Config for RPi 4 and a webcam

[mwolfeu]

Question

I'm trying to get my RPi to stream with a generic UVC usb webcam. It has start up issues.

I used the ffmpeg line in the current docs:
cam:
runOnInit: ffmpeg -f v4l2 -i /dev/video1 -pix_fmt yuv420p -preset ultrafast -b:v 600k -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH
runOnInitRestart: yes

And when I start MediaMTX I get from ffmpeg:
closed: the stream doesn't contain any supported codec, which are currently AV1, VP9, VP8, H264, Opus, G722, G711

I'm grateful for any pointers. Thanks in advance!

[mwolfeu]

Also, any suggestions of working usb cams would be welcomed!

[mwolfeu]

I had to add -c:v h264 to the command.

[ldct-polemos]

What is the CPU usage? Any data?