PV-143: occasional 'bouncing' images

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linuxsense
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PV-143: occasional 'bouncing' images

Post by linuxsense »

About once a day I seem to get 'bouncing' images from my cameras...if I pull up a montage view I can see all of the views bouncing up and down by a little bit, all windows show the same amount of movement. Sometimes it will stop on its own, other times I need to restart the system. I am assuming this is an issue with the capture card (PV-143..nice card for the $) but I am open to suggestions on other issues. So far I have not been able to find anything that triggers the bouncing so I cant really provide much more info. I have the issue with both ZM 1.22.3 and 1.23 RC1, the system is an Asus A8N-E with 2GB RAM and a AMD 4800+ Dual Core CPU (1MB cache ver). I am running Kubuntu 7.10.

Any suggestions on fixing this issue are very much appreciated. Driving me mad ;-)
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john_l_b
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Joined: Thu Aug 02, 2007 2:20 am

Other PV-143 problems

Post by john_l_b »

I haven't seen the bouncing inside a frame, but in testing with all four inputs monitored and video only going into one, the image appears in other monitors. Don't know the cause, but this was with the Pico 2000 setup in modprobe. With the latest Kernel (2.6.22.9-0.4-default) it does not seem to need a special modprobe setup to work with the PV-143.
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jameswilson
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Post by jameswilson »

i have seen this too myself and think its the card grabbing the evens or the odds of the frame. Not sure how to stop it but maybe 289 lines would if pal, (241 ntsc) guessing mind
James Wilson

Disclaimer: The above is pure theory and may work on a good day with the wind behind it. etc etc.
http://www.securitywarehouse.co.uk
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linuxsense
Posts: 374
Joined: Wed Nov 07, 2007 1:59 am
Location: Huntington Beach, California
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Post by linuxsense »

jameswilson wrote:i have seen this too myself and think its the card grabbing the evens or the odds of the frame. Not sure how to stop it but maybe 289 lines would if pal, (241 ntsc) guessing mind
Interesting theory...that seems to be just what is happening.

BTW: I have a video of the issue if anyone wants to see it.
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RoundSparrow
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Joined: Thu Oct 18, 2007 2:11 pm

Post by RoundSparrow »

I've seen similar with Kodicom 4400R boards... keep playing with different width/height resolutions and see what happens.
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haus
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Joined: Thu Oct 11, 2007 5:10 am

Post by haus »

I had this exact problem with my pico2000 card. The solution for me was to change frames per capture (or is it captures per frame...whichever) from 1 to 2 in the options panel. Of course on a pico2000 that takes a bad frame rate and makes it dismal, but it definitely worked. My eventual solution was to buy an 8-chip card from ebay and only use a couple of the 4 inputs on the pico2000. Only using 2 inputs out of the 4 allows me to set captures per frame to 1 and not have it hop/stutter.
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