Why I can find only one available resolution for my webcam?

Hi there,

To briefly explain my problem, I was using webcam to acquire images on Windows and everything worked fine (MATLAB can find all available resolutions of my webcam). Then I used exactly the same code on my Ubuntu machine and expected the same outputs but it turns out this time MATLAB can only detect one available resolution. I tried with my inbuilt camera and it was the same - only one resolution is available. Can anyone suggest any solutions to this problem? Cheers!

Error message:

Error using webcam/set.Resolution (line 163)
Expected Resolution to match one of these values:

'1920x1080'

The input, '640x480', did not match any of the valid values.

Error in camSimple (line 6)
cam.Resolution = '640x480';

Actual available resolutions of my webcam:

[video4linux2,v4l2 @ 0x5623c76c28c0] Compressed:       mjpeg :          Motion-JPEG : 1920x1080 1280x960 1280x720 800x600 640x480 640x360
[video4linux2,v4l2 @ 0x5623c76c28c0] Raw       :     yuyv422 :           YUYV 4:2:2 : 1920x1080 1280x960 1280x720 800x600 640x480 640x360
[video4linux2,v4l2 @ 0x5623c76c28c0] Compressed:        h264 :                H.264 : 1920x1080 1280x960 1280x720 800x600 640x480 640x360

Answer 1

[Saurav Chaudhary]

Webcam Support package supports only the default Webcam resolution on Linux as of now. Go through the link given below to find more information about same.

https://in.mathworks.com/help/supportpkg/usbwebcams/ug/set-properties-for-webcam-acquisition.html#:~:text=You%20can%20set%20device%2Dspecific%20properties%20only%20for%20webcams%20connected,set%20as%20the%20second%20argument

[Wenye Ouyang]

I see, thank you for the answer!