如何使用 USB 网络摄像头在树莓派上拍摄视频

Question

你好，我有一个 USB 网络摄像头，对于 picamera 来说太坏了，无论如何我可以写一个可以录制视频的 python 程序吗？

Answer 1

A few ideas spring to mind...

1. Identify which webcam you have

2. Plug it in and see if you can see it with:

   sudo lsusb

3. Install v4l-utils and see if it is accessible:

   sudo apt-get install v4l-utils

   v4l2-ctl --list-devices

4. Install ffmpeg and try using it:

   sudo apt install ffmpeg

   ffplay /dev/video0

If this works, you can record with ffmpeg or use OpenCV videocapture() to grab and record frames.