Hi folks.
I'm writing a flash app using ActionScript that streams audio from the
user's microphone to a server.
I have a proof of concept running, and the audio encoding is Nellymoser.
However, on the wikipedia page for the FLV file format, it claims:
"Audio in Flash Video files is usually encoded as MP3
<http://en.wikipedia.org/wiki/MP3>. However, audio in Flash Video FLV
files recorded from the user's microphone use the proprietary Nellymoser
Asao Codec <http://en.wikipedia.org/wiki/Nellymoser_Asao_Codec>.^[14]
<http://en.wikipedia.org/wiki/Flash_Video#cite_note-nelly-13> (Flash
Player 10 released in 2008 also supports the open source
<http://en.wikipedia.org/wiki/Open_source> Speex
<http://en.wikipedia.org/wiki/Speex> codec.^[15]
<http://en.wikipedia.org/wiki/Flash_Video#cite_note-14> ) FLV files also
support uncompressed audio or ADPCM <http://en.wikipedia.org/wiki/ADPCM>
format audio. Recent versions of Flash Player 9 support AAC
<http://en.wikipedia.org/wiki/Advanced_Audio_Coding> (HE-AAC
<http://en.wikipedia.org/wiki/HE-AAC>/AAC
<http://en.wikipedia.org/wiki/Advanced_Audio_Coding> SBR
<http://en.wikipedia.org/wiki/Spectral_band_replication>, AAC Main
Profile, and AAC-LC)."
How is it determined which codec is used? I want to be able to control the
codec; I don't want to have to support all these codecs when working with
the resulting audio on the server.
Thanks! <http://en.wikipedia.org/wiki/Flash_Video#cite_note-AUDIO-15>
--
Jeff Ramin
Software Engineer
Singlewire Software
PO Box 46218
Madison, WI 53744-6218
Phone Direct - 608.298.1024
www.singlewire.com
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