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Simultaneous Multi-channel analog video capture card v4l2 recommendation

On Sat, 11 Feb 2006, Uno Lover wrote:
> but for now I just need a card that supports real simultaneous
> capturing from multiple analog inputs that works well with the v4l2 driver
> or maybe even IVTV.   30fps with at least 640x480 would be nice.

What you want ain't never going to work on a Epia, just because the
bandwidth on that bus is too small, and the device itself can barely
survive audiocapture for voip, in this case interrupts are the killer.

Currently we are investigating the issue ourselves, firewire has the same
inpact on a system, but has the advantage everything is encoded already,
but still kills the system with the wrong implementation.

So I think what you want would be something in the PCI-X or PCI-Express
range, or something like:

http://www.linuxdevices.com/articles/AT3888835064.html

Making you only store data, not collect, process and store.

Or something like a Analog -> Firewire box, connected to a firewire hub,
connected to the Epia.

But maybe people with experience in the sector (like architecture of the
Sony Anycast) could tell you more about the bandwidth involved in doing
this realtime.


Stefan de Konink




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