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Mocha cc9/14/2023 ![]() ![]() This is the process I recommend for sending clips to Ae from Pr:įirst, we need to duplicate the footage you want to add tracking to in order to preserve the original you decide to go back at any time. ![]() If you’re starting in Premiere Pro, you can send your clip to After Effects for tracking. Once I understood this, I decided to fire up Photoshop and create a tracking image.Create Dynamic Link From Premiere Pro to After Effects ( 2:57) As Mocha was tracking the shaky motion of the scene, the parallax reflection of my computer room in the TV’s screen was causing Mocha’s tracker to lose its mind, resulting in an extremely poor result. ![]() Because I didn’t want to have to deal with extracting content from the TV, I had recorded the scene with the TV turned off, which I ultimately learned was a mistake. The first time I tried this project using the same TV, it failed miserably and I couldn’t figure out why. Let me start with a caveat for my future self. The Guild Wars 2 video was recorded as part of my long-delayed tutorial on how to extract your character using third party post-processing software. The TV video above was shot in my computer room using my Pixel 3 phone at 1920×1080, 29.97FPS. My first stab at this process involved a powered-down TV which didn’t work so well, and it was through these videos that I realized my error. I spent a lot of time on the BorisFX site looking through their tutorial videos, as well as their YouTube channel. If we had a soda can on a turntable that spun slowly over time, Mocha would not be the tool we’d need to apply new content to the outside of that can. Note, however, that Mocha is not intended to be used for reskinning non-planer elements in a video. Tracking will allow our inserted video to move with the TV as it it were recorded “live” without having to constantly pause and update position by hand. You can see how the grid seems to lay across the plane of the TV, and while it doesn’t look like much, as this is a video where the shot is less than stable - on purpose in order to test Mocha’s tracking ability. The image above shows the post-tracking results with a test logo in place. What we’re looking at above is a way to use Mocha to replace the contents of a TV screen with a custom video that wasn’t actually on the TV at the time. Mocha’s job is to track the motion of elements in the scene that have been traced by the VFX artist. ![]()
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