The call recordings will be in MP3 format
Screen capture format will be MP4

Below are the details:

Call Recording:
Audio format: MP3
Mono file size per minute: 120 KB
Stereo file size per minute: 240 KB

Screen capture format: MP4
Avg. file size per minute for screen capture with 1 screen: 1.5 MB

Note: Screen capture file size may vary based on the screen resolution, screen activity and number of screens