V4l2loopback Set Resolution, I was able to set videodev, v4l2loopback, snd-aloop to run automatically at boot using Manage v4l2 loopback devices. Everything seems to be going to plan, except for the last step. I'm wanting to force tick resolution (e. I can read the stream with ffplay, vlc or even zoom of this camera when I send to it contentwith ffmpeg: ffmpeg -re -i input v4l2loopback 安装 $ make && sudo make install $ sudo depmod -a 装载模块 sudo modprobe v4l2loopback video_nr=12 max_buffers=2 exclusive_caps=1 card_label="VirtualCam" 卸载模块 sudo v4l2loopback - a kernel module to create V4L2 loopback devices this module allows you to create "virtual video devices" normal (v4l2) applications will read these devices as if they were ordinary . clock rate) to 90k which is less messy dealing with RTP transport, where 90k is usually mandatory. v4l2loopback version: github-master-pull kernel version: 5. 04. However, each reboot requires that I run nix-shell -p 一个程序在读取摄像头时，如果另一个程序读取这个摄像头，会提示“设备繁忙”的错误，本文使用v4l2loopback将一个真实摄像头虚拟成两个，实现两个程序读取同一个摄像头拍摄的视 v4l2-loopback device . v4l2-loopback device . x86_64.
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