I have a v4l2loopback setup from OBS Studio. It works fine with
guvcview and Firefox (WebRTC)
Jami says "No camera detected"
Jami version 20210104.4.dda80df~ds1-1
$ v4l2-ctl -d /dev/video2 --all
Driver Info:
Driver name : v4l2 loopback
Card type : Dummy video device (0x0000)
Bus info : platform:v4l2loopback-000
Driver version : 4.19.132
Capabilities : 0x85208001
Video Capture
Video Memory-to-Memory
Read/Write
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x85208001
Video Capture
Video Memory-to-Memory
Read/Write
Streaming
Extended Pix Format
Device Capabilities
Priority: 0
Video input : 0 (loopback: ok)
Format Video Capture:
Width/Height : 1280/720
Pixel Format : 'YUYV' (YUYV 4:2:2)
Field : None
Bytes per Line : 2560
Size Image : 1843200
Colorspace : sRGB
Transfer Function : Default (maps to sRGB)
YCbCr/HSV Encoding: Default (maps to ITU-R 601)
Quantization : Default (maps to Limited Range)
Flags :
Format Video Output:
Width/Height : 1280/720
Pixel Format : 'YUYV' (YUYV 4:2:2)
Field : None
Bytes per Line : 2560
Size Image : 1843200
Colorspace : sRGB
Transfer Function : Default (maps to sRGB)
YCbCr/HSV Encoding: Default (maps to ITU-R 601)
Quantization : Default (maps to Limited Range)
Flags :
Streaming Parameters Video Capture:
Frames per second: 25.000 (25/1)
Read buffers : 8
Streaming Parameters Video Output:
Frames per second: 25.000 (25/1)
Write buffers : 8
User Controls
keep_format 0x0098f900 (bool) : default=0 value=0
sustain_framerate 0x0098f901 (bool) : default=0 value=0
timeout 0x0098f902 (int) : min=0 max=100000
step=1 default=0 value=0
timeout_image_io 0x0098f903 (bool) : default=0 value=0
