Security Camera PCI cards (Lorex 4 port)

[Mark Chafe]

Hi

Been noticing a few of these types cards at various stores like Home Depot and Futureshop and wondering if they would work well for software switching programs such as wirecast, vidblaster, etc.

The ones ive seen have 4 composite video inputs and are designed for security camera software with security cameras.

Has anyone used them for this other purpose? Would they be adequate or are they designed differently and would not be very good? They say they have 30 frames per second which should be ok, rather than time lapse or something.

Thanks

[Andy Tejral]

These are probably 'crunch' switchers. For security purposes, you don't care if the screen rolls once on the switch. You probably do.

I don't know anything about the programs you mention. But generally speaking, the switcher needs to be of the 'vertical interval' type meaning it waits until the bottom of the screen to make the switch. And the sources need to be in time either through genlock or synchronizers.

I doubt it will do what you want.

[Shaun Roemich]

Further to Andy's response: vertical interval OR frame store synchronized are what you are looking for.