1 (edited by Chas Tennis 2018-Jun-28 20:47:05)

Topic: Time display in 8.25

My application is high speed video of tennis strokes.  (I have not used Version 8.26)

I use the countdown feature in Version 8.25 and it is great.  It is especially useful for side-by-side tennis stroke comparisons with setting "0" the time of racket to ball impact for each video.  The entire time line of the stroke motions is labeled.  This would apply to many sports: striking, throw release, kicking impact, etc.

But the countdown feature ends at 0 time.  It would be a big improvement if the countdown feature counted down to 0 displaying negative time and then counted past 0 displaying positive time. 

It would seem that this could be done all from frame "0" for side-by-side videos by coordinating the two videos on a single frame and using the frame rate data.   For side-by-side videos with identical frame rates probably only one time display is needed.

There is also a procedure required to set up the countdown that might be more direct. I have difficulty remembering this procedure. Perhaps a maximum time could be set prior to frame "0".  Does it have to count from the first frame of the video "segment"? and not back from frame "0". Are the frames always counted for each segment video?

8.25 Procedure to set up countdown mode.  From 2016 Nov 28 post by Joan in Version 8.25 thread.

"Stopwatch in countdown mode within the segment prior to the synchronization point should work. However the countdown mode only works if the stopwatch has a well defined range, specified by start and end points.

I think in your case you want to do the following:

    Go to the begining of the segment.

    Add the stopwatch object on the first frame.

    Right click the stopwatch and choose "Start"

    Move forward in time up to the synchronization point (shortcut: F8).

    Right click the stopwatch and choose "Stop".

    Right click the stopwatch again and choose "Countdown"."