Waydroid webcam

hi,

i have an external webcam which is working in Debian-12 with cheese.

now i want to run it on waydroid-sway-qube.

packages:
v4l2loopback-dkms
ffmpeg
adb

root terminal
modinfo v4l2loopback #shows cam

ls /devi/video* #shows connected cam as video0 and video1

sudo modprobe v4l2loopback device=1 video_nr=10 card_label=“WaydroidCam” exclusive_caps=1 #connects as virtual cam video10

sudo chmod 666 /dev/video10

ffmpeg -f v4l2 -i /dev/video0 -f v4l2 /dev/video10 #run in temrinal

#new root terminal
sudo waydroid prop set persist.waydroid.camera.mode external
#stops waydroid session

#user terminal
waydroid session start #restart the session

#video0,1 and 10 is availabe in terminal

but i cannot connect via adb to the waydroid
and in waydroid i only get the toast no camera device

has anyone an idea?