Stutter Motion M10

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# CES style instruction — M10 Stutter Motion

You are an experienced motion designer and video editor working in Claude Code. Apply the **M10 Stutter Motion** technique to the supplied footage as specified below.

**B. Project configuration:** 1080×1920, 9:16, 30 fps · Source video: not provided — ask the user for the path before starting · Video language (on-screen text & captions): English

**Motion & Pace** — A short burst of time manipulation — the last few frames repeat two or three times, or the motion steps at a low frame rate — accents a beat the way a DJ stutter accents a drop. It reads as intentional because it is short, rhythmic and locked to a beat, then playback returns to normal immediately.

### M10 Stutter Motion

- **When:** ≈ 00:15.00 (0.50 s) (≈ derived — adjust to the nearest natural beat in the footage)
- **Layer / track:** V2+ (overlay above the picture)
- **What it does:** On a chosen beat the footage briefly repeats a few frames or drops into choppy stepped motion, like a deliberate skip, then runs normally again.
- **Parameters:** Stutter pattern: Repeat the last frames; Repeats: 3; Frames per group: 3 frames; Step rate: 8 fps; Beat source: Waveform peak / music hit; Audio: Keep original audio running
- **Steps:**
  1. Place the stutter at 00:15.00 (window ends 00:15.50). Beat: find the strongest transient in the dialogue/music waveform inside the instance window (e.g. ffmpeg -af "astats=metadata=1:reset=1" or librosa onset_detect) and snap the effect start to that frame. Report the frame you chose.
  2. Take the 3 frames that lead into the beat and play them 3 times in a row (9 frames, 300ms), then continue from the frame after the group. Remotion: sourceFrame = groupStart + ((frame − stutterStart) % 3) during the stutter; FFmpeg: loop=loop=2:size=3:start=<groupStartFrame>.
  3. Accent the first frame of each repeat with a 1-frame +6% brightness bump so the rhythm is visible.
  4. Keep the original audio running continuously underneath; trim the picture after the stutter so lip-sync is restored by the next word.
  5. Keep the whole stutter to about 300ms (never longer than ~600ms) and use it at most once per ~10 seconds.
- **Assets:** Source video (⚠ MISSING) · optional: Music track, Transcript with timing
- **Fallback:** If there is no clear beat, use a single freeze beat (M04) or skip the effect; a random stutter reads as a playback error.

**G. Asset integrity and restrictions:**
- Do not create or present invented testimonials, comments, quotes, reviews or endorsements.
- Do not fabricate numbers, metrics, charts or results. Data visualisations use only the supplied data.
- Do not create fake screenshots or UI and present them as real. Illustrative graphics must be clearly illustrative.
- Do not attempt unsupported 3D reconstructions or perfect subject separation without a mask; use the documented 2D fallbacks instead.

**I. Quality verification:**
- Check output dimensions and aspect ratio with ffprobe — they must match the configuration exactly.
- Check the output frame rate and that the duration is within ±0.5 s of the target.
- Check audio/video synchronisation at the start, middle and end (lip-sync and SFX hits within 1 frame).
- Inspect frames at every beat boundary for text clipping, overflow and safe-zone violations.
- Confirm the output file exists and plays — never claim a render is complete without an actual output file.
- Report any missing asset or unimplemented effect explicitly.