Find the edits in a 4-shot tutorial clip

Cuts and editsTutorialTool missed

0:11CC-BY-SA-4.0 · ARamadan-WMF

Proof frames

Click a frame to seek

Tool calls

2 calls · agentic-video 0.3.1

detect_cutsimac · 676 ms

Arguments

{
  "source": "$CLIP"
}

Result

{
  "ok": true,
  "data": {
    "cuts": [
      {
        "timestamp_sec": 8.52,
        "score": 0.169058,
        "kind": "cut"
      }
    ],
    "total": 1
  }
}

frame_atimac · 641 ms

Arguments

{
  "source": "$CLIP",
  "time_sec": 2.35
}

Result

{
  "ok": true,
  "data": {
    "frame_time_sec": 2.32,
    "width": 640,
    "height": 1386,
    "source_width": 640,
    "source_height": 1386,
    "crop": null,
    "scale": 1,
    "file_path": "<cache>/16516fca0737f0d48c54/frame_at/frame_at_06f9c84d3fc211bc.png",
    "tool_file": {
      "_tag": "ToolFile",
      "name": "frame_at_06f9c84d3fc211bc.png",
      "mimeType": "image/png",
      "encoding": "base64",
      "data": "<328560 base64 chars dropped>",
      "byteLength": 246419
    }
  }
}

Question and answer

Question: Where are the edits in this video? Which are hard cuts and which are fades?
Answer: detect_cuts lists 1 edits: 8.52 s is a hard cut.

Tool returned: [8.52]
Truth: [2.34,5.84,8.52]

Check failedprecision 1.00 (min 1), recall 0.33 (min 1), tolerance 0.5s

How it was checked

Truth from: constructed
Fixed at: 2026-10-30 19:36

Planted by this recipe before any tool ran: ffmpeg cut 4 single-shot pieces from the source (no shot change by ffmpeg scene score above 0.2 within 0.5 s of a piece's edges; piece starts in the source 51.08, 23.4, 72.2, 89.96 s, piece lengths 2.84, 4, 2.68, 2.84 s, starts at least 8 s apart) and joined them in order with hard cuts and one 1 s cross-fade (xfade) after piece 1. The truth is the planted edit times 2.34 s (fade), 5.84 s (hard cut), 8.52 s (hard cut): each hard cut at its join, and the fade's middle. The calls are detect_cuts with its default threshold, then frame_at a quarter frame after the first planted edit (a fixed rule).

A script joined 4 pieces of one public tutorial clip with hard cuts and one 1 s fade, so this tests detection on a known constructed edit, not on a professionally cut film, and the audio was removed.

Try it yourself

Using agentic-video, find the edits in my video (the file I attach or name). Use detect_cuts to list every cut time, then check the first edit with frame_at. Tell me which edits are hard cuts and which are fades, with the times.

Get the .mcpb file and open it in Claude Desktop.
Or: pip install agentic-video

Clip and licence

Licence: CC-BY-SA-4.0
Author: ARamadan-WMF
Source: commons.wikimedia.org

This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.