[Ffmpeg-devel] Re: OpenAVS Project Help Wanted

Måns Rullgård mru
Fri Jul 7 11:52:30 CEST 2006

Michael Niedermayer said:
> Hi
> On Fri, Jul 07, 2006 at 03:46:22AM -0400, zhou13 at netscape.net wrote:
>> >Well, you're late.  We already have a decoder for Chinese AVS in
>> FFmpeg
>> >since a few days.  It was written by Stefan Gehrer.  You are of course
>> >welcome to contribute to it...
>> >Diego
>> I was just planning to vectorize the code and Stefan already did it.
>> The performance of the new code is /better/ than the official binary
>> Directshow filter version that is released by the original AVS
>> developers and better than the current openavs 1.0.3 release.  I would
>> still like to retro-fit Stefan's patch back to the OpenAVS project
>> because there wilare application scenarios that use only one codec (
>> like in DVB and DMB ). So that will still be valuable. However, what is
> its possible to disable codecs in ffmpeg so ffmpeg could be compiled with
> just c-avs support for such scenarios

Even if you disable everything, a lot of stuff still gets built.  I'm looking
at improving this.

>> done now is only the decoder part. Is there anyone who likes to make an
>> open source AVS encoder?
>> Also the audio part of the test bit streams you have access to are
>> MPEG-1 Layer 3.  This is not what the AVS audio standard going to use.
>> The audio standard uses techniques similar to AMR and is now in Final
>> Committee Draft phase.
> may i ask why for example vorbis is not simply used as audio codec?
> it has good compression/quality and as far as we know is not covered
> by patents


M?ns Rullg?rd
mru at inprovide.com

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