My video streams are all compressed at 640x480 M-JPEG-B at around 80% quality. VDMX5 is the first mac program I have used that can keep up with my A/V triggering needs and I'm very excited (even beat out Modul8!). That being said, I want to make sure I'm getting the very best performance I can, and I've got no idea of what the equivalent of Motion-JPEG is on the audio side. Should I be using IMA? QDesign? Apple Lossless? PCM?
I honestly haven't done any testing with audio codec, but my hunch would be that you should go with Linear PCM as it's an uncompressed format and you probably want to be working with the best quality audio possible. As far as I know, when you are playing back a Quicktime movie that has audio, it's being converted to Linear PCM on the fly for playback anyway (to put it another way, it's the native format of QT).
Fortunately reading / decompressing audio tends to be a lot less intensive than video.. almost negligible compared to the work being done to deal with Motion JPEG, so you'll probably want to focus on it sounding good and not worry so much about the disk access.
- Dave @ VV
ps I don't think there is much of a difference whether or not you go with Little or Big Endian, this just has to do how the data is formatted (it's still uncompressed).
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