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More comprehensive updates and knowledge base is maintained HERE
There are many UVC compatible webcams most of them support full auto mode but only a few of these cameras provide extended manual white balance, gain and exposure control. Kurokesu C1 family (C1, C1 PRO, C1 MICRO), Logitech C920 and Brio are the ones that can be trusted.
There are few tools to work with USB cameras in Linux. Probably V4L2-CTL is the most advanced and recommended command line tool for advanced users.
Fresh Linux might be missing utility, install it with simple command:
Now let’s see what we have connected on USB port
Cashew 1 7 1. Camera settings let you select a video camera to use with Adobe Flash Player. Right-click (Windows) or Control-click (Macintosh) the application image while it is playing. From the context menu, select Settings, and then click the Camera tab. I don't see the Camera tab, so I can't display this panel. I recently purchased a new HP 200-5020 All-in-One computer, with built-in webcam. I have looked everywhere I can think of for help in adjusting the built-in webcam settings. Honestly, I am not even sure where I go to open the webcam itself. When using Skype, I noticed the webcam is set much higher then I am tall.
Once you have the above settings set up in your camera, it is time to move on to things that matter when taking pictures. Best Camera Shooting Mode. While some photographers argue that it is best to always shoot in Manual Mode to have full control over your camera, I would. We don't have any change log information yet for version 2.80.853.0 of Logitech Webcam Software. Sometimes publishers take a little while to make this information available, so please check back in a few days to see if it has been updated.
Note two interfaces for Kurokesu C1 camera – this is dual stream output. One video device is for regular YUYV/MJPEG compressed output another is for h.264. You can open both of them at the same time with different programs (for example h.264 for live streaming, MJPG for onboard recording or computer vision processing)
List available controls
![Control Control](https://www.tenforums.com/attachments/tutorials/269042d1583265941-turn-off-camera-mic-application-guard-microsoft-edge-wdag_camera_and_microphone.png)
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Video for Linux V4L2 can report all available controls to single list. List is self explanatory with possible value ranges. Swinsian 2 0 0 – music manager and player rankings.
Kurokesu C1 family
Logitech C920
Logitech Brio 4K
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Reading current value
Read current UVC value with command below. Actual value is reported back below.
Setting new value
In order to set new camera parameter value use command syntax like this:
In some cases it is necessary to switch parameters in certain order for parameter to be set. For example change manual white balance control before setting fixed value:
Kurokesu C1 extension unit and firmware customization
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Besides standard UVC control it is possible to customize Kurokesu C1 family camera firmware to meet specific customer needs, for example:
- Set default UVC control values
- Edit de-noise parameters
- Edit USB frame size
- Edit MJPEG compression rate
- Edit h.264 bitrate
- Set low light behavior (lower down to 2 frames per second automatically or maintain stable frame rate)
- and much more
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Camera Extension Unit is designed for Linux and allows to alter even more controls not covered by UVC protocol (for example: spot/center/frame measuring mode).