mindnut

I'm doing some basic motion detection using jit.grab. When I start the patch the app's CPU usage is 20% but as the app runs it runs up to 130+%. The app isn't doing anything but it's working really hard. Why is this?

I'm doing some basic motion detection using jit.grab.  When I start the patch the app's CPU usage is 20% but as the app runs it runs up to 130+%.  The app isn't doing anything but it's working really hard.  Why is this?


jit-grab-erratic-cpu-usage

 messages to switch the jit.grab object. Every time it got switched on and off it would add to the processor load. Does anyone know why this is?

The solution was to add a metro to the input of jit.grab with a toggle.

I was banging the Open and Close messages to switch the jit.grab object.  Every time it got switched on and off it would add to the processor load.  Does anyone know why this is?  

The solution was to add a metro to the input of jit.grab with a toggle.  

Why not just leave all your jit.grab objects open and then just use jit.xfade to fade between the two inputs or just crossfade to no input so the output is black ?

Starting a video capture device pushes the computer for a brief moment, like loading a big video file into the RAM, this explains the jump in CPU levels and is to be expected.

Why not just leave all your jit.grab objects open and then just use jit.xfade to fade between the two inputs or just crossfade to no input so the output is black ?
Starting a video capture device pushes the computer for a brief moment, like loading a big video file into the RAM, this explains the jump in CPU levels and is to be expected.


jit.grab erratic CPU usage