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Re: variable rate timer




On 8 May 2006, at 11:36, Oliver Bown wrote:

Hello all,

I'd like to build a variable rate timing macro in QC, the purpose of which would be to be able to control the playback rate of a movie clip from MIDI in realtime. The dead simple method is to connect "patch time" to "math" so that you can multiply by some scale factor, and then send this value to "image with movie". The problem with this is that realtime rate changes also affect the instantaneous position of the movie, so you don't get smooth changes in the movie playback rate. To get smooth changes I would have to create a counter object where I could change the increment rate of the counter, instead of scaling its output. To my surprise I cannot find a way to achieve this effect in QC. If there was a simple way to connect outputs from math objects back into their inputs with control over timing this would make the job trivial.

Can anyone suggest a simple (or complicated) way to achieve this?

http://eskatonia.net/qcblog/2005/07/30/changing-the-speed-of-a- quicktime-with-external-timebase/


example composition does exactly what your asking for....

Roger
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