A free OBS alternative that runs in your browser

OBS Studio is brilliant, and it's also a program to download, set up and keep updated, with plugins and web services added for alerts, guests and captions. flint is the same idea, scenes made of sources, mixed and sent to Twitch, running in a browser tab instead.

What works the way you know from OBS

• Bring your OBS scenes: Import from OBS reads an exported scene collection, with its sources, filters and layout.
• Scenes and sources: cameras, screen, window and tab capture, images, videos, text, colour, slideshows, nested scenes and groups, dragged, cropped and rotated on a canvas.
• An audio mixer: faders in dB, mute, monitoring, sync offsets, noise gate, compressor, EQ and ducking.
• Filters: chroma key, colour correction, LUTs, masks, blur, sharpen and scroll, plus background removal without a green screen.
• Transitions: cut, fade, slide, swipe, zoom, luma wipes, stingers and a move transition, plus show / hide transitions on single items.
• Blend modes (additive, screen, multiply…) and scale filtering (pixel-sharp for retro games, bicubic) per item.
• Media: images, videos, VLC-style video playlists, slideshows and colour sources.
• Studio mode, hotkeys, projectors and multiview, screenshots, a replay buffer, recording, and a vertical canvas for Shorts and TikTok.
• Stream Deck and MIDI straight from the browser, and an obs-websocket-compatible bridge (flint-link) for tools that speak to OBS.

What you get without plugins

• Twitch alerts, goals and Hype Trains, chat on screen, an emote wall, end credits and a countdown: no StreamElements or Streamlabs overlay to paste in.
• Guests from a link: a co-host joins with their camera and mic, waits in a green room and hears the stream without themselves.
• Your phone as a camera by scanning a QR code.
• Live captions, worked out on your own computer.
• Auto-Shorts: the moments chat goes wild, clipped and turned into vertical videos with captions when you stop.
• The same setup on any computer: scenes back up encrypted, so you can open flint anywhere and carry on.

When OBS is still the better choice

flint streams to Twitch and to any service that takes WHIP (WebRTC); OBS also speaks RTMP to everything else. OBS captures games through a hook, where a browser shares a screen or a window. And OBS has years of plugins. If you rely on those, keep OBS: flint is for when you'd rather not install anything, stream from a computer you can't install on (a school or work machine, a Chromebook), or want guests, alerts and captions built in.

Questions

Is flint really free?

Yes: no account, no subscription and no watermark.

Does my video go through flint's servers?

No. It goes straight from your browser to Twitch over WebRTC. flint's server only keeps your backup, encrypted in your browser first.

Can I import my OBS scenes?

Yes: flint menu › Import from OBS reads an OBS scene collection (Scene Collection › Export) with its scenes, sources, filters and layout, and lists anything that has no flint equivalent.

Which browser do I need?

Chrome or Edge on a computer does everything. Firefox and Safari can stream your camera, mic and screen too.

Guides

• Coming from OBS: import your scenes: Bring an OBS Studio scene collection into flint: scenes, sources, filters and layout.
• Your first stream, step by step: From an empty page to live on Twitch in about five minutes.
• Scenes: Different screens for different moments, like 'Starting soon' or 'Gaming'.
• Sources: what you can show: Camera, screen, images, videos, text, colour, chat, web overlays, phone camera, shaders…
• Going live and ending: The Go live button, title and category, and what to keep open.
• Which browser to use: Chrome or Edge on a computer does everything; others do the basics.

Open the studio: free, nothing to install, no account.

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