Why does my Logitech C250 webcam preview fail with the Image Acquisition Toolbox 4.2 (R2011b)?

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Logitech C250 webcam preview works initially, but after preview is stopped then restarted, it doesn't work anymore (black screen). I have to unplug and replug the webcam to make it work again. This issue occurs with most resolution settings but a couple work fine (160x120 and 176x144).
I have tried using AMCAP utility with the webcam which works fine. However, AMCAP fails too if used after the webcam is previewed in MATLAB Image Acquisition Toolbox.

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 18 Oct 2013
This is a bug. A workaround for MATLAB Image Acquisition Toolbox 4.3 (R2012a) Prerelease is given below:
Go to 'Start' > 'Control Panel' > 'Hardware and Sound' > 'Devices and Printers' > Right click on the C250 webcam > select 'Properties' in the context menu.
In the 'Logitech Webcam 250 Properties' dialog box > open the 'Hardware' tab > click on the 'Properties' button.
In the new dialog box > open the 'Driver' tab > click on the 'Update Driver...' button.
Select 'Search automatically for updated driver software'.
Select 'Let me pick from a list of device drivers on my computer'.
Select the 'USB Video Device' driver from the list.
Close the dialog and restart your computer.

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R2011b

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