Pellicule

Deterministic video rendering with Vue.

Write Vue components. Render videos.

Installation

npm install pellicule

Quick Start

1. Create a video component

<script setup>
import { useFrame, interpolate, Easing } from 'pellicule'
import { computed } from 'vue'

const frame = useFrame()
const opacity = computed(() =>
  interpolate(frame.value, [0, 30], [0, 1], { easing: Easing.easeOut })
)
</script>

<template>
  <div class="video" :style="{ opacity }">
    <h1>Hello, Pellicule!</h1>
  </div>
</template>

<style>
.video {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0a0a0f;
  color: white;
}
</style>

2. Render it

npx pellicule Video.vue -d 90 -o hello.mp4

CLI Options

Flag	Description	Default
-o, --output	Output file path	./output.mp4
--preset	Output preset (mp4, webm)	mp4
--quality	Output quality (draft, standard, high)	standard
-d, --duration	Duration in frames	90
-A, --duration-from-audio	Use the audio file length as total duration	false
-f, --fps	Frames per second	30
-w, --width	Video width	1920
-h, --height	Video height	1080
-a, --audio	Audio file to mux into the export	none

Example output commands:

# Default MP4 (H.264 + AAC)
npx pellicule Video.vue

# WebM output
npx pellicule Video.vue --preset webm

# Higher-quality MP4
npx pellicule Video.vue --quality high

# Let the soundtrack define total duration
npx pellicule Karaoke.vue --audio song.mp3 --duration-from-audio

API

Composables

• useFrame() - Get the current frame number as a reactive ref
• useVideoConfig() - Access video configuration (fps, duration, dimensions)

Animation Utilities

• interpolate(frame, inputRange, outputRange, options) - Map values between ranges
• sequence(frame, steps) - Chain multiple animations together
• secondsToFrames(seconds, fps) - Turn audio or lyric timings into whole frames
• framesToSeconds(frames, fps) - Convert frame counts back to seconds
• Easing - Built-in easing functions: linear, easeIn, easeOut, easeInOut

Audio-Aware Workflow

• Add audio to defineVideoConfig() or pass --audio <file> to mux a soundtrack into the final export.
• Add --duration-from-audio when you want Pellicule to derive durationInFrames from the probed audio length.
• pellicule dev keeps preview audio in sync with play, pause, step, and scrub controls when an audio track is present.

How It Works

1. Vite bundles your Vue component
2. Playwright renders each frame in a headless browser
3. FFmpeg encodes the frames into the selected output format

The rendering is deterministic - the same component produces the exact same video every time.

Requirements

• Node.js 18+
• FFmpeg installed and in PATH
• Vue 3.x

Documentation

https://docs.sailscasts.com/pellicule

License

MIT