How to Fix Audio Video Sync Problems in AVI Files (AVI, MKV, MP4)?

Updated on June 28, 2021

One of the most annoying issues while watching any videos is its audio not synchronized with video. If you ever run into any of such situations in your AVI, MKV, MP4 videos, download and try SFWare video repair tool and fix the audio out of sync problem in AVI files.

AVI video format is the most used video file format while recording the videos. It’s also the most preferred file extension for videos since AVI files require less space compared to the other video file formats such as MOV, MKV, MP4, XVID and others .However, audio video getting out of sync is a common issue with these AVI files which can sometimes make AVI files unplayable. Let us see how to fix this audio video sync issue.

Reasons behind Audio Video Sync Problems-

When an audio plays ahead of video or vice versa, it is said that audio and video is out of sync. The most important reasons behind the problem could be-

1. Damage in the part of video, therefore your video player fails to calculate the time length of the corrupt or damaged video part.

2. When the video player cannot recognize the change that has been made to the video's frame rate i.e., the playback rate of the video.

Along with the above mentioned reasons there are external factors that affect the video (AVI, MOV, MP4, MKV) files and cause audio video sync issues. Video editing and converting,Virus, abrupt termination of the video files and the incompatibility with the CODEC leads to the audio and video not in sync problems and video lagging and stuttering issues that makes AVI videos not to play on Mac and Windows.

How to Fix Audio Video Sync Problems?

There are two ways to fix the audio video out of sync problems. The one with VLC helps you to temporarily fix the problem when audio and video are not in sync. The next method, audio video synchronization software involves the steps to fix audio video sync problems permanently.

Fix Out of Audio Video Sync using VLC

VLC media player is an open source and free media player software that helps in fixing most of the video problems including AVI, MOV, Mp4 and MKV etc. make use of the VLC to fix the audio out of the video sync.

1. First, open the video file that you are facing the audio video out of sync problem in VLC media player.

2. Next, select Tools -> Track Synchronization. Mac users can select Window -> Track Synchronization.

3. Find the section titled Audio/Video under synchronization tab. You will be able to find Audio track synchronization to adjust the timing of the audio.

As mentioned earlier, this is not the permanent solution to fix the video playing faster than audio or audio faster than video.

Because, if the problem is due to corruption or the damage in the video files VLC media player would not be able to fix the problem.

In such cases all you need is Video Repair software that fixes audio and video sync problems.

SFWare Video repair tool is the most recommended tool for its streamlined design that helps you fix the audio video sync issues on AVI or any other video files. With the unique built-in repair algorithm, SFWare creates a new copy of your video files and works on read only mode. Also, keeps your original file untouched. Therefore it assures the file integrity. SFWare supports both Windows and Mac platforms to fix the issues.

The Easiest Method to Fix Audio Video Sync Permanently

Download and install the SFWare AVI Video repair tool. Launch the application.

Step 1: From the main screen, Browse for the corrupt Video file

Step 2: Wait for the tool to repair the selected AVI file

Step 3: Once the repair process is complete, you can view the repaired AVI file. Save the file in your desired location on the computer.

SFWare Video Repair tool also helps you by fixing XVID and repairing DIVX files audio sync issues.


Video playing ahead of video or Video plyable ahead of audio is the most common issue seen while watching the videos. With the above mentioned repairing methods you can easily audio video sync issues in any video file formats including AVI, MP4, MKV etc.