<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi list,<div><br></div><div>Is there a strategy to optimize GEM video processing and real time audio <u>on a single Mac</u> using pd~ :</div><div><br></div><div>Audio in subprocess or in main process ?</div><div>Any startup flags ? chmod +s stuff ? <span class="Apple-style-span" style="font-size: 12px; ">shm settings ?</span></div><div>Run two instances of PD with messages between them ?</div><div>Subprocess fifo size ?</div><div><br></div><div>The idea would be to give a priority to sound versus video, if absolutely necessary.</div><div><br></div><div><div>Situation :</div><div><br></div><div>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. </div><div><br></div><div>Problem :</div><div><br></div><div>Sound is distorted when Gem is rendering, and becomes immediatly perfect when stopping rendering (destroying the gem window).</div><div>Processors seem ok (each core at 75%).</div></div><div><br></div><div><br></div><div>Sticking with this problem for a couple of months, </div><div>Looked around in archives but didn't find any clear element.</div><div><br></div><div><br></div><div>Thanks</div><div>JM</div><div><br></div><div><br></div><div><br></div></body></html>