I generated 10 cinematic clips of a pit crew, a driver, and a race: walk-in, wheel change, headset on, cockpit, launch, overtake, final lap, finish line.
I dropped them into invideo Editor and asked the timeline agent to build the full sequence, cuts, music, and sound.
Then I described the effect I wanted: bright highlights stretching into directional light trails on the launch and final lap.
The agent built it as a custom shader on the editable timeline.
I tuned the [trail length, direction, threshold, and mix] until it felt right.