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Summary – The blog discusses a common issue faced by many users, i.e., audio-video sync issues. We have provided some free solutions and recommended an ultimate professional solution – Kernel Video Repair to fix all the corruptions issues in video files.

Common Scenarios

Let us check some common queries of users complaining about audio-video sync issues on multiple forums.

The downloaded MP4 video file is completely out of sync to its audio even though downloaded from a genuine source link.

“Problem is in my old DVD videos. I cannot imagine this bad audio-video sync as we got together with real excitement to watch this.”

“Just started watching a newly processed video on my recorder, but it does not seem proper at all as audio is running really fast than the video.”

“My colleague sent me some business videos for a review, but to my surprise, it plays out of sync every time I play.”

Nonetheless, numerous other situations can signal the presence of audio-video synchronization problems. Every user seeks a prompt resolution to restore regular video playback. Such issues frequently trigger additional errors, such as Windows Media Player encountered a problem while playing the file. It is advisable to familiarize oneself with the primary causes of audio-video sync issues in video content.

Audio-Video Sync Issues in Videos – Top Reasons
  • Video Media Player is outdated or improperly installed
  • Incorrect settings like large video frame length on the media player
  • Corruption of video files due to malware, antivirus attacks
  • Incorrect video editing on an external editor application
  • Bad sectors on system hard drive/other system issues
  • Incomplete download or export from its original source
  • Incompatible Video Media Player
Basic Solutions to Fix Audio-Video Sync Problems

Here are some straightforward remedies that might resolve the audio-video synchronization issue in your video files. It is advisable to attempt these solutions prior to exploring more advanced options:

  • Reacquire the video file from the original source, deleting the current one if necessary. Consider switching web browsers for the download.
  • Experiment with alternative video media players to determine whether the issue lies within your current media player.
  • Re-establish connections with external devices such as Bluetooth speakers that are used for video playback.
  • Reboot your system and attempt to play the affected video file again.
  • For high-quality video files (including HD and 4K), try playing them at a higher resolution.
  • Ensure a stable internet connection, particularly for live video streaming on platforms like YouTube. If issues persist, contact your Internet Service Provider (ISP) for assistance.
  • Update your media player and device drivers to their latest versions.
  • Keep your antivirus software up to date and perform a comprehensive system scan to address any potential bugs.
Resolutions Using Free Video Media Players

The majority of users typically utilize standard video media players such as VLC Media Player and Windows Media Player. These conventional media players offer the flexibility to adjust settings for resolving audio-video synchronization issues within video files.
Within VLC Media Player, there is a feature called Track Synchronization that permits users to manually adjust audio track synchronization within videos. This functionality proves especially beneficial when the audio track is out of sync with the video, either running faster or slower. To address this problem, users can employ the following straightforward process to make use of this feature.

  1. Start your VLC Media Player and open the video file.
  2. Click on the Tools menu and select the Track Synchronization option from the drop-down list.
  3. Track Synchronization

  4. To initiate the Adjustments and Effects dialogue box, open it anew. Within this interface, navigate to the Synchronization tab. In the Audio/Video section, locate the Audio track synchronization option, and use the upward and downward arrows to fine-tune the audio-to-video delay according to your needs. Subsequently, click on the Close option. Proceed to play your video. It may be necessary to make multiple adjustments to achieve the desired outcome.
  5. Note: Users can also try pressing J or K keys when their video is playing, and there is an audio-video lag issue. Doing this action would automatically adjust the audio lag with video for plus/minus 50 milliseconds.

Windows Media Player settings include network buffering and audio-video synchronization options, which can be utilized to fix the problem. Let us check out the process in steps.

  1. Start your Windows Media Player, open the mis-synced video file on it.
  2. Click on the Organize section and select Options from the drop-down list.
  3. Windows Media Player settings

  4. To make these adjustments, start by opening the Options dialog box. Then, navigate to the Performance tab within the dialog box. Within the Network Buffering section, input values ranging from 1 to 10 for the Buffer setting. Additionally, you’ll find an option in the Video Playback section labeled “Drop frames to maintain audio and video synchronization.” To enable this feature, simply check the corresponding box. Finally, don’t forget to click the OK button to save your changes.
  5. Drop frames to keep audio and video synchronized

  6. Run the video again to check this setting helped.
  7. It cannot be guaranteed that the aforementioned solutions will suffice to resolve audio-video synchronization problems arising from video file corruption. In such cases, a prompt remedy for the corrupted video files is imperative, and the assistance of a resilient video file may prove invaluable.

An Ultimate Solution to Fix All Video Issues

For addressing corrupted video files, users can rely on the Kernel Video Repair tool, known for its high efficiency and widespread popularity. This tool can effortlessly scan and restore video files in various formats, originating from diverse recording devices. Its operation is user-friendly, featuring straightforward steps and interactive functionalities. The tool’s advanced design, fortified with robust algorithms, ensures a flawless repair process, even for videos are playing in slow motion. To acquire additional details about this tool, please visit the website.


Q. Why my downloaded video file has out-of-sync audio and video tracks?
A. It may happen if the download link is not genuine, or the download is interrupted due to which incorrect/incomplete downloading of the video file or other reasons like a sudden shutdown of the system or network failure during the download process.

Q. How does the free trial version of the tool work ?
A. The tool recovers corrupt video files for up to 30 seconds only.

Q. I am currently using KM Video Player to run my video files but the audio track is going a bit forward than the video track. What should I do?
A. In this case, you can utilize the Track Synchronization feature in the VLC Media Player to delay the audio track for some seconds as explained in the article itself.

Q. Does the tool support repair of corrupt video files in different file formats together?
A. Yes, of course. The advanced video repair tool supports multiple video file repair even if they have different file formats.

Q. How can I fix the minor audio lag issue while playing the video?
A. If you are playing your out-of-sync video in the VLC Media Player, just press J or K keys to set audio lag with the video for plus/minus 50 milliseconds automatically.

Kernel Video Repair