Side by side. Overlay. Ghost outline.
Compare up to 4 lifts simultaneously. Side-by-side shows videos in sync. Overlay blends them with an opacity slider. Ghost outline shows skeleton silhouettes from one lift over another.
Set sync anchor points so a 3-second squat lines up with a 4-second squat at the right phase. Save comparison pairs to revisit. Recent comparisons appear at the top for quick access.