[FFmpeg-devel] Status of WMA decoding

Jethro Walters turkeyman121
Tue Sep 16 17:54:19 CEST 2008

--- On Tue, 16/9/08, Benjamin Larsson <banan at ludd.ltu.se> wrote:

> From: Benjamin Larsson <banan at ludd.ltu.se>
> Subject: Re: [FFmpeg-devel] Status of WMA decoding
> To: "FFmpeg development discussions and patches" <ffmpeg-devel at mplayerhq.hu>
> Date: Tuesday, 16 September, 2008, 3:07 PM
> Jethro Walters wrote:
> > Howdy everybody.
> >
> > What's the current status/activity of the Windows
> Media Audio decoder residing in libavcodec? As I understand
> it, it currently supports v7 & v8 without problems, and
> only WMA v9. AFAIK there's no "10 Pro" decoder
> as it's a completely different codec to V9,
> "Voice" for the same reason, and the same with
> Lossless. Who is the maintainer for the current decoders, if
> anybody? I'm not volunteering at the moment as my
> knowledge of C or C++ isn't great (but will improve once
> I get back to university), but I couldn't find anymore
> information around. I am half-willing to work on the
> Lossless decoder, because in theory it should be the
> simplest, yes? :-)
> >
> > I keep a loose eye on ffdshow-tryouts, and that's
> where I spotted the limited WMA decoder libavcodec has.
> I'd like to get full (current) WMA support working by
> the time I finish the year at uni. :-)
> >
> > Regards, 
> >
> > Jethro Walters
> >   
> Well the problem is that we only have "binary
> specification" for the 
> mentioned codecs. If you can get the specifications it
> would help really 
> much. We have some code that can decode parts of wmapro and
> wmalossless. 
> But it is far from complete.
> MvH
> Benjamin Larsson
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I have taken a look at the source code licensing from goodol' MS and they're $5000, less the (ironic considering the patent they have) free ASF reader. Guess it's time to do my research. At least I know what I'm looking for. :-D

Jethro Walters


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