Twitch Tests Dual Format Streaming for Horizontal and Vertical Video
The feature addresses the split between desktop and mobile viewing habits on a single platform, removing the need for streamers to choose one orientation or run two separate broadcasts.
Reporting from 1 sources: GIGAZINE.
Twitch is testing Dual Format Streaming, letting streamers broadcast in both horizontal and portrait modes simultaneously. Viewers see the correct orientation based on their device. The beta is open to registered streamers. Other updates from TwitchCon Rotterdam 2026 include 1440p streaming for all partners and affiliates, a summary feature for late-arriving viewers, and improved live-start notifications.
Twitch announced Dual Format Streaming at TwitchCon Rotterdam 2026, a beta feature that lets streamers send both a horizontal and a portrait feed from one broadcast. Viewers on PCs and TVs see the horizontal version; viewers holding a smartphone vertically see the portrait version. If a phone is turned sideways, it shows the horizontal feed. The feature works with OBS Studio (version 31.1.2 or later, 32.0.0 or higher recommended), Streamlabs, Streamrun, and XSplit. OBS users need a plugin. Twitch recommends streamers account for a 48-pixel header at the top and chat at the bottom of the portrait layout. The event also brought 1440p streaming to all partners and affiliates, a summary tool for viewers who join mid-stream, and better live-start notifications.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.