Re: Matching input sizes. (was: Multiple cameras?)

• Subject: Re: Matching input sizes. (was: Multiple cameras?)
• From: "John C. Randolph" <email@hidden>
• Date: Fri, 3 Feb 2006 17:22:30 -0800
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On Feb 3, 2006, at 5:17 PM, Roland Torres wrote:

John,

I recall that this came up a while back on the Firewire list, and the consensus was that 2 iSights at 640x480 far exceed the FW400 bandwidth, so it "automagically" downgrades one to fill the remaining bandwidth for the second camera. IIRC, a single 640x480 signal takes up about 90% of the FW400 data bandwidth (but don't quote me on that). A FW800 hub won't help, of course, since the iSights are FW400, but if you had 2 FW800 cameras on the FW800 ports it should work.

Bummer.

-jcr

John C. Randolph <email@hidden> (408) 914-0013
Roaming Cocoa Engineer,
Available for your projects at great Expense and Inconvenience.

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