Hi, As part of applying to the outreachy program, I compiled the code in https://gitlab.collabora.com/koike/v4l2-codec.git I get errors running it. When I install vicodec.ko I see in the kernel log: [10752.727509] vicodec vicodec.0: Device registered as /dev/video2 [10752.727534] vicodec vicodec.0: Device registered as /dev/video3 I think /dev/video0, /dev/video1 are already used by uvcvideo The dev file used in v4l2-decode.c is "/dev/video1" When running the code as is, it prints: "mmap: Invalid argument" Changing the code of v4l2-decode.c to use "/dev/video0" prints: "Driver didn't accept RGB24 format. Can't proceed." Changing it to use "/dev/video2" prints: "Driver didn't accept FWHT format. Can't proceed." Changing it to use "/dev/video3" prints: "Driver didn't accept RGB24 format. Can't proceed." I tried it on both kernel and modules 4.19.0-rc4+ compiled from https://git.linuxtv.org/linux.git and kenel and modules 4.19.0-rc1+ compiled from git://linuxtv.org/media_tree.git Any idea what is the problem or how to investigate ? Thanks, Dafna Hirschfeld
