Motion Tracker Issues

Rxrep1234

Newbie Joined: Dec 07, 2015 11:56 Messages: 2 Offline

Solved by

Dec 07, 2015 12:04

Video is from iPhone 6S. The steps I took were to first- Crop and Zoom (daughter's hockey goal from opposite side of rink), then, I used motion tracker to track her. The tracker works fine, however anything I put over it to highlight, whether it be a red circle or spotlight effect, does NOT follow the same path the tracker did. It is always about an inch behind the object (my daughter). When I go back, the tracking follows her exactly, but the effect doesn't. I've tried moving the effect to a different spot hoping that would correct it. I've tried doing the motion tracking before I cropped and zoomed. I've tried using different highlighting obecjts (arrows, circles, etc), yet the probnlem still persists.

I have no lag on my CPU. I've adjusted preview quiality to normal just to see, and that didn't help any.

Any ideas would be greatly appreciated. I upgraded to 14 just for this feature (I have a lot of hockey footage where I need to highlight individual players).

Is there any way to manually track the object?

Thanks in advance.

ynotfish

Senior Contributor Location: N.S.W. Australia Joined: May 08, 2009 02:06 Messages: 9977 Offline

Dec 07, 2015 13:07

Hi Rxep1234 -

Other members have come across this before, where they're combining cropping with motion tracking. It seems the best approach is to 1. crop the video as needed 2. produce the cropped video to a new file 3. apply motion tracking to the new video.

Motion Tracker, we assume, gets confused between positions on the original video & the cropped one, if you know what I mean.

Here's another thread where a member was having almost the same issue - http://forum.cyberlink.com/forum/posts/list/46223.page

Cheers - Tony
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Rxrep1234

Newbie Joined: Dec 07, 2015 11:56 Messages: 2 Offline

Dec 07, 2015 13:31

Thanks, Tony. I'll try that. The issue with mine is that it tracks perfectly, however the spotlight or the arrow or circle I apply doesn't track the same path as the original tracker. Weird.
Anyhow, appreciate it!

ynotfish

Senior Contributor Location: N.S.W. Australia Joined: May 08, 2009 02:06 Messages: 9977 Offline

Dec 07, 2015 14:38

Yes - it's not hard to generate odd tracking behaviour, especially in a sport where players are wearing the same colours and they cross over each other during plays.

Whenever I've used the motion tracker, I've spent most of the time tracking then correcting the tracking. Adding the arrow or marker is the easy but at the end. Position it relative to the "tracker" & it will do as you want - IF the tracker is accurately completed.

Screenshot & example attached.

Cheers - Tony

Filename	Tracking Example.wmv	Download
Description
Filesize	1818 Kbytes
Downloaded:	367 time(s)


Filename	Tracked Object.png	Download
Description
Filesize	285 Kbytes
Downloaded:	129 time(s)

This message was edited 1 time. Last update was at Dec 07. 2015 14:38

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Alan

Newbie Joined: Jul 24, 2016 18:17 Messages: 2 Offline

Jul 24, 2016 18:44

I am trying to make a highlight video for my daughter who plays soccer. First, when I place the motion tracker box, then click "track", the speed of the video is ridiculously fast. How do I put it at normal speed. Second, the tracker follows her for about 2 seconds. You mentioned that you spend a lot of time "correcting the tracking" but how do you do that?

ynotfish

Senior Contributor Location: N.S.W. Australia Joined: May 08, 2009 02:06 Messages: 9977 Offline

Jul 24, 2016 20:11

Hi Alan -

Does this post help at all? https://forum.cyberlink.com/forum/posts/list/45614.page#239275

If you're trying to track a player in a soccer team, try to place the tracker on a small colour space that's distinctive to that player. i.e. NOT on the shirt!

Quote: How do I put it at normal speed.

Can't be done

Cheers - Tony
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Alan

Newbie Joined: Jul 24, 2016 18:17 Messages: 2 Offline

Jul 25, 2016 09:23

That was perfect, thank you!

YNLExposure

Member Location: Nevada Joined: Sep 25, 2011 18:14 Messages: 65 Offline

Sep 14, 2016 16:34

I'm trying to decide if I should go to Premiere Pro or upgrade to PD14 (now PD15) for motion tracking. Am I reading this right............the speed of the video is faster during Motion Tracking than normal speed? Why in the world?

Anyone out there highlighting football or soccer successfully? Saving time over keyframing?

I have been using the ol Keyframing....slow painful for use in football highlight videos. Was hoping motion tracking would speed things up a lot. PPro doesn't track players on football field very well at all when zoomed back and both teams visible. Guess the future will do better with AI needed to see what we can easily see in videos.