Free online streaming software: a live studio in a tab

Online streaming software usually means one of two things: a program you download, or a service that mixes your show on its servers. flint is neither: the whole broadcast studio runs in your browser, on your computer, and sends the finished picture straight to your streaming service.

A broadcast studio, in the browser

• Scenes made of cameras, screens, windows, browser tabs, pictures, video, text and web overlays, laid out by dragging.
• Studio mode for getting the next shot ready, transitions, a downstream keyer for logos and lower thirds that stay on top.
• An audio mixer with filters, monitoring and ducking.
• An auto director that cuts to whoever is talking, or switches on the beat.
• Multiview and projectors for a second screen, and recording of the programme or each camera on its own track.

Why in the browser

Nothing to install or update, so it works on computers you can't install on and on Chromebooks. Your setup is backed up encrypted, so any computer becomes your studio. Your video never passes through a server in the middle: it goes from your browser to the streaming service.

Where it streams

Twitch, with sign-in, alerts, chat, polls, predictions, raids and channel points built in, and any service or server that accepts WHIP (WebRTC-HTTP Ingestion), such as Cloudflare Stream, Amazon IVS, Owncast or Broadcast Box. You can send to several at once.

Questions

Is it a cloud service?

No: the mixing happens on your computer, in the browser. flint's server only keeps your encrypted backup.

Does it record?

Yes, to MP4 or WebM on your computer, with separate files per camera and microphone if you like, a replay buffer and clips.

Do I need an account?

No. Your setup lives in your browser and in an encrypted backup only your code or passkey can open.

Guides

• What flint is: A streaming studio in a browser tab, like OBS: nothing to install, no account.
• Studio mode: Get the next scene ready in a preview, then send it live with a transition.
• The audio mixer: Volume, mute, meters, and hearing a source in your headphones.
• Recording: Save what's on screen to a video file, while live or not.
• Streaming somewhere other than Twitch: Any service that takes WHIP: Cloudflare, Amazon IVS, Owncast, Restream…
• Stream to several places, and stream delay: Also send the stream elsewhere at the same time; or run it a few seconds behind.

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

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