[vlc-devel] Speex audio in .flv container

Baptiste Coudurier baptiste.coudurier at smartjog.com
Fri Aug 29 19:10:34 CEST 2008


Hi,

Steven Woolley wrote:
> Hi all, I'm messing with the flash player 10 beta, which allows audio
> to be recorded in Speex format, but having a hard time converting it
> to anything else from the .flv.  I'm betting this will become a lot
> more common in the future given the openness and lack of patents for
> Speex vs. other flash audio codec's (nellymoser in particular).
> 
> 
> In a nutshell, speex in a .flv is new enough that noone supports it
> yet (and I'm not even sure the .flv's I'm generating are correct, but
> noone is, because until you have something that will read it, there's
> now way to say it's working or not!)
> 
> All I do know is that both vlc and ffmpeg give "Unsupported audio codec" errors.
> 
> So, a) is there any way to get vlc or ffmpeg to work with speex?  I am
> willing to do a custom compile, change code, etc. (if I knew where to start!)
> 
> or b) failing that, how do I simply output the raw speex audio stream from
> the flv to a pipe or file? So I can decode it with the official speex stuff?
> 

FFmpeg r15028 flv demuxer now supports speex.

It seems speex in flv does not embed extradata however (could not find
it in the file I got), so decoder might need some tweaking.

-- 
Baptiste COUDURIER                              GnuPG Key Id: 0x5C1ABAAA
Smartjog USA Inc.                                http://www.smartjog.com
Key fingerprint                 8D77134D20CC9220201FC5DB0AC9325C5C1ABAAA



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