FFmpeg WASM Media Transformer

This service transforms videos using FFmpeg compiled to WebAssembly, running on Cloudflare Workers.

Usage

To transform media, use the following URL pattern:

/transform/{type}/{mediaKey}?param1=value1¶m2=value2

Transformation Types

• video - Transforms a video (resize, crop, trim)
• frame - Extracts a single frame from a video
• spritesheet - Creates a spritesheet of frames from a video

Common Parameters

• width - Output width in pixels
• height - Output height in pixels
• fit - How to resize (contain, cover, scale-down)
• time - Timestamp to start from (e.g., 5s, 1m)
• duration - Duration of output (for video)
• quality - Output quality (low, medium, high)
• audio - Include audio (true/false)
• format - Output format for images (jpg, png)

Examples

/transform/video/example.mp4?width=640&height=360&fit=contain

/transform/frame/example.mp4?time=30s&width=1280&height=720&format=png

/transform/spritesheet/example.mp4?time=0s&duration=60s&columns=5&rows=4&width=160&height=90