multi channel sound in jitter

Jul 25, 2009 at 1:12pm

multi channel sound in jitter

hello all,

i am searching for a way to play back a multi channel sound file (i.e. with sfplay~ )in a frame exact synchronization with a video file?

i am working on a surround-sound installation and as far as my researches could discover the object does not support the playback of video files with more than 2 audio tracks (the video would play, but i can only access 2 sound channels). Are there any clever workarounds or maybe externals that could help me?



Jul 28, 2009 at 6:35pm

searching the forum for various terms involving syncing sound and video should reveal several solutions. the main idea is that you take a msp signal from your audio playback objects, and convert it into frame messages for

here’s one way using groove~

– Pasted Max Patch, click to expand. –
Jul 29, 2009 at 12:09am

Thanx – that opens up a range of possibilities.

Jul 29, 2009 at 2:07pm

I’m surprised you’re saying you can’t do that because I already did this. I had an installation with surround sound and video and I had all my audio tracks plus a smpte track for syncing the lighting playing from the QT movie with QT is able to play up to 24 channels of audio. All you have to do is to configure AudioMidi Setup for surround sound.

Jul 29, 2009 at 2:36pm

i confirm. can play (like qt itself) more than 2 channels. maybe up to 24.
i recently did it with 6 tracks without problem.

Jul 29, 2009 at 7:26pm

sorry to bring this a bit OT, but my question is kind of similar. i asked in lots of other forums but got no response. Did anyone manage to playback a 5.1 DVD on osx (or via bootcamp) using a studio soundcard, e.g. motu 828 connected directly to speakers i.e. without any DTS/AC3 decoder? if so what player do you use that allows you to route the channels? I tried with audio midi setup but DVDplayer always plays back in stereo.



Jul 29, 2009 at 7:57pm

You can playback the DVD with VLC and it’ll work fine with surround sound and a MOTU.

Jul 29, 2009 at 8:05pm

ah… sure i tried that with the 896 at work with no joy. Seems to work with my 828 at home though.




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