Blackmagic Forum

Hey all,

I've gone through the tracking section in the manual, read a bunch of threads on here and watched some you tube videos and there's just something i'm not getting...

I'm just trying to remove a blemish on a piece of clothing that goes off the screen.

I track a point above the blemish that remains on screen first and then add a paint tool, switch to Stroke and select Clone then go down to Stroke Controls Center X/Y and Connect to my Tracker via ...Here's where I think my mistake probably is...From what I've read it seems I'd need Offset because I'm not tracking the exact point that my tracker is tracking...meaning my clone is not the point I tracked - because that point goes off the screen midway through the shot. I feel like I've tried about all the options in there but I just can't get it to track. I can track fine when my cloned portion is within the track...just not when I'm using another section of the shot as the track.

Thanks all

From your description I guess that the problem is that you are able to track the cloned patch fine, as long as the item you're tracking is on screen, but as soon as you need to change to a different item to track you lose the connection so to speak.

What might help is stop the tracking as soon as the item you're tracking goes off screen and then select the new item to be tracked - in the same tracker/pattern selector - and then use 'append track' this will track the new point but add the newly tracked points relative to the original tracker.

Does that make sense to you?

I'll give that a go...It seems much easier if I could just track a point with the same motion that's a bit above the cloned space and apply the track to that. Is that not possible then?

thanks for taking the time

Sure you can do that. I thought you had already figured that part out.

Maybe this similar topic will help you get started.

viewtopic.php?f=22&t=49230

I'm close...Thank you for your help...Is there a way I can combine all of the strokes and tell them to follow the tracker? Or do I have to assign the tracker to each stroke?

Thank you

Sure. You can select all strokes and then make a 'paint group' out of them. This has a center control as well, so you can connect that to the tracker as well.

Or - as a workaround - create an empty BG tool with a clear alpha channel, use the paint tool on that and then use a transform after that to connect to the tracker. Or as yet another alternative, use the stabilize function inside of the tracker tool to create an image that is still at the point where you want to paint and then destabilize afterwarde. Options aplenty in Fusion.

Thank you, you've been most helpful.