[FFmpeg-devel] [Feature Proposal] hq*x filter Support

Clément Bœsch ubitux at gmail.com
Mon Jun 3 01:41:17 CEST 2013

On Sun, Jun 02, 2013 at 04:31:01PM -0700, Wyatt Ward wrote:
> > Why a web archive link, when hiend3d.com is up?
> I posted a webarchive link because hiend3d.com site does not seem to have the downloads available anymore. The entire site is a little broken; broken links amok and so forth.

I see, OK. Is that the most recent version where source code is available?

> >Why pointing out the 3x version instead of 2x or 4x?
> The majority of the information on how the filter works is on 3x. On 2x, it said 'for more information, see hq3x' or something similar.
> >Note: the code source GPL. It would be interesting to have some algorithm details instead to implement it in LGPL.
> I can try to find that; I'm pretty sure it won't be a huge problem.

Actually, I looked at the code, and the C version is LGPL, so it should be

> >If you don't plan to work on it, I would suggest to open a ticket on trac instead.
> I am a remarkably poor programmer, but I do try my best. I will open a ticket on trac and see if I can assist; however, I am 100% certain that I, with my limited ability, would not be able to complete it alone. 


> >Priorities is mostly a matter of taste. It's a fun filter, it would be welcome. We have a relatively similar filter already BTW (super2xsai).
> I  actually saw super2xsai in MSYS as I was compiling FFmpeg. It's what reminded me of HQX, because  super2xsai and HQX are both featured in a few emulators.
> Also, would I be able to plot an algorithm while looking at the source code? I am also poor at understanding the different licenses. I don't know if it would be acceptable to look at the source while plotting my own version of the algorithm.

Don't worry about it. The LGPL code should be enough.

> --
> If I made a mistake formatting this, I am very new to mail lists in that I have never actually done much but reading them, so forgive me and point out what I've done wrong and how to do it correctly.

It's OK, you down-posted ;)

Clément B.
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