Plus/minus icon, upper left

I know they have something to so the Zooming but how did they bet these -/+ valuses and how do I use them

I know they have something to so the Zooming but how did they bet these -/+ valuses and how do I use them
Those numbers show if/when the video is out of sync with the video, they have nothing to do with zooming.
It seems that you have moved either the audio or video portion of the clips by either pressing the Alt-key to temporary unlink video/audio or that you by mistake have clicked the Linked Selection button in the timeline. If you do the latter all clips are unlinked, always. Dangerous...
I know they have something to so the Zooming but how did they bet these -/+ valuses and how do I use them
By @mikecox_
Already have an account? Login
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.