Scene Detection

Finds where a video cuts, and hands back the pieces between the cuts.

The scene detection node finds scene boundaries (cuts) in a video using optical-flow analysis, and emits the resulting segments. Each run replaces the whole segment set for the asset.

Kind

scene-detection

Applies to

Video only

Input ports

media

Output ports

scenes — a single timeline covering the clip, not one element per scene. The segments live inside it

Requirements

OpenCV / video4j native runtime (optical-flow analysis). CPU-bound; decoding long videos is heavy.

Persists to

asset_segment_comp (whole-set replace) + asset_node_result ledger

The detector is OpticalFlowSceneDetector. Because segments are a whole-set replace, a shorter re-run deletes the surplus rows.

Configuration

Figure 1. The node’s settings in the pipeline editor

No custom options beyond the common node flags.

Seeing it run

Turn on Debug Mode and every node keeps what it produced, on the card itself. Below is a real run of this node over pexels-jack-sparrow-5977265.mp4.

The strip on the card lists what each output port carried — scenes.

Use Cases

Chaptering — split a video into navigable scenes.
Keyframe / per-scene thumbnails — generate a preview per scene.
Targeted analysis — run heavier nodes (faces, captioning) once per scene instead of per frame.

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