Fix OBS Audio Delay & Sync Issues

Quick Answer: Click the Gear Icon in the Audio Mixer > Advanced Audio Properties. Use the Sync Offset (ms) column. If audio is early (heard before seen), add a positive number (e.g., 200ms). If audio is late, use a negative number.

Why Does Desync Happen?

Webcams and Capture Cards have latency (processing time). Your microphone is usually instant. This means your voice arrives 200-500ms before your face moves on screen. This "Mouth moves later than voice" effect is extremely distracting for viewers.

The Clap Test Method

  1. Start a Local Recording in OBS (don't stream yet).
  2. Clap your hands loudly in front of the camera. Do this 3-4 times clearly.
  3. Stop recording and watch the video in a player like VLC.
  4. Pause exactly when you hear the sound. Is your hands touching yet?
  5. Guestimate the delay (e.g., "sound was half a second early").

Applying the Fix

  1. Go to Advanced Audio Properties in OBS.
  2. Find your Mic/Aux.
  3. Set Sync Offset to 200ms (start here).
  4. Record another test. If it's better but not perfect, try 300ms.
  5. Repeat until the clap sound and visual clash perfectly.

Need Precise Sync?

Don't guess the milliseconds. Use our Audio Sync Calculator to find the exact offset.

➜ Launch Sync Calculator