I need a script (or anything) that will disable auto exposure for a UVC usb camera

[Nate_is_cool]

I don't care what it is but I need it. Something that will disable auto exposure/priority. My camera gets about 3-4fps with it enabled. Without it I get 10+fps. Can someone hepl me PLEASE?!

Much thanks

[Zugzwang]

Have you had a look into the documentation and/or source code of your UVC cam's driver?

[Nate_is_cool]

Honestly, I have no clue how where to find it. If you can post a link I will compile it. I'm just not all to sure what to change in it. I think its something to do with shutter speed. Any help please?

[Zugzwang]

Step 1: Plug in your device
Step 2: Type "dmesg" in the terminal to find out the name of the driver
Step 3: Google for it.

[Nate_is_cool]

Sorry for not understanding this but i typed in dmesg and i got alot of ouput. only thing related to my cameras is

[ 10.448261] uvcvideo: Found UVC 1.00 device <unnamed> (046d:09a5)
[ 10.469067] input: UVC Camera (046d:09a5) as /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/input/input6
[ 10.477577] uvcvideo: Found UVC 1.00 device <unnamed> (046d:09a5)
[ 10.498207] input: UVC Camera (046d:09a5) as /devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4:1.0/input/input7


i also found an article on how to disable it, but it doesn't specify where to input these commands

http://forums.quickcamteam.net/showthread.php?tid=182

I'm not all to good when it comes down to the kernel and driver layer of linux. sorry for any stupid questions.

[Zugzwang]

i also found an article on how to disable it, but it doesn't specify where to input these commands

http://forums.quickcamteam.net/showthread.php?tid=182

I'm not all to good when it comes down to the kernel and driver layer of linux. sorry for any stupid questions.

Oh, these commands are for the terminal, but they require a program that is not part of the standard linux distribution.

You can however try to compile it yourself and check those commands. You can download the sources here: http://www.quickcamteam.net/software/libwebcam

Good luck!

[Nate_is_cool]

Alright so I edited the source code and added Exposure auto to 0.

now all i need to do is
./configure
make
make install

is that correct?

Will i have to do this everytime I restart or is it permanent (up until they update the driver of course)

Thank you for the support

[Nate_is_cool]

I still am having problems on what to do. I am very simple when it comes to drivers in linux. I installed some software but I can't seem to find anything. Can someone just please fix this. Its really annoying and I've tried searching google but nothing comes up

[Zugzwang]

The point is the following. According to the web-site you referred to, you will not need to modify the driver. Instead, there is a utility ("uvcdynctrl") which will modify some parameters for you. You have to compile it first. I'm trying that right now for you....

There seems to be a little bug, described in http://forums.quickcamteam.net/archi...hread-181.html. I'll integrate the quick fix.

by reading the README-file and the post mentioned above, I came up with the following list of commands to compile this tool. You might need in install some packages to get it running (like libxml2-dev).

cd /tmp
mkdir webcam
cd webcam
wget http://www.quickcamteam.net/dev/libwebcam-0.1.1.tar.bz2
tar xfv *.bz2
svn co -r178 http://svn.berlios.de/svnroot/repos/linux-uvc/linux-uvc/trunk
cp trunk/uvcvideo.h libwebcam-0.1.1/Common/include
cp trunk/uvc_compat.h libwebcam-0.1.1/Common/include
cd libwebcam-0.1.1
cmake .
make

The control program is then located in "/tmp/webcam/libwebcam-0.1.1/Apps/Apps/uvcdynctrl". After compilation, you might want to copy it somewhere else such that it doesn't get deleted when restarting the computer. You do not need to rebuild it every time you restart the computer.

[Nate_is_cool]

OK so I did all that and i still get

ERROR: Unable to set new control value: A Video4Linux2 API call returned an unexpected error 5. (Code: 12)

when i input

uvcdynctrl -s "Exposure, Auto" 0

what could this mean??