Distorted video with Logitech QC E2500 (Ubuntu Server 10.04)

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kayjaygee_13
Posts: 3
Joined: Sat Jul 31, 2010 1:04 pm

Distorted video with Logitech QC E2500 (Ubuntu Server 10.04)

Post by kayjaygee_13 »

Hi, I have a Logitech QuickCam (046d:089d) and I can't get ZM to display a proper video. I have tried every NTSC capture palette and the video either looks green or like the image below.

Image

Can anybody please give me some suggestions on how to fix this? I have just started with Ubuntu/Linux about a month ago, so please be as specific as possible. Thank you in advance.
kayjaygee_13
Posts: 3
Joined: Sat Jul 31, 2010 1:04 pm

Post by kayjaygee_13 »

Woohoo! I got it to work. After some more Googling, here's what I found out I needed to do :

1. Add the following line to the file zmdc.pl in /usr/bin/ just before the line "my @daemons" :

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$ENV{LD_PRELOAD} = '/usr/lib/libv4l/v4l1compat.so';
2. Install the package libv4l-0 with :

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sudo apt-get install libv4l-0
The camera is then able to display video correctly using either Video for Linux Version 1 or 2 capture method and RGB24 capture palette. A few other palettes also work and by playing around with the brightness and contrast, the red and green noise can be almost eliminated in dark conditions.

One minor problem is the package libv4l-0 is automatically uninstalled if the following cleanup command is run :

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sudo apt-get autoremove
Hopefully, this helps someone else trying to get this camera working.
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