Summary of how to blur something out in DaVinci Resolve:
- Isolate the part of the clip that has the thing you want to blur out
- Switch to the Color page and find the Window options
- Add a rectangle window and resize it so it covers the thing you want to blur
- Switch to the Tracker options and press Track Forward to record the movement of the thing you’re blurring
- Switch to the Blur options and increase the radius to a value such as 2 (the higher the number, the greater the blur)
If the thing you’re tracking moves off screen you might need to manually fine-tune the tracking data. To do that:
- In the Tracker options switch from Clip to Frame mode
- Anytime you move your rectangle window in Frame mode, it will add a new keyframe recording that movement