Helper for QuickTime Player allows to precisely trim a video by adjusting the markers (start and end) frame by frame using the keyboard.

Helper for QuickTime Player compute in live the time difference between the markers allowing for time measurement based on video.

 
 

by Precise Trimming it is meant to be able to easily select the frames used for the trim operation.

Precise Time measurement can be used to measure latencies, duration. With nowadays phones capable of 240 frame per second video capture this gives a precision of about 4 milliseconds.

to get support use button or send a message to : sgasparini at mac.com

 

You need to do measurement using Video or you’d like to use keyboard to position trimming marker, this is app is going to help.