Snap

Snap is a magnetic alignment behavior in non-linear editing software that causes clip edges, the playhead, and markers to "snap" — jump automatically into exact alignment — when they're dragged close to another significant point in the timeline. When snapping is enabled, moving a clip's edge near another clip's edge causes it to snap precisely to that boundary, eliminating the near-miss gaps or tiny overlaps that would occur with purely manual placement. Similarly, the playhead snaps to clip boundaries and markers when dragged near them, making navigation to exact cut points effortless. Snap prevents the accidental frame-gap or micro-overlap that can be invisible in a timeline zoomed out but creates audible or visual artifacts in the final output.

Snapping is typically toggleable (on/off, often via a keyboard shortcut — "S" in Premiere Pro, magnet icon in most applications) because its behavior is contextually appropriate or inappropriate depending on the task. During assembly editing, snap keeps everything aligned and eliminates accidental gaps — extremely useful. During detailed timing adjustments where you want to position a clip at a specific point that isn't a natural snap target (like aligning a visual event to a specific music beat that doesn't fall on a clip boundary), snap's magnetic pull can fight against precise manual placement — turn it off temporarily to place the clip exactly where you want it without having it jump to the nearest snap point.

For producers using NLEs without deep editing expertise, understanding snap helps avoid the most common timing assembly mistakes. When snapping is on and clips are being dragged between positions, they'll click into alignment with adjacent clips automatically — creating a gapless sequence. When snapping is off or a clip is dropped slightly away from its snap target, invisible single-frame gaps or overlaps can create subtle black frames or audio clicks in the output. The practical discipline is to work with snap on during initial assembly and sequence organization, turn it off for fine timing adjustments to specific frame positions, and develop the habit of zooming into the timeline after significant repositioning to visually verify that clips are properly aligned without gaps.