PROBLEM - Say you have an object that jumps around the video frame (person jogging, dog or child running around) and you want to have the camera follow them like a super steady cam or drone.
You could manually reframe the video with keyframes on every single frame. It will take ages and still be jittery. Or...
You can use an upside down version of the same video, as a tracking source, to absolutely stabilize movement of whatever you decide to track. But because of a bug in VPX, you can't just rotate the track 180 degrees and use it as a source. Instead, you have to export the track, rotated, first. Like this...
SOLUTION (from within your current project) -
1. create a new movie within the active project (by clicking on the "+" tab above the timeline).
2. paste/drag/load the clip you want to have tracked, onto the new tab.
3. in that new tab, rotate the clip 180% (rotate right, twice).
4. export that rotated clip at the lowest acceptable resolution.
5. go back to the original movies tab.
6. import the rotated clip into the original timeline, and place it above the un-rotated, original clip.
7. 'switch off the image' in the lower track.
8. select the lower of the two clips (the original, un-rotated clip)
9. right click - select "Attach to picture position in the video...".
10. click through the next two popup windows.
11. draw the square around the object that you want to be absolutely steady (in the rotated (upside down) clip).
12. wait till it calculates the tracking for you. Then 'switch on the image' in the lower track. Then 'switch off the image' in the upper track.
13. go to Effects - Size/Position - to make the video frame large enough, to remove black space around the clip, as it now jumps around to keep the tracked object steady within the clip.
14. at this point, you can even delete the rotated clip from the timeline and the magic of absolute tracking will remain.
15. don't use 'Zoom' in Size/Position. It'll break the tracking.
16. don't try to rotate the clip and not render it. I've tried every combination I can think up. It won't work. There's a bug in VPX, since 2017, whereby tracking info created from a rotated clip will always be applied to the target, as if the source is not rotated. Which in this case, means that the wobbly video just ends up being exactly twice as wobbly!
Will post a tutorial when I get the time. But the above will work. And the effect is perfect.
MAGIX Video Pro X Version 184.108.40.206 (UDP3)
proDAD Mercalli V5 Suite
NewBlue Filters 5 Ultimate
Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz 1.99 GHz
Intel(R) UHD Graphics 620 (driver version 220.127.116.1135)
16 GB Installed RAM
Windows 11 Pro 21H2 (OS build 22000.778)