Configure OBS Multi-Track Streaming with Hardware Encoding

This article provides a step-by-step guide on how to configure OBS Studio to stream multiple video bitrates simultaneously using your computer’s hardware encoder. By utilizing features like Enhanced Broadcasting, you can offload the heavy lifting of encoding multiple streams to your GPU (NVIDIA, AMD, or Intel QuickSync), allowing viewers with different internet speeds to watch your stream smoothly without overloading your CPU.

Step 1: Enable Multi-Track Streaming in Stream Settings

To stream multiple bitrates natively, you must use a streaming service and protocol that support multi-track video (such as Twitch’s Enhanced Broadcasting or compatible RTMP/WHIP endpoints).

  1. Open OBS Studio (ensure you are on version 30.2 or newer).
  2. Click on Settings in the bottom right corner.
  3. Navigate to the Stream tab on the left menu.
  4. Select your streaming service (e.g., Twitch).
  5. Check the box labeled Enable Enhanced Broadcasting (or Multi-Track Video, depending on your platform). This tells OBS to negotiate multiple resolution and bitrate tracks directly with the ingest server.

Step 2: Configure the Hardware Encoder

Once the service is configured to accept multiple tracks, you must assign a dedicated hardware encoder to handle the simultaneous video encodes.

  1. In the Settings window, click on the Output tab.
  2. Change the Output Mode dropdown at the top to Advanced.
  3. Select the Streaming tab.
  4. Set the Video Encoder to your GPU’s hardware encoder. Depending on your system components, select:
    • NVIDIA NVENC H.264 or AV1 (for NVIDIA GeForce cards)
    • AMD HW H.264 or AV1 (for AMD Radeon cards)
    • Intel QuickSync H.264 or AV1 (for Intel Arc or integrated graphics)
  5. Avoid using x264, as software-based multi-encoding will severely degrade your CPU performance.

Step 3: Adjust Multi-Track Video Settings

With multi-track streaming enabled, OBS Studio automatically configures the creation of the lower-resolution encodes based on your hardware capabilities and available upload bandwidth.

  1. Under the Streaming tab in Output settings, locate the Enhanced Broadcasting Settings section.
  2. Check the box to Check system configuration to let OBS automatically optimize the encoder loads.
  3. Set your maximum aggregate upload limit under the Maximum Bandwidth option. Ensure this total fit within your internet connection’s upload speed (retaining a 30% safety overhead is recommended).
  4. Click Apply and then OK to save your settings.

Once configured, starting your stream will automatically prompt your GPU to generate and broadcast multiple video pipelines (such as 1080p, 720p, and 480p) directly to the streaming server natively.