I want to display live video in LV, with the option to click on "delay" button, to view what happened N s. ago (i.e., a variable video delay)?

Hi. I have a standard video camera + PCI 1408. I can nicely show the current image, using LL Ring examples. I want a boolean switch so I can switch from watching the live video to the video recorded N seconds ago. My initial hope was to use LL Ring, with
lots of buffers, and copy/extract either latest buffers or a buffer several acquisitions ago. However, this seems to add no delay at all. Suggestions please? Thanks Patrick

Patrick,
What I start with is the sequence acquisition. I change it from one time to continuous, and simplify it a little bit.
I have included an example that shows how to set up a buffer and display delayed video.
One thing you have to do is open MAX and change the maximum number of buffers for IMAQ to something larger than 50. I usually select around 2000 buffers so that I never run out.
Bruce
Bruce Ammons
Ammons Engineering
Attachments:
Delayed_Video.vi ‏66 KB

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