Monday, 3 March 2014

Broadcast Wav support

New Sound file inspector:

Anybody who's dealt with moCap sessions where you're recording audio will have probably run into the broadcast wav format, an extension of the standard wav but containing a whole extra chunk of metaData specifically aimed at syncing data around studio's. The key is that it includes an internal timecode for the wav, usually pumped into it from the studio's timecode generator so that video, audio and moCap all has the same reference and can be kept in sync.

In order to use this at work, and because we use the Red9_AudioNode as a basis for all Maya audio functions, I've added in full BWav support to the Red9.AudioNode this is both at a simple inspect level (Wav Inspector - launched from the Red9_Sound menu in the Trax Editor seen below) and full support from the code side, so you can cast any sound node to a Red9_AudioNode and just run the .bwav_getHeader(). This builds up an internal dict with all the header data bound to it.




If the wav isn't a Bwav then you still get the main header data, it just omits the BroadcastWav block from the UI.

This has been an absolute pain in the arse to extract as I've had to get deep into binary chunks to fine where in the file stream the Bwav header data block exists!

Anyway, this will be in the next release, unless you want to give it a whirl in which case drop me a mail

cheers

Mark