Video Speed Adjustment

Adjust video playback speed using each::sense. This skill enables speed manipulation for creative effects including slow motion, time-lapse, hyperlapse, speed ramping, reverse playback, and frame interpolation for ultra-smooth slow-mo.

Features

Slow Motion: Reduce playback speed (0.25x to 0.75x) for dramatic effect
Speed Up: Accelerate video (1.5x to 4x) for quick recaps
Time-Lapse: Extreme speed increase (8x to 20x) for long processes
Hyperlapse: Stabilized time-lapse with motion smoothing
Frame Interpolation: AI-generated frames for smooth slow motion
Speed Ramp: Variable speed within a single clip
Reverse Playback: Play video backwards
High FPS Output: 60fps or 120fps output for smooth playback

Quick Start

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Speed up this video to 2x playback speed"}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/my-video.mp4"
  }'

Speed Adjustment Reference

Effect	Speed Factor	Use Case
Extreme Slow-Mo	0.25x	Sports highlights, action details
Slow Motion	0.5x	Dramatic moments, product reveals
Slight Slow	0.75x	Subtle emphasis
Normal	1x	Original speed
Slight Fast	1.5x	Skip boring parts
Fast Forward	2x	Quick overview
Very Fast	4x	Process summaries
Time-Lapse	10x-20x	Construction, cooking, travel

Use Case Examples

1. Speed Up Video 2x

Double the playback speed for a quick recap or to fit content into a shorter duration.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Speed up this video to 2x playback speed. Keep the audio pitch corrected."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/tutorial-video.mp4"
  }'

2. Slow Motion 0.5x

Create a half-speed slow motion effect for emphasis and drama.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Create a 0.5x slow motion version of this video. Apply frame interpolation for smooth playback without stuttering."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/action-clip.mp4"
  }'

3. Time-Lapse Effect (10x Speed)

Transform regular footage into a time-lapse for showing long processes quickly.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Create a 10x time-lapse effect from this video. This is footage of a sunset, compress the 30 minute recording into a 3 minute clip. Maintain smooth motion and remove audio."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/sunset-footage.mp4"
  }'

4. Smooth Slow Motion with Frame Interpolation

Use AI frame interpolation to create buttery-smooth slow motion from standard 30fps footage.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Create a smooth 0.25x slow motion video using AI frame interpolation. The source is 30fps footage - interpolate to 120fps first, then slow down to 0.25x for silky smooth playback. This is a skateboard trick that needs to look cinematic."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/skateboard-trick.mp4"
  }'

5. Speed Ramp (Variable Speed)

Create dynamic speed changes within a single clip - start slow, speed up, then slow down again.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Apply a speed ramp effect to this video: Start at 0.5x slow motion for the first 2 seconds (the jump), then ramp up to 2x speed for the middle section (the landing and walk), then back to 0.5x for the final trick. Create smooth transitions between speed changes."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/parkour-clip.mp4"
  }'

6. Reverse Video

Play the video backwards for creative effects or reveals.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Reverse this video so it plays backwards. This is a glass breaking - I want to show it reassembling. Keep the audio reversed as well for the effect."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/glass-breaking.mp4"
  }'

7. Hyperlapse Effect

Create a stabilized, smooth hyperlapse from handheld footage with speed increase.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Create a hyperlapse effect from this walking footage. Speed up to 8x while applying stabilization and motion smoothing. This is a walk through a city street - make it look like a professional hyperlapse with smooth camera movement."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/city-walk.mp4"
  }'

8. Slow Motion Sports Highlight

Create dramatic slow motion from sports footage with emphasis on key moments.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Create a slow motion sports highlight from this basketball footage. Apply 0.3x slow motion with frame interpolation for smooth playback. Focus on making the dunk look dramatic and cinematic. Output at 60fps for smooth viewing."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/basketball-dunk.mp4"
  }'

9. Fast Forward Boring Parts

Speed up specific sections while keeping others at normal speed.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "This is a cooking tutorial video. Speed up the waiting/cooking parts to 4x (like when the food is just sitting in the oven or boiling) but keep the active cooking instruction parts at normal 1x speed. Make the speed transitions smooth."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/cooking-tutorial.mp4"
  }'

10. Cinematic Slow-Mo with 60fps Output

Create film-quality slow motion with high frame rate output for professional results.

bash

curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Create a cinematic slow motion video at 0.4x speed. Use AI frame interpolation to generate smooth intermediate frames and output at 60fps. This is a fashion model walking on a runway - add slight motion blur for a filmic look. The result should look like it was shot with a high-speed camera."}],
    "model": "eachsense/beta",
    "stream": true,
    "mode": "max",
    "video_url": "https://example.com/runway-walk.mp4"
  }'

Multi-Turn Speed Adjustment Workflow

Use

session_id

to iterate on speed adjustments:

bash

# Initial speed adjustment
curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Create a slow motion version of this video at 0.5x speed"}],
    "model": "eachsense/beta",
    "stream": true,
    "session_id": "speed-project-001",
    "video_url": "https://example.com/action-scene.mp4"
  }'

# Request further adjustment
curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "The slow motion looks good but I want it even slower - make it 0.25x with frame interpolation for smoothness"}],
    "model": "eachsense/beta",
    "stream": true,
    "session_id": "speed-project-001"
  }'

# Add additional effect
curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -H "Accept: text/event-stream" \
  -d '{
    "messages": [{"role": "user", "content": "Now add a speed ramp at the end - gradually speed up from 0.25x to 2x over the last 3 seconds"}],
    "model": "eachsense/beta",
    "stream": true,
    "session_id": "speed-project-001"
  }'

Best Practices

Slow Motion

Source Frame Rate: Higher source FPS (60fps, 120fps) produces better slow motion
Frame Interpolation: Use AI interpolation for smooth results from 30fps sources
Output FPS: Request 60fps output for smooth playback on modern displays
Avoid Extreme Slow-Mo: Going below 0.25x may produce artifacts

Speed Up / Time-Lapse

Audio Handling: Remove audio for extreme speed-ups (4x+) or use pitch correction
Motion Blur: Add slight motion blur for smoother fast-forward appearance
Stabilization: Apply stabilization for handheld footage before speed-up

Speed Ramps

Smooth Transitions: Request gradual speed changes over 0.5-2 seconds
Mark Key Moments: Describe which parts should be slow vs fast
Audio Sync: Consider how speed changes affect audio/music sync

Quality Tips

Mode Selection: Use
```
max
```
for final exports,
```
eco
```
for previews
Resolution: Higher resolution sources produce better results
Compression: Request high bitrate output for quality retention

Mode Selection

Mode	Best For	Speed	Quality
`max`	Final exports, client deliverables, portfolio work	Slower	Highest
`eco`	Quick previews, testing speed values, drafts	Faster	Good

Prompt Tips for Speed Adjustment

When requesting speed adjustments, include these details:

Speed Factor: Specify exact multiplier (0.5x, 2x, 10x)
Frame Interpolation: Request if needed for smooth slow motion
Output FPS: Specify desired frame rate (30fps, 60fps, 120fps)
Audio Handling: Keep, remove, pitch correct, or reverse
Transitions: For speed ramps, describe how transitions should feel
Quality Priority: Mention if smoothness or detail is more important

Example Prompt Structure

"[Speed effect] this video to [speed factor].
[Frame interpolation requirement].
Output at [fps] for [use case].
[Audio handling instruction].
[Additional quality requirements]."

Error Handling

Error	Cause	Solution
`Failed to create prediction: HTTP 422`	Insufficient balance	Top up at eachlabs.ai
Timeout	Long video processing	Set client timeout to minimum 10 minutes
Choppy slow motion	No frame interpolation	Request AI frame interpolation
Audio pitch issues	Speed change without correction	Request pitch correction or remove audio

Technical Notes

Client Timeout: Set HTTP client timeout to minimum 10 minutes for video processing
Video Length: Longer videos take proportionally more time to process
Frame Interpolation: Adds processing time but dramatically improves slow motion quality
Maximum Speed: Practical range is 0.1x to 20x depending on source footage

Related Skills

```
each-sense
```
- Core API documentation
```
video-stabilization
```
- Stabilize shaky footage
```
video-editing
```
- General video editing capabilities
```
video-generation
```
- Generate new video content

video-speed-adjustment

NPX Install

Tags

SKILL.md Content

Video Speed Adjustment

Features

Quick Start

Speed Adjustment Reference

Use Case Examples

1. Speed Up Video 2x

2. Slow Motion 0.5x

3. Time-Lapse Effect (10x Speed)

4. Smooth Slow Motion with Frame Interpolation

5. Speed Ramp (Variable Speed)

6. Reverse Video

7. Hyperlapse Effect

8. Slow Motion Sports Highlight

9. Fast Forward Boring Parts

10. Cinematic Slow-Mo with 60fps Output

Multi-Turn Speed Adjustment Workflow

Best Practices

Slow Motion

Speed Up / Time-Lapse

Speed Ramps

Quality Tips

Mode Selection

Prompt Tips for Speed Adjustment

Example Prompt Structure

Error Handling

Technical Notes

Related Skills