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 ji.gt.movie 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?

best

jan

#44882
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 qt.movie.

here’s one way using groove~

– Pasted Max Patch, click to expand. –
#161585
Jul 29, 2009 at 12:09am

Thanx – that opens up a range of possibilities.

#161586
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 jit.qt.movie. QT is able to play up to 24 channels of audio. All you have to do is to configure AudioMidi Setup for surround sound.

#161587
Jul 29, 2009 at 2:36pm

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

#161588
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.

cheers,

oli

#161589
Jul 29, 2009 at 7:57pm

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

#161590
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.

Thanks

oli

#161591

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