IC capture loss of frame rate driving me mad

[Sammyb]

Hello - for some unknown reason when i run IC capture with my DFK21 the frame rate is very erratic and keeps slowing down and speeding up and the capture windown keeps freezing.

Its driving me mad - can anyone please help!!!!

Sam

[juliosky]

Are you using a longer usb cable than supplied ,if so try using a powered usb hub.

[Sammyb]

no its the one that came with it

[juliosky]

Try reinstalling ic capture sorry thats as far as my knowledge goes

[andyboy1970]

Have you got anything else running at the same time?

[Lightsucker]

ic capture runs on usb 2 , I believe , maybe your usb is ubs1?

sounds like your pc is not keeping up the data flow that,s coming in.

just a wild guess

[andyboy1970]

ic capture runs on usb 2 , I believe , maybe your usb is ubs1?

sounds like your pc is not keeping up the data flow that,s coming in.

just a wild guess

That would be my suspicion, Lappy struggling.

[Bizibilder]

These are just some of the problems I have had getting my QHYIMG132E to run at a decent frame rate.

In no particular order;

As above - the correct USB

Is anything else running? - especially hidden/background downloads (if you have an internet connection)

If you have anti-virus - is it scanning your disc?

Anti virus - does it "see" your data from the camera as a "download" and therefore check/slow/stop it?

Are you using the most efficient software - My QHY camera runs at 4fps on the supplied software (and that's on a good day!!) and 70+ fps on Firewire (freeware) everything else being equal.

Hope they help point you in the right direction!

[andyboy1970]

I plan to give Firecapture a go.

[melsky]

I had this problem with my DMK41 and Vaio laptop, solved the problem by defragging it.

Mel

[michaelmorris]

Be aware that FireCapture may not run well on older computers. I ran the routine for in the preferences section for optimising the frame capture rate and this made a big difference on my single core processor, Windows XP Home edition machine.

[Sammyb]

Thanks for the responses. I am thinking it must be the laptop but its baffling me.

I had it set up in my home office running perfectly using YUY2/RGB24 at 30fps. Then in evening I set up with the camera on the scope, begin capturing an AVI of Jupiter and straight from the off the frame rate drops and the image window keeps freezing. Arrrggghhhh! I then shift to Y800/Y800 at 60 fps it works fine - no problem. Then I switch back to YUY2/RGB24 and guess what.... it works fine!

I then slightly change the gamma setting.... frame rate drops....

I don't understand it. But I'm learning to live with it as "one of those things".