How to Fix Audio and Video Out of Sync on TV/Computer/Web

Part 1. Why Is My Streaming Video and Audio Out of Sync

Depending on whether you are watching videos online or offline, the reasons for audio not syncing with video can vary. Here are all the possible reasons that can trigger audio and video not syncing issue.

• Slow or unstable internet connection affecting real-time playback.
• Buffering delays during online streaming.
• Insufficient system resources (CPU, RAM).
• Incompatible or outdated media player.
• Outdated graphics driver or audio driver.
• Full or corrupted browser cache
• Errors during the encoding process.
• Damaged or corrupted media files

Part 2. How to Fix Audio and Video Out of Sync with 4DDiG Video Repair

It will lead to audio lagging behind video if your downloaded video file is corrupted or damaged. To fix this, you’ll need a professional file repair tool, and we recommend 4DDiG Video Repair. This easy-to-use tool can repair any media file irrespective of the level of corruption or damage. Offering both Quick and Advanced repair, it ensures an extremely high success rate in repairs and becomes a preferred choice among beginners and professionals.

Here are the key features of 4DDiG Video Repair that make it stand above all.

• Repair damaged or corrupted video and audio files with a few clicks.
• Support for a wide range of media file formats including MP4, MKV, AVI, MOV, etc.
• Support various storage devices likeg GoPro, and DJI drones, and most hard drives, SD cards, PCs, and laptops.
• Repair multiple video and audio files in one go.
• High repair speed and success rate.
• Preview the repaired video files before exporting.
• Available for Windows and macOS users.

Now let’s go through how to fix video audio not synchronized by repairing corrupted media files via 4DDiG File Repair.

• Download and install this video repair software on your computer. Launch the application and click the "Corrupted File Repair" option from the left side. Go to the "Video Repair" section to proceed.
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• Drag and drop the corrupted video files that you want to repair. Or, touch on the "Add Videos" button to upload them.

  

• Once added, click the "Repair All" button and wait for the repair process to complete.

  

• You can play the repaired files via "Preview" to check out if the issue of audio not syncing with video has been resolved. Select the repaired files and click the "Save" or "Save All" button to save them on your storage disk.

  

Part 3. How to Fix Audio Not Synced with Video on Web

You already have some ideas about the causes why online video and sound are not in sync from YpouTube, Netflix, Prime Video, etc. on Chrome, Firefox, or other web browsers. We will address those reasons and fix the issue instantly. Check out the following quick fixes and execute them all until the broswer audio delay or video delay problem is resolved.

Fix 1. Check Your Internet Connection

Since poor internect connection is a major cause of streaming video and audio out of sync, you should first check if your internet connection is stable. You can visit the online service—Speedtest by Ooklay to find out if your internet connection is lower than usual. If the speed is slow, you can contact your Internet service provider to boost the speed. Butif the connectivity is steady, then move to next fixes.

Fix 2. Check Issues With Streaming Service

There are times when you may face the video out of sync with audio issue for no fault on your side. The streaming service platform you are using could be having an internal issue that is causing mismatch between the audio and the video. There have been instances where YouTube/Netflix/Amazon Prime audio and video out of sync issue has occurred due to internal problems.

If the video audio not synchronized issue is isolated to one platform while other platforms play videos correctly, the problem likely lies with the specific streaming service. You can visit Downdetector to check if it is down or contact its customer support team for confirmation. If that’s the case, wait patiently as they resolve internal technical issues.

Fix 3. Clear Browser Cache & Cookies

If your internet connection is stable and the streaming service is not at fault, the video audio not synchronized issue could be due to the cache and cookies in your web browser. The cached files can accumulate over time and hinder video streaming on the browser. That is why you should clear them when video and audio are out of sync.

Here are the steps to clear the cache and cookies in Google Chrome.

• Open the Chrome browser. Click the three-dot icon located at the top-right corner.
• Go to "More Tools" > "Clear Browsing Data".
• Choose the time range as All Time and select the “Cache images and files” as well as “Cookies and other site data” options.

• Click the "Clear Data" button.

  

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Part 4. How to Fix Audio and Video Out of Sync on TV/Computer

If you are playing any downloaded video on your offline media player for computers or facing the audio not in sync with video issue when casting or airplaying videos to TVs, it can be due to the file, the media player, as well as your system. We have illustrated how to fix the syncing issue by addressing the root causes directly below.

Fix 1. Adjust Audio Sync Settings for TV (Cite Samsung TV as a case)

Many users reported that they encountered the cast/airplay to Samsung TV audio and video out-of-sync error. It is related to the audio sync settings on TV. Now, follow the structions below to fix it:

• Navigate to Settings on Samsung TV.

• Then tap on the Speaker Sound icon at the left.

• You can move the slider of "Digital Output Audio Delay" to the left to shorten the delay time and fix the audio out of sync with video issue.

• Or, simply choose "Reset Sound" to configure the audio sync settings by default.

  

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Fix 2. Update Your Graphics and Audio Drivers

If your media file is not corrupted, outdated graphics and audio drivers can be causes of video out of sync with audio. The drivers may not be capable of handling the latest video file format. That is why you need to update your graphics and audio drivers to the latest available version, and here are the steps to follow.

Update Graphics Drivers：

• Search for “device manager” on the start menu and open Device Manager.
• Expand the Display Adapters option and right-click on your graphics device.

• Click on the Update Driver option, and the Device Manager will search for the latest driver and update if available.

  

Update Audio Drivers:

• Search for “device manager” on the start menu and open Device Manager again.
• Expand the Sound, Video, and Game Controllers option and right-click on your audio device.

• Click on the Update Driver option to update the driver to the latest available version automatically.

  

Restart your computer and play the downloaded video file to see if the problem is resolved.

Fix 3. Run Audio Troubleshooter

Microsoft has an inbuilt troubleshooter that helps spot any audio issue in your system and fix them automatically. Is you are having an audio delay in video issue, here are the steps to use Windows Audio Troubleshooter to fix it.

• Go to the taskbar and click on the Search field. Type in “audio troubleshoot”.

• From the search result, click on the “Find and fix problems with playing sound” option.

  

• On the Playing Audio window, click on the Next button to get started.

  

• The troubleshoot will search for audio devices on your computer. Select the audio driver and click on the Next button to proceed.

• The troubleshooter will scan the audio segment to detect any audio issue. If any issue is detected, it will resolve it audiometrically. Follow the on-screen instructions to complete the process and restart your computer.

Fix 4. Sync Audio and Video in VLC Media Player

VLC media player is a versatile tool that will also help you fix audio delay in video. You’ll need to calculate the delay and customize the settings to synchronize the audio track with the video perfectly.

Here's how to fix audio-video sync issues where the audio lags behind the video.

• Open the video in VLC Media Player. Calculate the audio delay manually.

• Go to Tools> Track Synchronization.

  

• Under the Audio/Video section, change the audio track synchronization to the number of seconds delayed as calculated in step 1.

  
• Click on the Close button and play the video to check the result.

Part 5. How to Synce Audio and Video in Porfessional Media Editors

Most media editors, like DaVinci Resolve, Premiere Pro, or Final Cut Pro comes with the audio editing function, which can fix delayed audio or sound in a video file. In those editors, you can also operate audio delay test.

How to Sync Audio and Video in DaVinci Resolve

DaVinci Resolve is a professional video editing software developed by Blackmagic Design. It is widely used in the film and television industry for its powerful features, including a built-in audio editing suite. Here, follow us to see how to use DaVinci Resolve to sync audio with video.

• Install the DaVinci Resolve free version and import the video that are not sync with audio.

• Right-click on the video in the editor and generate a audio timeline from the video clip (split audio and video).

• Darg the green audio timeline to the right or left to fix the delyed audio till it is synchronized with the video content.

• This way, you can fix the video lagging behind the video or sound lagging behind the video.

How to Sync Audio and Video in Premiere Pro

In Premiere Pro, a feature called "Merge Clips" can be applied to synchronizing video with audio

• In Premiere Pro, detach audio from video and then sync the beginning of the audio and video.

• Locate the footage end and apply the Rate Stretch Tool by pressing "R".

• Then drag the audio end to sync with video end.

  

How to Sync Audio and Video in Final Cut Pro

• In Final Cut Pro, upload the video you want to sync audio with and drag the video clip to the timeline.

• Right-click on the video clip timeline and select "Detach Audio" from the pop-up menu. Then the audio will be seperated from the video.

  

• Select the audio timeline, press the Shift key and press the Plus or Minus sign on the keybord to adjust to audio till it is synced with the clip based on the frames.

FAQs Related to Audio and Video Out of Sync

Q1: What is it called when audio and video are out of sync?

When audio and video are out of sync, it is often referred to as lip-sync or audio-video synchronization issues.

Q2: Is there a way to fix audio and video out of sync?

Yes, there are ways to fix audio and video out of sync issues. Solutions may include manully syncing audio and video, clearing cache, updating drivers or repairing corrupted media files.

Q3: How do I manually sync audio and video?

To manually sync audio and video, you can use video editing software like Adobe Premiere Pro or Final Cut Pro X to align the audio track with the corresponding video frames.

Conclusion:

The audio and video out of sync issue is quite common among Windows users. If you are facing the issue online, it is most likely due to slow internet speed and corrupted web browser data or extension. We have also stated all the reasons why you could be facing the issue while playing videos in the offline media player. The most likely reason is that the video file is corrupted, and we recommend 4DDiG Video Repair to repair media files instantly. With its capabilities, you can restore synchronization and enhance your overall media playback experience.