How to Fix NVENC Error init_encoder_error in OBS

The “NVENC Error: init_encoder_error” in OBS Studio is a common issue that prevents users from starting a livestream or recording session. This error typically occurs due to outdated NVIDIA graphics drivers, overloaded GPU resources, incorrect encoder settings, or conflicts with Windows features. This guide provides direct, actionable steps to quickly resolve the error and restore your OBS Studio functionality.

Step 1: Update Your NVIDIA Graphics Drivers

An outdated or corrupted graphics driver is the most frequent cause of this error. Updating your GPU drivers ensures OBS can properly communicate with the NVENC encoder.

  1. Download and open NVIDIA GeForce Experience, or visit the official NVIDIA driver download website.
  2. Check for the latest Game Ready Driver or Studio Driver.
  3. Download and install the update.
  4. During installation, select Custom Installation and check the box for Perform a clean installation to remove corrupted older files.
  5. Restart your computer once the installation is complete.

Step 2: Run OBS Studio as Administrator

Running OBS with administrator privileges ensures the software has the necessary system permissions to access your GPU’s hardware encoder.

  1. Right-click on the OBS Studio shortcut on your desktop.
  2. Select Properties.
  3. Go to the Compatibility tab.
  4. Check the box next to Run this program as an administrator.
  5. Click Apply and then OK.

Step 3: Change or Reconfigure the Encoder in OBS

If your GPU is temporarily overloaded or does not support the selected NVENC profile, adjusting your output settings will resolve the initialization error.

  1. Open OBS Studio and click on Settings in the bottom-right corner.
  2. Navigate to the Output tab on the left menu.
  3. Set the Output Mode at the top to Advanced.
  4. Under the Streaming or Recording tab, locate the Video Encoder option.
  5. If it is set to NVIDIA NVENC H.264 (new), try switching it to NVIDIA NVENC H.264 (standard) or HEVC.
  6. If the error persists, you can temporarily switch the encoder to x264 (which uses your CPU instead of your GPU) to bypass the error entirely.

Step 4: Disable Hardware-Accelerated GPU Scheduling (HAGS)

Windows Hardware-Accelerated GPU Scheduling can sometimes conflict with OBS Studio’s access to the NVENC encoder.

  1. Press the Windows Key, type Graphics settings, and press Enter.
  2. Click on Change default graphics settings (if applicable).
  3. Toggle the switch for Hardware-accelerated GPU scheduling to Off.
  4. Restart your computer for the changes to take effect.

Step 5: Lower Resolution and Bitrate Settings

If your GPU is older or running at maximum capacity from a game, it may fail to initialize the encoder. Lowering the processing load can fix this.

  1. In OBS, go to Settings and select the Video tab.
  2. Lower your Output (Scaled) Resolution (e.g., from 1080p to 720p).
  3. Set your Common FPS Values to 30 instead of 60.
  4. Go to the Output tab and lower your streaming/recording Bitrate (e.g., to 4000 Kbps).