How to capture a video from a browser screen or a video stream on a computer and write this video to a file?

Question

Python

Also interested in information on how to filter all video streams to find out their number (for example). Anything on this topic: books (preferably in English), libraries, websites ...

Answer 1

ffmpeg will probably work. under Windows you can use dshow or gdigrab https://trac.ffmpeg.org/wiki/Capture/Desktop
https://ffmpeg.org/ffmpeg-devices.html#gdigrab
https://ffmpeg.org/ffmpeg-devices.html #dshow