Troubleshooting a Video Preview Window :: Troubleshooting (Image Acquisition Toolbox™)

Troubleshooting a Video Preview Window

When previewing the video stream, if you encounter a problem, try one of the following solutions.

Problem	Possible Solutions
Video Preview window stops running.	Close the preview window and reopen it. Verify that your image acquisition device is working properly. Close MATLAB and run the application that came with your device. Make sure no other application is using the device.
Video Preview window displays blank, gray window.	Close the preview window and reopen it. Check memory usage. It is possible that there is not enough memory available for the incoming image data. To increase the memory allocation, use the `imaqmem` function and specify a higher value for the `FrameMemoryLimit`. Make sure no other application is using the device.
Video Preview window displays dropped frames message.	Close the preview window and reopen it. Check memory usage. It is possible that there is not enough memory available for the incoming image data. To increase the memory allocation, use the `imaqmem` function and specify a higher value for the `FrameMemoryLimit`.

Problem

Possible Solutions

Video Preview window stops running.

Close the preview window and reopen it.
Verify that your image acquisition device is working properly. Close MATLAB and run the application that came with your device.
Make sure no other application is using the device.

Video Preview window displays blank, gray window.

Close the preview window and reopen it.
Check memory usage. It is possible that there is not enough memory available for the incoming image data. To increase the memory allocation, use the imaqmem function and specify a higher value for the FrameMemoryLimit.
Make sure no other application is using the device.

Video Preview window displays dropped frames message.

Close the preview window and reopen it.
Check memory usage. It is possible that there is not enough memory available for the incoming image data. To increase the memory allocation, use the imaqmem function and specify a higher value for the FrameMemoryLimit.

Troubleshooting Windows Video Hardware

Contacting The MathWorks and Using the imaqsupport Function

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