Cycling 74 » Topic: Audio/Video sync; calc for qt playback rate, and sync to either beat or bar. http://cycling74.com/forums/topic/audiovideo-sync-calc-for-qt-playback-rate-and-sync-to-either-beat-or-bar/feed Wed, 19 Jun 2013 15:17:22 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/audiovideo-sync-calc-for-qt-playback-rate-and-sync-to-either-beat-or-bar/#post-47030 <![CDATA[Audio/Video sync; calc for qt playback rate, and sync to either beat or bar.]]> http://cycling74.com/forums/topic/audiovideo-sync-calc-for-qt-playback-rate-and-sync-to-either-beat-or-bar/#post-47030 Sat, 05 Dec 2009 03:37:53 +0000 readywater Hi, trying to figure out the calcs for an audio-video sync patch based on the global transport and total frames. I’ve included some details in the patch, but here’s what I wrote:

“My goal in this patch:
Take a normal QT video input, probably a short clip but theoretically something larger. From this, have it replay with its start and end times synced to either a bar, a beat if too small, or multiple bars if overly large, BUT I want it to be as close to its actual FPS/playback rate as possible.”

Anyway, here’s my muddling sofar, but not quite sure of the next step… If anyone can advise, I’d appreciate it.

– Pasted Max Patch, click to expand. –

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