What is the lower slider of QuickTime 10.5 on-screen controls for?
Hi,
The lower slider of on-screen controls seems to appear only with high fps (e.g. 120 with an 8k or 4k source), but its functionality is unclear; nothing in the QuickTime Player User Guide for Mac - Apple Support; any ideas?
Cheers.
iMac 27″, macOS 10.15