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To capture an image that is not all black or saturated, I am currently using:

fswebcam -S 30 image.jpg

My application is a little delay sensitive and skipping around 30 frames every time to get a good image to process makes it difficult. I know capturing a frame from a running video sequence could solve this but I was wondering if there is a way to put the camera on standby or something similar to avoid having it to readjust to ambient brightness every time? Thanks.

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Most webcams will reinitialize after doing an operation (e.g. taking a picture). You can also observe this behavior on most mobile phones.

Best move would be to capture frames from a live video sequence, or look for a camera that won't reinitialize every after operation.

Alternatively, you can try tinkering with the fswebcam's --set switch. Refer to the man page for possible configuration options.

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