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Creating a dummy v4l2 capture device without using 'v4l2loopback'

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Can i create a dummy v4l2 video device just like done by sudo modprobe v4l2loopback without using v4l2loopback via command line.I don,t want to use v4l2loopback because it is not able to call a function in my application .Any other command line solution will be highly appreciated .Main aim is to just stream a prestored video over a v4l2 video device. I am currently using ubuntu on RaspberryPi4.

Thanks in advance for your effort and time.

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