has SIMD on x86.
> > 

> > Good to know. Yeah, not sure if it makes sense adding SIMD on ARM as
> > they're mostly used in relatively lower-powered embedded devices that
> > typically have hardware encoders (bizarre to me that i.MX8M does not),
> > and the SIMD instructions would barely achieve real-time frame rates._______________________________________________
> > x264-devel mailing list
> > x264-devel at videolan.org
> > https://mailman.videolan.org/listinfo/x264-devel
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