When you add a text label over a face or similar moving object in a video clip, tracking is turned on by default. Tracking matches the movement in the clip to make an object appear to be part of the scene. If you want a text label to stay in a fixed position in your video instead of following movement, you can turn off tracking.
With a video open in the Clips app
, tap the clip with the text label whose tracking you want to turn off.
Tap the text label, tap Disable Tracking, then tap Done.