Blackmagic Forum

I have some sample footage from Blackmagic lessons, particularly the VanTrack. I cannot figure out how to get rid of the black x tracking markers on the side of the. I can also not find the tutorial for this footage. Anyone help

Can you provide us a link to where to find it? It's easier to help you if we have some reference as to what you're trying to achieve.

bellclancy wrote:I have some sample footage from Blackmagic lessons, particularly the VanTrack. I cannot figure out how to get rid of the black x tracking markers on the side of the. I can also not find the tutorial for this footage. Anyone help

Basically you need to track the side of the van with the planar tracker, ideally covering the whole side of the van, including the markers. Than you choose a frame where all markers are visible. And you create a freeze frame of that area of the van, using time stretcher node. You than use paint node as clone tool to get rid of the markers.

Generally markers are there to help track white featureless side of the van that would otherwise be harder to track with planar tracker. So you track with markers, than you paint them out and than you put your graphics on top. Usually people use freeze frame method, but there are many ways to do it.

Anyway....

DaVinci Resolve 17 FUSION - Planar Tracker & Paint Tool VFX (Lesson 4)



You can also find project files and PDF guide here : https://www.blackmagicdesign.com/produc ... e/training

The Visual Effects Guide to DaVinci Resolve 18

Download PDF: https://documents.blackmagicdesign.com/ ... 9295613000

If the markers are small enough, I prefer to use the tracking data to drive small masks and then use a pair of linked Erode/Dilate nodes to remove them, as described here: https://bryanray.name/2016/12/10/blackm ... pressions/

This will help to preserve changes in color on the surface, whereas a freeze-frame and paint will very likely need an animated color correct (or several) to maintain the clean surface. The paint method works well for unmoving backgrounds like a greenscreen but not so much for a moving vehicle. (I haven't seen the footage in question, though; I presume it's moving since that's the function of a van! )

Bryan Ray wrote:This will help to preserve changes in color on the surface, whereas a freeze-frame and paint will very likely need an animated color correct (or several) to maintain the clean surface. The paint method works well for unmoving backgrounds like a greenscreen but not so much for a moving vehicle. (I haven't seen the footage in question, though; I presume it's moving since that's the function of a van! )

Yeah. If I recall, I think its just white paint on the side of the van so other than being white, its like green screen, virtually with no distinguishing features and almost no color change as I've seen. Its a beginner tutorial officially offered by black magic so I imagine they wanted to just explain the planar tracker method. Its actually a nice little scene, and realistically could be something people do for movie or TV show or commercial.

The problem of changing color and tone over time is a problem I don't think its present in this example, but its often the case, yes. Requires either more work or different approach.

P.S.

Patch replace tool from Color Page that is available in Fusion is really useful because it heals on the flay and perfect for tracking markers and with now I think in Fusion 19 studio they added object removal to fusion which sadly is missing in Fusion revolve I think. But that could be another way to do something like Content Aware Fill from After Effects of lesser version of Mocha remove/insert temporal lighting matching type thing. That is one thing I wish we had in Fusion.

Wow thanks Guy and Gals. Working out pretty easy once you have the correct info from people that know. I have Studio 19 Beta2 running, so they are as mentioned a few more options to try out. Thanks.