i tried both, audio definetly must be in the main process, not the pd~ process. see those patches where various techniques are described: http://www.uni-weimar.de/medien/wiki/Audiovideo
m. Am 07.12.2011 um 11:52 schrieb Jean-Marie Adrien: > Hi list, > > Is there a strategy to optimize GEM video processing and real time audio on a > single Mac using pd~ : > > Audio in subprocess or in main process ? > Any startup flags ? chmod +s stuff ? shm settings ? > Run two instances of PD with messages between them ? > Subprocess fifo size ? > > The idea would be to give a priority to sound versus video, if absolutely > necessary. > > Situation : > > On a single Mac (pro or mini), Gem (pix_video & tracking, ordinary > resolution and fps) and real time audio (10 channels, mainly reading from > disk), dispatched on four processor cores via pd~. The sound is generated in > the subprocess (big latency 512), the video in the main patch. pd-extended > 42.5 osX 10.7 &10.6, gem 93, 92. > > Problem : > > Sound is distorted when Gem is rendering, and becomes immediatly perfect when > stopping rendering (destroying the gem window). > Processors seem ok (each core at 75%). > > > Sticking with this problem for a couple of months, > Looked around in archives but didn't find any clear element. > > > Thanks > JM > > > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list
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