Knowledge Base

Learn how to use every Bitcut feature — step-by-step guides for creating short-form video content on iPhone.

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Face Tracking

Auto-reframe 16:9 to 9:16 with spring-physics face tracking.

What is Face Tracking? Automatically reframe horizontal 16:9 video to vertical 9:16 by following faces — smooth camera movement, no jitter, ready for Shorts and Reels.

Running Face Analysis Start face analysis on a clip to detect faces, scene changes, and generate tracking keyframes for automatic vertical reframing.

Understanding Keyframes & Scenes Keyframes define crop positions, scene changes create instant cuts. Together they auto-reframe 16:9 footage into perfect 9:16 Shorts.

Manual Crop Adjustments Override automatic face tracking by dragging the crop or adding custom keyframes. Lock positions for specific sections or re-analyze to reset.

Multi-Face Scenes Bitcut scores faces by size, position, and consistency to choose the best tracking target. Override manually by dragging the crop preview.