How to trace a ball path.

[bryanc26919725]

Hello. I am trying to trace the path of a golf ball as on the following video. could someone tell me how to do it. Thank you in advance.

Shot Tracer App - YouTube

[P.M.B · Accepted solution]

I'm sure you're aware that what you see in that video was not done in AE or any post production software.

It's done with live motion tracking & satellite GPS.

But to try and do it in AE you either need to use motion tracking on the ball and then parent a shape with an echo effect or a particle emitter to the motion path

or

just create a path by hand and use tirm paths operation to create the tracer.

I would think doing it by hand is the faster workflow since trying to motion track a golfball that's 300 yards from the camera might take some time.

[bryanc26919725]

Thank you for your answer, yes the video that I showed you, is made with an application.

I can draw a line like this

But how to give relief like this?

Thank you

[Roland Kahlenberg]

The Write-on effect will allow you to adjust the width of a stroke. Further, you can use the Expression pick whip to link the the Write-on effect's position property to the motion tracked data.

[P.M.B]

You would have to motion track the ball and then employ one of several possible options parenting something to the motion tracked null.

You cna use the write-on effect like Roland Kahlenberg​ said or you can parent a shape and use echo or even a particle emitter.

However I suspect it will be a problem trying to motion track a white golf ball flying 300yards away from the camera as they quickly become nearly invisible.   This means you would have to manually draw a bezier path and then add the stroke.  Again there are several ways to do this.  I think you can use the Write-On mentioned earlier or RedGiant 3D Stroke​​ if you own it or there is great free preset Path Arrow​

[bryanc26919725]

Thanks for your help