How to Use OBS Studio WHIP Protocol for Low Latency

This guide provides a straightforward, step-by-step tutorial on how to configure and use the WebRTC HTTP Ingestion Protocol (WHIP) in OBS Studio for ultra-low latency live streaming. You will learn what WHIP is, why it is beneficial for real-time interaction, and how to configure your OBS Studio settings to broadcast with sub-second delay.

What is WHIP?

WebRTC HTTP Ingestion Protocol (WHIP) is an internet draft standard that allows media engines like OBS Studio to ingest video streams into a media server using WebRTC. Unlike traditional streaming protocols like RTMP, which often have a delay of several seconds, WHIP enables ultra-low latency streaming with delays of less than a second, making it ideal for real-time auctions, interactive webinars, and live gaming.

Prerequisites

To stream using WHIP, you will need: * OBS Studio (Version 30.0 or newer is highly recommended, as native WHIP support was officially introduced in this version). * A WHIP-compatible streaming service or media server (such as Dolby.io, Cloudflare Stream, Janus, or any self-hosted WebRTC media server). * A WHIP Endpoint URL and a Bearer Token (if required) provided by your streaming service.

Step-by-Step Configuration in OBS Studio

  1. Open Stream Settings: Launch OBS Studio. In the bottom-right control panel, click on Settings (or go to File > Settings in the top menu).

  2. Select the WHIP Service: In the Settings window, click on the Stream tab on the left sidebar.

    • Click the Service dropdown menu.
    • Select WHIP from the list of available services.

  3. Enter Your WHIP Credentials: Once WHIP is selected, you will see fields for the Server and Bearer Token.

    • In the Server field, paste the WHIP Endpoint URL provided by your streaming service.
    • In the Bearer Token field, paste your stream’s authorization token (if your provider requires one).

  4. Configure Video and Audio Encoder Settings: Because WebRTC handles network congestion differently than RTMP, configuring your output settings correctly is crucial for maintaining ultra-low latency. Click on the Output tab on the left sidebar and apply these settings:

    • Output Mode: Set this to Advanced.
    • Video Encoder: Select a hardware encoder like NVIDIA NVENC H.264 or AMD HW H.264 (or x264 if you prefer CPU encoding). WebRTC natively supports H.264.
    • Rate Control: Set this to CBR (Constant Bitrate).
    • Keyframe Interval: Set this to 1s or 2s. WebRTC performs best with frequent keyframes.
    • B-frames: Set Max B-frames to 0. WebRTC does not support B-frames efficiently, and disabling them reduces latency.

  5. Apply and Save: Click Apply and then OK to save your settings.

Start Your Stream

With your settings configured, simply click the Start Streaming button on the main OBS Studio interface. Your stream will instantly publish to the WHIP server with sub-second latency, enabling real-time interaction with your audience.