On 5/13/23 22:31, Andreas Fink wrote:
On Sat, 13 May 2023 14:50:33 -0600
the...@sys-concept.com wrote:
Getting an error message when trying to start usb-cam:
guvcview
ENCODER: no video codec detected for VP9 (VP9)
ENCODER: no video codec detected for Theora (ogg theora)
GUVCVIEW: version 2.0.8
GUVCVIEW: couldn't open /home/joseph/.config/guvcview2/video0 for read: No such
file or directory
V4L2_CORE: ERROR opening V4L interface: No such file or directory
GUVCVIEW (2): Guvcview error
no video device (/dev/video0) found
GUVCVIEW (Qt5): fatal error (0 devices detected)
GUVCVIEW (Qt5): creating error dialog
dmesg:
[935066.984348] usb 1-1.4: Product: Vega USB2.0 Camera
[935066.984350] usb 1-1.4: Manufacturer: Vimicro Corp.
[936075.049430] usb 1-1.4: USB disconnect, device number 47
[936080.312412] usb 1-1.4: new high-speed USB device number 48 using xhci_hcd
[936080.504291] usb 1-1.4: New USB device found, idVendor=0ac8, idProduct=0331,
bcdDevice= 1.00
[936080.504296] usb 1-1.4: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[936080.504297] usb 1-1.4: Product: Vega USB2.0 Camera
[936080.504299] usb 1-1.4: Manufacturer: Vimicro Corp.
Do you have read/write access to /dev/video0? Try with:
ls -lh /dev/video*
No, it wasn't the case.
I had to add support for V4L in the kernel.
I'm surprised that there was no emerge note after emerging the package, that
package needs V4L support in the kernel.