Video Bleed & Interference

Forum for questions and support relating to the 1.24.x releases only.
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browndog
Posts: 14
Joined: Wed Sep 30, 2009 10:07 am

Video Bleed & Interference

Post by browndog »

I have a generic 4 channel DVR PCI card with the following details on it:

PTK8606/P-RA
0426HTQK

CONEXANT
FUSION 878A
25878-13
0450Y1DG
0450 TAIWAN

SKY-104 05042817297 UCC4 VER 2.0 S/N: -------------

I believe it works by splitting a standard video image into 4 sections so I have set each camera to 360x288 (1/4 PAL image).

When I connect a single camera (Channel 0) I get a stable image without any problems, however I have tried to connect another camera (Channel 1) and although I can see the feed from both they are jumpy and interfering with each other.

I have tried changing the settings for Maximum FPS in the source settings.
When I set it to 5fps for both cameras they both show the same feed for some reason. I thought that as PAL is 25fps and I am running 2 cameras that I should set it to 12.5fps - and this does show 2 separate feeds but they are very jumpy with the next frame sliding down the image.

There is a variable dial on my DVR card which I have also tried tuning with a screwdriver - but I can only get one or the other feed stable and not both.

My question is - what Maximum FPS and Alarm Max FPS settings should I use to get this card working correctly?
User avatar
kingofkya
Posts: 1110
Joined: Mon Mar 26, 2007 6:07 am
Location: Las Vegas, Nevada

Post by kingofkya »

you need to unset a option called

v4l_multi_buffer

or something like that it in zm options.

I did the same thing with my first capture card.
browndog
Posts: 14
Joined: Wed Sep 30, 2009 10:07 am

Post by browndog »

That fixed it!
Many thanks for your suggestion - I now have 2 perfectly stable feeds.
:D
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