webcam resolution unavailable Matlab 2017a

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Goupil56
Goupil56 el 3 de Ag. de 2018
Editada: Goupil56 el 5 de Ag. de 2018
Hi, When using webcam in ubuntu 16.04, there is only one resolution possible (the max). It's the same with the internal webcam in my notebook and for my Logitech C910.
In Ubuntu, it's working with other software (for eample with qtcam, all of the available resolution are detected -- see results below). Matlab doesn't even recognize the type of the camera (I don't see Logitech name for example).
With Windows, it's working (same computer, same version of Matlab than the one in ubuntu).
Where is the problem ? Bug ?
Thanks
---------- Results in Matlab:
>> camera=webcam(1)
camera =
webcam with properties:
Name: 'UVC Camera (046d:0821)'
Resolution: '2592x1944'
AvailableResolutions: {'2592x1944'}
----------------- Results from terminal in Ubuntu:
>> lsusb
Bus 001 Device 009: ID 046d:0821 Logitech, Inc. HD Webcam C910
>> lsusb -s 001:009 -v | egrep "Width|Height"
wWidth 640
wHeight 480
wWidth 160
wHeight 120
wWidth 176
wHeight 144
wWidth 320
wHeight 176
wWidth 320
wHeight 240
wWidth 432
wHeight 240
wWidth 352
wHeight 288
wWidth 544
wHeight 288
wWidth 640
wHeight 360
wWidth 752
wHeight 416
wWidth 800
wHeight 448
wWidth 864
wHeight 480
wWidth 960
wHeight 544
wWidth 1024
wHeight 576
wWidth 800
wHeight 600
wWidth 1184
wHeight 656
wWidth 960
wHeight 720
wWidth 1280
wHeight 720
wWidth 1392
wHeight 768
wWidth 1504
wHeight 832
wWidth 1600
wHeight 896
wWidth 1280
wHeight 960
wWidth 1712
wHeight 960
wWidth 1792
wHeight 1008
wWidth 1920
wHeight 1080
wWidth 1600
wHeight 1200
wWidth 2048
wHeight 1536
wWidth 2592
wHeight 1944
wWidth 640
wHeight 480
wWidth 160
wHeight 120
wWidth 176
wHeight 144
wWidth 320
wHeight 176
wWidth 320
wHeight 240
wWidth 432
wHeight 240
wWidth 352
wHeight 288
wWidth 544
wHeight 288
wWidth 640
wHeight 360
wWidth 752
wHeight 416
wWidth 800
wHeight 448
wWidth 864
wHeight 480
wWidth 960
wHeight 544
wWidth 1024
wHeight 576
wWidth 800
wHeight 600
wWidth 1184
wHeight 656
wWidth 960
wHeight 720
wWidth 1280
wHeight 720
wWidth 1392
wHeight 768
wWidth 1504
wHeight 832
wWidth 1600
wHeight 896
wWidth 1280
wHeight 960
wWidth 1712
wHeight 960
wWidth 1792
wHeight 1008
wWidth 1920
wHeight 1080
wWidth 1600
wHeight 1200
wWidth 2048
wHeight 1536
wWidth 2592
wHeight 1944

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