ffmpeg-transitions-effects

## CRITICAL GUIDELINES

### Windows File Path Requirements

**MANDATORY: Always Use Backslashes on Windows for File Paths**

When using Edit or Write tools on Windows, you MUST use backslashes (`\`) in file paths, NOT forward slashes (`/`).

### Documentation Guidelines

**NEVER create new documentation files unless explicitly requested by the user.**

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## Quick Reference

| Transition | Command |
|------------|---------|
| Crossfade | `[0:v][1:v]xfade=transition=fade:duration=1:offset=4[v]` |
| Dissolve | `xfade=transition=dissolve:duration=1:offset=4` |
| Wipe left | `xfade=transition=wipeleft:duration=1:offset=4` |
| Circle open | `xfade=transition=circleopen:duration=1.5:offset=4` |
| Slide left | `xfade=transition=slideleft:duration=1:offset=4` |
| Fade in/out | `-vf "fade=t=in:d=1,fade=t=out:st=9:d=1"` |
| Audio crossfade | `[0:a][1:a]acrossfade=d=1[a]` |

| Offset Formula | For N clips with transition T |
|----------------|-------------------------------|
| offset1 | `clip1_duration - T` |
| offset2 | `2*duration - 2*T` |
| offsetN | `N*duration - N*T` |

## When to Use This Skill

Use for **video transition workflows**:
- Joining clips with professional transitions
- Creating slideshows from images
- Adding fade in/out effects
- Multi-clip sequence editing
- Custom transition expressions

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# FFmpeg Transitions and Effects (2025)

Complete guide to video transitions, crossfades, and creative effects using FFmpeg.

## Transition Overview

### Available Methods

| Method | Use Case | Complexity |
|--------|----------|------------|
| xfade filter | Between two clips | Medium |
| fade filter | Single clip in/out | Simple |
| blend filter | Frame blending | Simple |
| overlay + alpha | Custom transitions | Advanced |

### xfade Transition Types

FFmpeg's xfade filter supports 40+ built-in transitions:

| Category | Transitions |
|----------|-------------|
| Fades | fade, fadeblack, fadewhite, fadegrays |
| Wipes | wipeleft, wiperight, wipeup, wipedown, wip