PCI 4 channel capture cards?
- From: Michel Bardiaux <mbardiaux (at) mediaxim.be>
- Date: Tue, 13 Feb 2007 17:29:28 +0100
Yan Seiner wrote:
Odd Eirik Nes wrote:
Hi,
For a software project I'm looking for a PCI capture card to connect
up to 4
cameras to and be able to capture at (atleast) 20 fps from all cameras in
parallell. Constant framerate is the absolute top priority for this
system.
I've looked at Osprey cards, but they are too expensive. I've also
looked at
a IVC-200 card (4xBT878A chips), but we're having some problems
getting hold
of the card. The norwegian distributor is, ehm, very "laidback", so to
speak.
So what I'm looking for is similar capture cards. That is, they can do
100/120 FPS (PAL/NTSC) on 4 channels, and in a price range of approx
$200-250 (give or take, they'll most likely be quite a bit more
expensive in
Norway), and preferrably with a Norwegian distributor.
I don't think you can get enough bandwidth with bt878 cards to run 20
FPS for all 4 channels. (I could be wrong, but PCI + CPU just has so
much bandwidth. I tried to do something similar at one time but gave up
because of the CPU and hardware requirements.)
Even with a recent PCI-Express?
If you have enough slots, you can get 4 x Hauppage PVR150 cards for less
than $200 if you shop around; these provide a compressed mpeg2 stream at
30 fps with no problem - and no CPU load. Check out the ivtv project
for other supported hardware.
(Warning, though - it seems that Hauppage
has started shipping an unsupported card in PVR150 boxes...)
How typical. I sometimes wonder why they dont ship everything in just
one kind of box, absolutely blank of course.
I'm not sure of the status of hardware compression support in the v4l
project...
--
Michel Bardiaux
R&D Director
T +32 [0] 2 790 29 41
F +32 [0] 2 790 29 02
E mailto:mbardiaux (at) mediaxim.be
Mediaxim NV/SA
Vorstlaan 191 Boulevard du Souverain
Brussel 1160 Bruxelles
http://www.mediaxim.com/
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