vedant16: on Jan 3 you asked: "Hello, I have some issue using v4l2-ctl with vivid out device, is this is the right server to ask questions ?" hverkuil1: welcome back from vacation :-) I'm back from vacation, so yes, this is the right place to ask about that. hverkuil1: Hey, I solved the issue and sent a patch as well. Other than that it was issue with format mismatch between v4l2 and vivid Ah, OK. needed it to test my expbuf patch for libcamera: v4l2CompatLayer Applied the patch.