Cycling 74 » Topic: sync video and audio http://cycling74.com/forums/topic/sync-video-and-audio/feed Thu, 20 Jun 2013 01:24:34 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/sync-video-and-audio/#post-66854 <![CDATA[sync video and audio]]> http://cycling74.com/forums/topic/sync-video-and-audio/#post-66854 Mon, 04 Mar 2013 13:02:33 +0000 serenwen Hey guys,
so I have a Max patch producing some sounds, and I have to synchronize those sounds with a video. I remember there is a sync object for external sources but it’s obviously not working with video so do u have any suggestion about how I can do it?
Cheers

Serena

]]> http://cycling74.com/forums/topic/sync-video-and-audio/#post-240646 <![CDATA[Re: sync video and audio]]> http://cycling74.com/forums/topic/sync-video-and-audio/#post-240646 Mon, 04 Mar 2013 16:40:01 +0000 Rob Ramirez it depends on what objects you are using to play the sounds, and how you want them to sync.

if you are using sfplay~, and the video and soundfiles are the same length, you can take the millisecond signal output of sfplay~, convert it do floats (snapshot~), convert it to seconds (divide by 1000.0), and convert it to a frame for the video (multiply by the FPS of the loaded video).

so if you’re two seconds into your sound file, and your movie is 30 FPS, 2 * 30 = 60, send the message frame 60 to your qt.movie.

you should trigger the snapshot~ with the same metro you use to play the video, and set the metro interval to the FPS of your video.

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