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This interaction demonstrates Instagram's video editor onboarding and preview resizing. It begins with an onboarding overlay featuring an animated hand icon looping a vertical drag gesture, accompanied by a tooltip and a 'Got it' button. Upon dismissing the tooltip, the user can hold and drag the boundary of the video preview. The preview container fluidly morphs and scales between a compact timeline view and a full-screen editor view, utilizing responsive spring physics that snap the container into place once the drag threshold is crossed.
