kris777 Posted August 5 Posted August 5 Can we count on adding a module to the future kernel... I mean: v4l2loopback 🙂 0 Quote
robertoj Posted August 5 Posted August 5 Does this package exist? (sorry I am away from my armbian device) https://packages.debian.org/bookworm/v4l2loopback-dkms 0 Quote
kris777 Posted August 5 Author Posted August 5 sudo apt install v4l2loopback-dkms Czytanie list pakietów... Gotowe Budowanie drzewa zależności... Gotowe Odczyt informacji o stanie... Gotowe v4l2loopback-dkms is already the newest version (0.12.7-2). 0 aktualizowanych, 0 nowo instalowanych, 0 usuwanych i 8 nieaktualizowanych. root@orangepi3-lts:~# sudo modprobe v4l2loopback modprobe: FATAL: Module v4l2loopback not found in directory /lib/modules/6.12.35-current-sunxi64 0 Quote
Ryzer Posted August 5 Posted August 5 It is not an internal module so modprobe will not work. It appears to need to built separately: https://github.com/v4l2loopback/v4l2loopback You should be able to build this if you have the kernel headers that match, the just load it by using sudo insmod instead. 0 Quote
kris777 Posted August 6 Author Posted August 6 (edited) I can't build it from GitHub, or rather I've built it but it doesn't work because the kernel headers don't seem to match and it can't be loaded. I guess you have to compile the entire kernel with this module 🙂 ..uppss Quote modinfo /lib/modules/6.12.35-current-sunxi64/updates/v4l2loopback.ko | grep vermagic vermagic: 6.12.35-current-sunxi64 SMP mod_unload aarch64 modinfo /lib/modules/$(uname -r)/updates/v4l2loopback.ko filename: /lib/modules/6.12.35-current-sunxi64/updates/v4l2loopback.ko alias: char-major-10-255 license: GPL version: 0.15.1 author: Vasily Levin, IOhannes m zmoelnig <zmoelnig@iem.at>,Stefan Diewald,Anton Novikovet al. description: V4L2 loopback video device srcversion: 45D4A1AED5D88ED1EEB4704 depends: videodev name: v4l2loopback vermagic: 6.12.35-current-sunxi64 SMP mod_unload aarch64 parm: debug:debugging level (higher values == more verbose) (int) parm: max_buffers:how many buffers should be allocated [DEFAULT: 2] (int) parm: max_openers:how many users can open the loopback device [DEFAULT: 10] (int) parm: devices:how many devices should be created (int) parm: video_nr:video device numbers (-1=auto, 0=/dev/video0, etc.) (array of int) parm: card_label:card labels for each device (array of charp) parm: exclusive_caps:whether to announce OUTPUT/CAPTURE capabilities exclusively or not [DEFAULT: 0] (array of bool) parm: max_width:maximum allowed frame width [DEFAULT: 8192] (int) parm: max_height:maximum allowed frame height [DEFAULT: 8192] (int) sudo modprobe v4l2loopback insmod /lib/modules/6.12.35-current-sunxi64/updates/v4l2loopback.ko insmod: ERROR: could not insert module /lib/modules/6.12.35-current-sunxi64/updates/v4l2loopback.ko: Invalid module format Edited August 6 by kris777 0 Quote
robertoj Posted August 7 Posted August 7 Uninstall the debian v4l2loopback package Did you add the build parameter to build for your specific kernel version? Did you do the final "make install" step? https://github.com/v4l2loopback/v4l2loopback?tab=readme-ov-file#build-for-a-different-kernel Search in the raspberry pi forum also 0 Quote
Solution kris777 Posted September 7 Author Solution Posted September 7 (edited) OK...I think it worked in OrangePi3 LTS 🙂 ...first, clean up the remnants: ................................................................. sudo apt purge v4l2loopback-dkms sudo apt autoremove ............................................................... armbian-config then I had to switch to a different kernel: edge:6.15.4-edge-sunxi64 ....then update the system: apt update / upgrade / reboot ! install from GitHub: v4l2loopback and then: cd ~/v4l2loopback .................................................................... VERSION=$(grep -oP 'PACKAGE_VERSION="\K[^"]+' dkms.conf) sudo cp -r . /usr/src/v4l2loopback-$VERSION sudo dkms add -m v4l2loopback -v $VERSION sudo dkms build -m v4l2loopback -v $VERSION sudo dkms install -m v4l2loopback -v $VERSION dkms status sudo modprobe v4l2loopback ls /dev/video* ................................................................... I guess it's OK now: ................................................................ Quote ls /dev/video* /dev/video0 /dev/video1 /dev/video2 /dev/video3 /dev/video4 root@orangepi3-lts:~/v4l2loopback# lsmod Module Size Used by v4l2loopback 45056 0 uinput 16384 1 bnep 16384 2 hci_uart 106496 1 btqca 16384 1 hci_uart btrtl 20480 1 hci_uart btintel 36864 1 hci_uart btbcm 20480 1 hci_uart But in my opinion the module is not working properly 😞 I'll be more precise, it works OK... but OrangePi3LTS is a weak device and the option/module: v4l2loopback and the ffmpeg program that transmits/splits the image to two programs (motion/ustreamer) causes high CPU usage... but it works OK, so my problem is solved Edited September 8 by kris777 0 Quote
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