Download JCSS

The first public build of JCSS, a live studio for recording and streaming: cameras, screens, graphics and audio, mixed and recorded already edited. Early software: expect rough edges, and tell us about them in Issues.

Install

• Mac (Apple Silicon, macOS 15 or later): download JCSS-0.1.0.dmg, open it, drag JCSS to Applications. Signed and notarized. After this it updates itself (JCSS › Check for Updates…).
• Windows (10 or 11, 64-bit): download JCSS-0.1.0-windows-x64.zip, unzip it anywhere, run JCSS.exe. Not code-signed yet, so Windows may say "Windows protected your PC": choose More info › Run anyway.

What's in it

• Set up by talking: on first run, pick the AI you already use (Claude Code or Codex) and describe what you're making. It looks at your cameras and mics and builds your scenes while you watch.
• Scenes and layers: cameras, screens, images and guest seats; move, resize, crop, round, fade and rotate each one; add, duplicate, rename and reorder scenes.
• Motion: scenes that move (shared layers glide to their new place), and layers and graphics that slide, zoom, pop, rotate or wipe in.
• Graphics: lower thirds and title cards from templates, with words you change live.
• Audio: as many microphones and music beds as you need, each with its own fader; music ducks under speech.
• Recording: the program plus a clean file per camera and a track per mic.
• Editor (Mac): make a short video from images, clips and a brief, then change it by asking.
• Agents: everything is plain files and an MCP server, so Claude Desktop and other agents can drive the studio.