I know I have the same problem!! laptops...
anyway
I am trying to get a hand on a point grey to run tests....
I found this page that lists uncompressed firewire cameras: http://damien.douxchamps.net/ieee1394/cameras/index.php
This one seems to have the best pfs for the price (199$), it's called firefly MV, however I will continue the search:
http://www.ptgrey.com/products/fireflymv/index.asp http://www.ptgrey.com/products/fireflymv/fireflymv.pdf http://www.ptgrey.com/products/Point_Grey_imaging_catalog.pdf
good luck and if you get good fps for good price with uncompressed firewire let me know...
best,
J
On 11/15/07, Olivier Heinry olivier.heinry@manga-burgah.net wrote:
Le jeudi 15 novembre 2007 à 20:23 -0800, Jaime Oliver a écrit :
I think your problem may not be in the driver but in the fact that you are using DV which compresses both at the camera and in your computer bus... (i believe...) I am also looking for the best (and cheapest) solution for latency. you should check uncompressed firewire options.
Coud you name a few?
The conexant 878 chip seems to be the fastest one that i've tried so far to capture analog video. it's a 20$ PCI tv tuner
I'm sorry it's a PCI card now my main machine is a laptop!
On 11/15/07, Olivier Heinry olivier.heinry@manga-burgah.net wrote:
Le jeudi 15 novembre 2007 à 18:47 -0500, Alexandre Quessy a écrit :
Hi all, Preparing one more Gem video perf with circus. :) (the 4th!)
I didn't like much using Firewire (ieee1394) under GNU/Linux, since the driver is pretty slow.
What would you guys recommend, if I want to use a nice miniDV camera ? It could either be a composite (BNC cable) capture card under GNU/Linux or the Firewire uner Mac OS X.
I've got a conexant BTxxx capture chip on a PCI board. I think the problem of the analog capture card its the poorer image quality than Firewire. And delay is quite noticeable to my opinion even on a linux box.
I think that the BNC cable is more flexible an easier to handle than the Firewire. It can also be very long, and that suits my needs, since it gives more flexibility to the cameraman.
There is also the firewire over optic fibre solutions: one of the dance companies Iw ork with purchased one, and it has an excellent image quality and very low delay over a 100m fiber. The fiber is actually more flexible than a cooper coax cable and a lot lighter. The prob with BNC is the weight of the cable itself which tends to damage the camera/peripheral connectors after a while.
See http://www.kramerelectronics.com/indexes/item.asp?name=648 for one of the cheapest FW over optic fibre solutions around in France. ++ O.
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