Fix Audio Sync Issue in OBS

Dropbox file – https://www.dropbox.com/s/vwxnhmlr98x1ejo/OBS%20Audio%20Video%20Sync%20Testing%20Tool.mp4?dl=0

The OBS Audio and Video Sync Tool has been designed to answer the important question of how much audio delay an Open Broadcaster Software user should apply in their live streaming system. The tool is a video that combines a visual scale of time with a countdown timer looping in sync with audio blips every second. OBS users can capture a video and audio recording of this tool to accurately determine the amount of audio delay they should apply to their live streaming system to sync up their audio and video streams.   

The OBS Audio Video Sync Tool includes a color-coded time scale to quickly measure the amount of time needed to sync your video and audio. The tool also includes an audio syncing bar accurate to one-thousandth of a second. To use this tool you simply need to record the video and audio from the video with the system that you wish to test. This would be your OBS or other video production software with all of the included hardware you are testing. Therefore you will need to record this video with the camera and microphone that you are attempting to sync up. Once this video has been recorded you can import this recording in a video editing software so diagnose. 

Once your recording has been made and imported into your video production software you will be examining the audio section of the recording. Because OBS allows us to delay the audio of our microphone sources, we will be examining the audio sync reading from our video and determining the amount of delay we need to add to our audio sources to sync up our video. Using the video recording you can scrub through the video looking for your audio blips. Generally, the audio will be recorded faster than the video. Therefore you can use the audio sync reading as a guide to adjusting your system.  Once you have determined the amount of audio delay your system will require it’s time to apply that audio delay in OBS.  You can open up the Advanced Audio Properties in OBS by clicking the settings cog next in the audio section of OBS.

One of the most common issues users have with the OBS software is simply syncing up the audio and video streams coming from multiple pieces of hardware into their live streaming computer. It is possible to sync up the audio and video sources “upstream” from your video production software by using a capture device such as a Magewell USB 3.0 pro capture card. In this scenario, the audio, and video by a single device that uses the same drivers to connect to OBS. One of the main culprits with audio and video sync issues is the fact that different products use various drivers with differing latency for conversion.  

Additional chapters from the OBS Superuser Guidebook

• Chapter 1 - An Update on the Updates here
• Chapter 2 - How to Customize OBS here
• Chapter 3 - How to Optimize OBS here
• Chapter 4 - How to use the core features of OBS here
• Chapter 5 - How to use video filters in OBS here
• Chapter 6 - How to use audio filters in OBS here
• Chapter 7 - The Top 10 OBS Plugins here
• Chapter 8 - The Multiple RTMP Streaming Plugin here
• Chapter 9 - The Automatic Scene Switching Plugin here
• Chapter 10 - How to record multiple sources in OBS here
• Chapter 11 - How to dock sources with live video in OBS here
• Chapter 13 - How to use NDI in OBS here
• Chapter 14 - How to route Audio in and out of OBS here
• Chapter 15 - How to use Virtual Audio cables with OBS here
• Chapter 16 - How to use VST Audio Plugins for OBS here
• Bonus Chapter - How to fix audio sync issues in OBS here
• Chapter 16 - How to use use hotkeys with filters here

Check out our other articles about Open Broadcaster Software below:

• Updated - How to connect OBS and Zoom with VoiceMeeter and Headphone Monitoring - here.
• How to connect OBS with Zoom, here.
• What's new with OBS 26, here.
• OBS vs vMix a complete review here.
• How to use Zoom for Church Meetings and Worship here.
• Here are the top 10 OBS features you need to know about
• Getting dropped frames in OBS. Here are some new feature to help with that.
• Take a look at OBS 24 and all the new feature here.
• Increase your productivity with OBS and learn how to use hotkeys here
• Learn how to setup animated stinger transitions in OBS here
• Learn how to install the NDI plugin for OBS (and why you should) here
• Learn more about the latest OBS user interface (UPDATED for 2019) here
• Make your audio in OBS sound great with these VST 2 plugins here
• Learn how to fix the most common OBS issues! Audio and Video Sync! here
• Learn how to use OBS 20+ here
• Learn how to use NDI Cameras with OBS here
• Learn how to use the OBS Multiview here
• Learn OBS quickly with our ZERO to SIXTY tutorial video here
• Learn more about OBS settings and optimizing your settings for live streaming here
• Learn how to record videos using OBS here
• New OBS 24 feature allows broadcasters the ability to pause and restart video recordings. Learn more here.
• Learn how to add live annotations over your OBS productions here
• Learn how to add a webcam and set up a picture in picture scene inside OBS here
• Learn how to crop and rotate inputs inside OBS here
• Learn how to use color correction tools and LUTs here
• Learn the best way to connect OBS and Zoom here
• Learn how to connect OBS and Teams here
• Learn how to use countdown timers in Teams here
• Learn where OBS recordings are saved here
• Learn how to live stream to YouTube and Facebook with OBS for free here
• Learn about OBS 27's new features here