Speed Ramp Video — The Edit That Makes Every Moment Feel Cinematic

Use Cases

1. Action Sports — Impact Frame Slow-Mo (any footage) — A skateboarder lands a kickflip, a surfer drops into a wave, a climber tops out a boulder, a cyclist hits a jump. The action happens in 0.3 seconds — too fast for the eye to appreciate. NemoVideo: identifies the peak action frame (the exact moment of contact, catch, or maximum extension), applies a speed ramp (1.5x approach → snap to 0.12x on the impact frame → hold slow-mo for 1-2 seconds → snap to 1.5x for the aftermath), generates AI intermediate frames for buttery-smooth slow-motion (standard 30fps footage becomes effectively 240fps during the ramp), adds a subtle bass impact sound effect on the slow-mo snap point, and optionally applies a brief zoom-in on the impact frame for additional emphasis. A fraction-of-a-second action becomes a 2-second visual masterpiece that the viewer can actually appreciate.

2. Beat-Synced Velocity Edit — Music-Driven Speed Control (30-90s) — The viral editing format: every speed change in the video is synchronized to the music. Bass drop = snap to slow-mo. Build-up = speed ramp to fast. Snare hit = cut. Hi-hat = micro-ramp. NemoVideo: analyzes the music track's complete beat structure (bass positions, snare positions, hi-hats, drops, builds, breakdowns), maps speed changes to beat positions (slow-mo moments assigned to drops, fast-forward assigned to build-ups, transitions assigned to snare hits), applies mathematically smooth speed curves between each tempo (not hard jumps — S-curve transitions that feel organic), and generates AI frames for every slow-motion section. The result is a video where visual rhythm and musical rhythm are identical — the hypnotic synchronization that makes viewers replay velocity edits obsessively.

3. Gaming Montage — Kill-Frame Velocity (30-120s) — The gaming community's signature edit: gameplay at 2-3x speed during travel and setup, snapping to 0.1-0.15x on the exact frame of a headshot, elimination, or clutch moment, then ramping back to fast for the next setup. NemoVideo: detects kill/elimination moments through visual analysis (kill feed indicators, damage numbers, elimination graphics), places the slow-mo snap precisely on the impact frame (not 3 frames early, not 2 frames late — the exact frame), applies the speed curve that gaming audiences expect (instantaneous snap into slow-mo, gradual ramp out), adds screen effects at the snap point (optional: brief zoom, color shift, screen shake), and exports in both 16:9 (YouTube) and 9:16 (TikTok) with beat-synced editing. The velocity edit style that defines gaming content.

4. Wedding/Event — Cinematic Moments (any length) — A wedding has 3-4 moments that deserve cinematic speed treatment: the first look, the veil toss, the first dance dip, the confetti exit. NemoVideo: identifies these peak emotional and visual moments, applies elegant speed ramps (gentle deceleration into slow-mo rather than aggressive snaps — matching the romantic tone), generates smooth slow-motion with particular attention to fabric movement (veil, dress train) and confetti/petal physics, layers appropriate music that complements the speed changes, and creates individual moment clips alongside a complete highlight reel. Wedding footage with the cinematic language that couples have seen in film and want in their own memories.

5. Product Reveal — Dramatic Unboxing (15-60s) — A product unboxing or reveal benefits from speed ramp emphasis: fast through the packaging, slow-motion on the reveal moment, normal speed for the first interaction. NemoVideo: speeds through preparation and packaging (2-3x — compressing the boring parts), snaps to slow-motion at the reveal moment (the lid lifting, the product emerging, the first light catching the surface — 0.2x), holds the slow-mo for the product hero shot (letting the viewer absorb the design, the materials, the details), ramps back to normal for the hands-on interaction, and adds sound design (satisfying unboxing sounds amplified during slow-mo). The product reveal that makes viewers feel like they are experiencing the moment themselves.

How It Works

Step 1 — Upload Video

Any footage at any frame rate. NemoVideo generates intermediate frames for smooth slow-motion regardless of source frame rate. High frame rate sources (60fps, 120fps, 240fps) produce even smoother results.

Step 2 — Define Speed Ramp Points

Automatic (AI detects peak moments), manual (specify timestamps), beat-synced (provide music track), or template (apply a preset speed curve pattern).

Step 3 — Generate

curl -X POST https://mega-api-prod.nemovideo.ai/api/v1/generate \
  -H "Authorization: Bearer $NEMO_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "skill": "speed-ramp-video",
    "prompt": "Apply speed ramps to a 2-minute skateboarding video. Speed map: 0:00-0:06 normal approach (1x). 0:06-0:07 ramp to 1.5x (compress approach). 0:07-0:12 snap to 0.12x on the kickflip catch frame (AI frame generation for smooth 240fps-equivalent). 0:12-0:18 ramp back to 1.5x (skate to next spot). 0:18-0:24 snap to 0.1x on rail grind entry frame. 0:24-0:30 hold 0.15x through the grind. 0:30-0:32 snap to 2x on landing. Beat-sync all snap points to the phonk track bass drops. Add bass impact sound effect at each slow-mo snap. Add 150%% zoom on each impact frame, snapping back in 3 frames. Export 16:9 + 9:16.",
    "speed_ramps": [
      {"at": "0:07", "from": 1.5, "to": 0.12, "curve": "snap", "hold": "0:07-0:12", "ai_frames": true},
      {"at": "0:18", "from": 1.5, "to": 0.1, "curve": "snap", "hold": "0:18-0:24", "ai_frames": true},
      {"at": "0:24", "from": 0.15, "to": 0.15, "hold": "0:24-0:30"},
      {"at": "0:30", "from": 0.15, "to": 2.0, "curve": "snap"}
    ],
    "beat_sync": "phonk-bass-drops",
    "effects": {
      "sound": "bass-impact-on-snap",
      "zoom": {"amount": "150%%", "recovery_frames": 3}
    },
    "ai_frame_generation": true,
    "formats": ["16:9", "9:16"]
  }'

Step 4 — Preview at Full Speed with Audio

Speed ramps must be experienced with audio to evaluate properly. Watch at full speed with music. Verify: slow-mo hits the correct impact frame, speed transitions feel smooth (not stuttering), beat sync is precise, and the overall rhythm creates visceral engagement. Adjust snap points and re-render.

Parameters

Output Example

{
  "job_id": "spdrmp-20260329-001",
  "status": "completed",
  "source_duration": "2:08",
  "output_duration": "2:42",
  "speed_ramps_applied": 4,
  "speed_range": "0.1x — 2.0x",
  "ai_frames_generated": 1847,
  "beat_syncs": 4,
  "outputs": {
    "landscape": {"file": "skate-speedramp-16x9.mp4", "resolution": "1920x1080"},
    "vertical": {"file": "skate-speedramp-9x16.mp4", "resolution": "1080x1920"}
  }
}

Tips

1. The impact frame must be surgically precise — A speed ramp that hits slow-mo 3 frames too early or 2 frames too late misses the moment entirely. The viewer sees the build-up in slow motion instead of the impact. NemoVideo's AI frame detection identifies the exact peak frame — the frame of maximum visual drama — and places the slow-mo anchor precisely.
2. Snap curves create drama; ease curves create elegance — Instant speed change (snap) feels aggressive and exciting — perfect for gaming, sports, and action. Gradual speed change (ease/S-curve) feels smooth and cinematic — perfect for weddings, products, and narrative content. Match the curve type to the content's emotional register.
3. AI frame generation makes any camera a high-speed camera — Standard 30fps footage contains 30 frames per second. At 0.1x slow-motion, that is 3 frames per second — unwatchably choppy. AI frame generation creates the missing 27 frames per second, producing smooth slow-motion equivalent to 300fps from standard footage.
4. Beat-synced speed ramps create addictive viewing — When slow-mo snaps align with bass drops and fast sections align with build-ups, the visual and musical rhythms synchronize. This dual-channel synchronization creates a visceral satisfaction that single-channel content cannot match. Beat-synced velocity edits have the highest replay rates on social media.
5. Less is more with speed ramps — A video where every second has a speed change becomes exhausting and loses the technique's impact. Speed ramps are dramatic because they contrast with normal speed. 3-5 well-placed speed ramps in a 60-second video create impact. 15 speed ramps in 60 seconds create nausea.

Output Formats

Related Skills

• ai-video-speed-changer — Global speed changes
• ai-video-zoom — Zoom snap effects
• ai-video-effects — Visual impact effects
• ai-video-highlight-maker — Auto-detect peak moments

Frequently Asked Questions

Does source frame rate matter? — Higher source frame rate produces smoother results. 60fps sources produce excellent slow-motion at 0.25x without AI frame generation. 30fps sources rely on AI frame generation for speeds below 0.5x — NemoVideo's AI frames are visually indistinguishable from real captured frames at normal viewing speeds. 120fps and 240fps sources produce cinematic-grade slow motion at extreme speeds.

Can I apply speed ramps to existing edited videos? — Yes. Upload any video — even previously edited content — and NemoVideo applies speed ramps at specified timestamps or auto-detected peak moments. The speed ramps layer on top of existing edits, adding dramatic emphasis to an already-edited piece.

What is the slowest speed supported? — NemoVideo supports speeds down to 0.05x (20x slower than real-time). At extreme slow speeds, AI frame generation is essential for smooth playback. A 1-second moment at 0.05x becomes a 20-second cinematic sequence revealing detail invisible at normal speed.