i want a shortcut to dynamic start/stop record.

thanks, this is my favor tools to control my android device. i use record screen to files freqency.

- I have checked that NO similar feature request does already exist.

**Is your feature request related to a problem? Please describe.**
it's a new feature, NOT related to a problem. this tools is very powerful and roburst.

**Describe the solution you'd like**
when scrcpy started, i want press a shortcut like ctrl+r do start record screen to a video file, and after a while, if i press another shortcut or same shortcut, recording is stopped and the video file is written.

**Describe alternatives you've considered**
nothing add-on. thanks.

**Additional context**
nothing add-on. thanks.

No files, tests, or entry points are named in the request. Start by tracing scrcpy's shortcut handling and screen-recording controls; done means a shortcut can start and stop recording and the resulting video file is written.

Written by the indexing model from the issue text.