[FFmpeg-devel] HAP QuickTime codec support

[Reimar Döffinger]

On Fri, Nov 14, 2014 at 08:43:25PM +0100, Reimar Döffinger wrote:
> On Fri, Nov 14, 2014 at 08:37:47PM +0100, Reimar Döffinger wrote:
> > On Fri, Nov 14, 2014 at 03:19:26PM +0100, bzk0711 at aol.com wrote:
> > > Dear ffmpeg developers,
> > > 
> > > is there any (planned) support for the Hap video codec in ffmpeg?
> > > 
> > > https://github.com/vidvox/hap
> > > 
> > > The implementation for Windows and Mac is available freely under a
> > > permissive license.
> > 
> > Where is the actual source of these implementations?
> > Above repository only contains some "boilerplate" wrapper, it lacks
> > the core part: DXT (texture compression format) compressor/decompressor
> > and is of very little value on its own.
> 
> Seems it should be possible to use https://code.google.com/p/libsquish/,
> though unfortunately it is C++ code.

Are you sure this compression format makes any sense whatsoever?
You get a 1:6 compression (exactly, compared to RGB888), but
also horrible compression artefacts.
Simply going to half the resolution in x and y with YUV420 gives
you 1:8 compression and I would bet it would even look better.
At least I have a hard time seeing how it could look much worse.