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raddog
Joined: 18 Dec 2005
Posts: 12
Location: Kansas City
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 Posted:
Sun Dec 18, 2005 5:07 pm Post subject:
Using CODEC G.726 |
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I have ASF files which have sound tracks alledgedly adhering to CODEC G.726. Multiple mics have been used to record different sound samples, and there's a desire to be able to mute these audio streams independantly of one another.
Has anyone done anything like this with WMP? If so, can you point me to some really simplisitic sample code/documentation, or pretty much anywhere you think I might begin to figure out how to do this?
Like my previous question about grabbing an image, I'm guessing this will be some kind of DirectShow or DirectX insertion of a filter or graph, but I'm bogged down in the conceptual documentation on how it's supposed to work an unable to see the particulars in making it work.
Any and all help will be gratefully received.
Thanks!
- john ferguson, kansas city, (raddog58_AT_yahoo.com)
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Neil Smith [MVP Digital M
Guest
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| Posted:
Mon Dec 19, 2005 1:30 am Post subject:
Re: Using CODEC G.726 |
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On Sun, 18 Dec 2005 11:30:02 -0600,
raddog58@yahoo-dot-com.no-spam.invalid (raddog) wrote:
| Quote: | I have ASF files which have sound tracks alledgedly adhering to CODEC
G.726. Multiple mics have been used to record different sound
samples, and there's a desire to be able to mute these audio streams
independantly of one another.
Has anyone done anything like this with WMP? If so, can you point me
to some really simplisitic sample code/documentation, or pretty much
anywhere you think I might begin to figure out how to do this?
|
I don't think this is really what you're looking for, but it might be
an interesting read. It does mention terms like "channel masks" and
WAVE_FORMAT_EXTENSIBLE, so maybe some pointers in here :
http://www.microsoft.com/windows/windowsmedia/howto/articles/Multichannel.aspx
There's also an encoding tool for multichannel audio from multiple
single source WAVs (though not afaik G726, these would have to be
straight PCM AFAIK) : It's not documented -or- supported with any sort
of source code though :
http://www.microsoft.com/windows/windowsmedia/9series/encoder/utilities.aspx
| Quote: | Like my previous question about grabbing an image, I'm guessing this
will be some kind of DirectShow or DirectX insertion of a filter or
graph, but I'm bogged down in the conceptual documentation on how
it's supposed to work an unable to see the particulars in making it
work.
Any and all help will be gratefully received.
Thanks!
- john ferguson, kansas city, (raddog58_AT_yahoo.com) |
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raddog
Joined: 18 Dec 2005
Posts: 12
Location: Kansas City
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| Posted:
Mon Dec 19, 2005 2:30 am Post subject:
re:Using CODEC G.726 |
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This looks interesting. I'll have to check on the recording rates and such, as I don't have the specs in front of me. It would be nice if this will work.
Thanks for posting that!
- john
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