Hi, I'm experiencing a lot of choppiness in the video output when I pass through my USB webcam to the guest using qemu-xhci as follows:
qemu-system-x86_64 -enable-kvm -hda arch-zoom.qcow2 -m 4G -vga virtio -device qemu-xhci,id=xhci -device usb-host,bus=xhci.0,hostdevice=/dev/bus/usb/002/004 My webcam is: Bus 002 Device 004: ID 04f2:b449 Chicony Electronics Co., Ltd Integrated Camera I am using mpv /dev/video0 from the guest. It works fine if I use usb-ehci instead, e.g.: qemu-system-x86_64 -enable-kvm -hda arch-zoom.qcow2 -m 4G -vga virtio -device usb-ehci,id=ehci -device usb-host,bus=ehci.0,hostdevice=/dev/bus/usb/002/004 In this case, the video output from mpv /dev/video0 is not choppy. My QEMU version is 5.2.0 -- I am running Arch Linux on the host and guest. Any ideas please? Thanks, Diego
