[FFmpeg-soc] AAC Encoding - Where we stand, what's left

Diego Biurrun diego at biurrun.de
Wed Jul 8 20:36:23 CEST 2009


On Wed, Jul 08, 2009 at 01:49:59PM -0400, Alex Converse wrote:
> On Wed, Jul 8, 2009 at 6:52 AM, Kostya<kostya.shishkov at gmail.com> wrote:
> > On Wed, Jul 08, 2009 at 12:25:09PM +0200, Diego Biurrun wrote:
> >> On Mon, Jul 06, 2009 at 10:38:55PM -0400, Alex Converse wrote:
> >> > On Mon, Jul 6, 2009 at 9:28 PM, Diego Biurrun<diego at biurrun.de> wrote:
> >> > > On Mon, Jul 06, 2009 at 09:14:00PM -0400, Alex Converse wrote:
> >> > >>
> >> > >> To be frank, at this point it seems like it might be prudent for me to
> >> > >> stop working on this
> >> > >
> >> > > Uh, why?
> >> >
> >> > Getting faac free (by dropping long forgotten profiles and
> >> > reimplementing things from spec), seem like less effort than getting
> >> > FFmpeg to faac quality (running around trying to fix bugs in someone
> >> > else's codebase). Building on 26.410 v8.0.0 is attractive because it
> >> > is already better quality than ffmpeg and faac and includes a working
> >> > SBR implementation which would require tons of work to add to ffmpeg
> >> > or faac.
> >>
> >> What is "26.410 v8.0.0", where can I find it and how is it licensed?
> >
> > 3GPP TS 26.410 aka AAC encoder floating point code. Guess license by
> > yourself ;)
> 
> All of the encoder source lacks copyright notices/licensing terms
> 
> >From the Documentation:
> 
> No part may be reproduced except as authorized by written permission.
> The copyright and the foregoing restriction extend to reproduction in all media.
> 
> © 2008, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).
> All rights reserved.
> 
> >From the build system:
> 
> # Copyright (c) Coding Technologies 2003
> # All Rights Reserved

So this is completely nonfree, you may neither modify nor distribute it.
This is not something you can use as a base for your work unless you
wish to throw your time away...

Diego


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