QuickTime Image Compression Manager and sound

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mg - 21 Jun 2007 18:28 GMT

According to the introduction paragraph in Image Compression Manager
Reference, the ICM is suppose to be able compress/decompress sound,
but the ICM's API seems to be geared to handle images exclusively.
Does anyone know how to make ICM handle sound?

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Reinder Verlinde - 22 Jun 2007 09:34 GMT

> According to the introduction paragraph in Image Compression Manager
> Reference, the ICM is suppose to be able compress/decompress sound,
> but the ICM's API seems to be geared to handle images exclusively.

I guess you refer to
<http://developer.apple.com/documentation/QuickTime/Reference/QTRef_Image
Comp/index.html?http://developer.apple.com/documentation/QuickTime/Refere
nce/QTRef_ImageComp/Reference/reference.html> (next time, please be more
specific about where you read something. It increases your changes of
getting an answer, let alone a meaningful one)?

I think that paragraph is in error
<http://developer.apple.com/documentation/QuickTime/RM/CompressDecompress
/ImageComprMgr/B-Chapter/chapter_1000_section_1.html> does not mention
sounds.

> Does anyone know how to make ICM handle sound?

For a weird definition of 'handle': store the data in .jpg or .bmp
format, and use image compression calls to 'handle' the sound.
You may be happier with an answer to the different question "Does anyone
know what functions I should use to handle sound?"

<http://developer.apple.com/audio/>. Depending on what you exactly want
to do, this will lead you to QuickTime, Core Audio, or perhaps sample
code such as
<http://developer.apple.com/samplecode/ConvertMovieSndTrack/>

Reinder

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Mac Forum / Programming / Mac Programming / June 2007

QuickTime Image Compression Manager and sound