video-speed-adjustment

What this skill does

# 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. C