三个免费屏幕录制软件

1. OBS Studio

2. Screencastify

3. ShareX

Each of the picks meets the following basic criteria:

• Is easy-to-use
• Records the entire screen, a particular area, or one window
• Lets users annotate the recorded footage
• Includes system and microphone audio 
• Captures footage from external sources
• Has built-in export options

From: 10 BEST SCREEN RECORDING SOFTWARE PROGRAMS IN 2021 by Adeel Qayum