isight Frames per Second?

Question

isight Frames per Second?

I noticed on my imac 24" 2.8 (while using photo booth) my built in isight records at 15fps

While my Macbook pro it recorded at under 12 FPS

Is that normal? Is there a setting to get it to record even better? Or if I go thru imovie can I get better quality of video?

15FPS is do-able- but 12FPS and it starts to look bad and out of sync.

Message was edited by: fenwaywhalers

imac 24" 2.8 (april 2008), Mac OS X (10.5.2)

Posted on Jun 6, 2008 2:01 AM

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Answer 1

Jun 6, 2008 6:57 PM in response to fenwaywhalers

The frame rate adjusts itself automatically based on the light level. Try turning on some lights and you should see them both increase to 30 fps. The difference is most likely because various Macs has completely different internal cameras.

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Answer 2

Jun 7, 2008 9:48 AM in response to Pastahelmet

Thanks- although we used it in very bright light and stil got only 12fps.

Is there someplace to find out if its simply the camera on the MacPro that can't go above 12 fps

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Answer 3

CodLBi

Level 3

720 points

Jun 8, 2008 1:03 PM in response to fenwaywhalers

iMovie 08>preferences>video standard>NTSC

These settings record video at 30 fps from the iSight camera.

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Answer 4

Jun 22, 2008 1:12 PM in response to fenwaywhalers

It is actually about a combo of things based on Processor, Video card and Lighting and how much work the Mac is doing on other things in the background and that includes running USB devices like the Internal camera.

The everyday speed I get out of my MacBook Pro is 15fps (see below for specs)
On particularly bright Sunny days with a firewire DV Converter attached I can get 20fps out of it.

My G4 seems stuck at 15fps unless I ma successful to a PC running AIM when it tends to run at 10fps to match them

There has been some speculation that it is also dependent at the speed that your buddy is sending you data and how much time your resources are giving to display that.

The more capable the camera the longer to produce it frame.
Same for incoming data - the more quality to the pic the longer it takes to process it.

I have seen no evidence that changing the settings for Quicktime Pro or iMovie changes this.

9:11 PM Sunday; June 22, 2008

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