webcodecs

JS Expert Week 8.0 - 🎥Pre processing videos before uploading in the browser 😏

Open-source, local-first video editor where creators and AI agents edit the same real timeline.

Pure re-encoding of an mp4-h264 video file with the web APIs as well as in-depth description of how it works.

Record a video in the browser or directly on the File System from a canvas region (2D/WebGL/WebGPU) as MP4, WebM, MKV, MOV, GIF, PNG/JPG Sequence using WebCodecs and Wasm when available.

High-performance asset optimization for FoundryVTT. Convert scene backgrounds to WebP and audio to OGG Opus directly in your browser using multi-threaded WebCodecs for faster load times and less bandwidth.

Nearcade is an open source game streaming platform. It functions as a self hosted alternative to Steam Remote Play Together, allowing you to share your screen and play local couch co-op multiplayer games with friends over the internet with low latency

Browser-based, hardware-accelerated video upload optimization

Real-time 3D dioramas rendered as pixel art in the browser, with time of day, weather, procedural sound and 60 fps MP4 export. three.js, no build step.

Type an idea, get a finished motion-graphics video. Top Western + Chinese image models (Seedream, Qwen-Image, Kling, FLUX, GPT Image, Imagen...), bring your own API keys.

Get a codec parameter string (like 'avc1.4d002a') from human readable options (like { name: 'Main', level: '4.2' }) and back to a descriptive name ('AVC Main Profile Level 4.2').

Self-hosted trip planner that turns itineraries into map-animated travel videos. 自部署旅行规划与影片生成工具。

Turn photos into animated ASCII portraits in your browser; export PNG or looping WebM.

Turn any photo into text art you can paste into Instagram, X and Telegram. Runs in your browser.

Video scrubbing with WebCodecs

WebCodecs Opus Recorder/Media Source Extensions Opus EncodedAudioChunk Player

Real-time datamosh library via WebCodecs. Inspired by hydra-datamosh by Empyflash.

Plugin-free Chrome extension to view Dahua NVR/DVR/IP cameras — live view + recordings, directly over your network. No plugin, no server.

Render HTML canvas animations to MP4 fast on a Mac, with WebCodecs hardware H.264 in headless Chrome (8.4 min 1080p60 in 161 s instead of 426 s). MCP server for Claude Code, Codex and Cursor. Ships 66 code-made film styles from LemoLab's lemo-opuscar. Free for non-commercial use.

WebRTC Video Encoder <--> WebCodecs VideoDecoder

Transparent AI-video sprites for web games: Rust encoder, in-browser Studio, ~15 KB WebGL2 runtime + PixiJS adapter. Play Rift Warden ↗