Dual Format Streaming

Why stream in both formats

Horizontal video works best for longer viewing sessions, while vertical video improves discoverability as new viewers scroll through feeds. By streaming in both formats, you optimize content for how viewers actually watch and ensure your stream looks great everywhere.

Platform guides

Method 1: Automatically generated vertical video

Stream horizontal video from your device and use the Vertical Frame element to automatically generate a vertical version. By default, the horizontal video is centered in the vertical frame with a blurred background. This is the simplest way to get started with dual format streaming. Add a PNG overlay for additional graphics, such as a recommendation to view the horizontal stream.

Method 2: Dual HD streaming

Use the Dual HD 2640 resolution (2640×1280), which combines Full HD for horizontal streaming and 720p portrait for vertical streaming, side by side on the same canvas. Works with any broadcasting software and simplifies layout creation for both orientations, without requiring specialized GPUs.

Streamrun automatically splits the Dual HD stream and sends the correctly oriented video to each connected output. Read more about Dual HD at dualhd.org.

Setting up Dual HD in OBS

Method 3: Two Streamrun inputs

Add two Input elements to your configuration, one with type horizontal and one with type vertical. Use two streaming devices, two OBS instances, or the Aitum Vertical plugin to stream different orientations to each input. Connect outputs for horizontal and vertical multistreaming accordingly.