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Striped video screen

Posted: Sun Apr 21, 2013 4:56 pm
by wzazza
Hello,
I`m totally new to zoneminder and linux it self (so I have no idea at all with what to start in my problem). Somehow I managed to install zoneminder and added one camera (monitor), but when I try to view it, it`s showing striped black and white screen (see attached file).

I have Ubuntu 12.10; ZoneMinder: v1.25.0;
Video capturing card works as 4 separated video channels: /dev/video[0 to 3]
Could it be that this card is broken? Or is this something else.
I have no idea with what to start to fix this problem, could someone please help? If possible in some "zoneminder/linux for dummies" way. Thank you.

Re: Striped video screen

Posted: Sun Apr 21, 2013 8:49 pm
by skyking
post the card model, the camera, and the settings you used when setting up the monitor. These will all be helpful for anyone who can answer. I don't have an analog setup right here to look at, but what you have seems to be a setting problem.

Re: Striped video screen

Posted: Sun Apr 21, 2013 10:14 pm
by wzazza
When runing "lspci" in terminal, it shows that the card is: Philips Semiconductors SAA7134/SAA7135HL Video Broadcast Decoder.
Bought the card from dealextreme: goo.gl/ddSx4
Cameras are also from DX: goo.gl/dIWwL and goo.gl/6nc9c
(sorry for links as text, as a new member to forum I cannot post full links yet).

Settings for monitor:
General
Source Type: local
Function: monitor
Enabled: [true]
Maximum FPS: 25.00
Reference Image Blend %ge: 7

Source
Device Path: /dev/video3, - also tried with video0, video1, video2
Capture Method: Video for linux version 2
Device Channel: 0
Device Format: PAL (tried also with NTSC)
Capture Palette: YUYV
Capture Width (pixels): 320
Capture Height (pixels): 240

I have not changed anything else.

Re: Striped video screen

Posted: Mon Apr 22, 2013 3:12 pm
by wzazza
I have just installed 'Cheese' to test what will this program output, and have the same striped screen. After what I`m now thinking that the problem maybe is not connected with zoneminder at all, but with video sources /dev/video[0to3]
Also there is no difference if there is cameras plugged in or not, the same striped screen or sometimes totally black screen shows up.

This is slowly killing me :) Could anyone please give some advice what this could be and how to fix it.

Re: Striped video screen

Posted: Mon Apr 22, 2013 5:56 pm
by wzazza
Unbelievably I fixed this.
Here`s the solution:
What I did is:
1) Opened for editing file (as root user): /etc/modprobe.d/saa7134.conf
2) Added this line:
options saa7134 card=33,33,33,33
3) saved and restarted computer.

And that's it, it works now.