Twitch Dual Format Streaming

In summer 2025, Twitch launched Dual Format streaming alpha, which brings simultaneous horizontal and vertical streaming to Twitch. Streamrun supports Dual Format in three ways: an automatic vertical frame, Dual HD input, or two separate inputs (one for horizontal and one for vertical). With Streamrun, you can stream in Twitch Dual Format from any device or software, while continuing to multistream in both orientations.

Step-by-step guide to go live with Twitch Dual Format streaming

1. Sign up to Streamrun.
2. Create a new configuration from scratch.
3. Add Output stream element with the type "Twitch Dual Format".
4. Split your horizontal input into two paths: One goes directly to the Output’s horizontal port. The other goes through a Vertical frame element, and optionally a PNG Overlay element (use a 1080×1920 image), then to the Output’s vertical port. Your configuration should look like this:
5. The Preview window shows horizontal and vertical orientations side by side.
6. Go live on Twitch in both orientations, and let your audience enjoy your content on any device.