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To: gentoo-dev@g.o
From: Luca Barbato <lu_zero@g.o>
Subject: Re: New global use flag: vpx or vp8
Date: Tue, 03 Aug 2010 17:05:47 +0200
On 07/31/2010 05:09 PM, "Paweł Hajdan, Jr." wrote:
> On 7/31/10 4:37 AM, Hanno Böck wrote:
>> vpx for supporting googles vp8 codec used in webm.

No, vpx is for using libvpx.

>> At the moment this is only mplayer and ffmpeg, but it's pretty obvious that 
>> apps supporting vp8 will start popping up everywhere (currently working on 
>> arista ebuild which will support it).

> Just verifying: does the vpx USE flag in ffmpeg control the support for
> encoding vp8, decoding it, or both? How should www-client/chromium
> depend on ffmpeg to make sure it will support vp8?

it does trigger the use of libvpx, curreng ffvp8 (decoder) is faster
than libvpx, libvpx is used for the encoding side for now.

>> Though we might discuss if vpx is really a good name or it shouldn't be vp8.
> 
> It might also be webm. Not sure what's more intuitive for people. Also,
> nteresting question would be whether to enable the flag by default an in
> which profiles (desktop?).

vpx -> you use libvpx

vp8 -> you want vp8

as for decoding ffmpeg is already a provider so application using it
won't need additional useflag IMHO

lu

-- 

Luca Barbato
Gentoo/linux
http://dev.gentoo.org/~lu_zero



References:
New global use flag: vpx or vp8
-- Hanno Böck
Re: New global use flag: vpx or vp8
-- Paweł Hajdan, Jr.
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