MP4 is most commonly used video format as it is compatible on various storage devices like desktop/laptop computers, Smartphones, iPods, and more. It also supports numerous media players on Windows and Mac OS platforms. But at times, when you try to play MP4 video, you may face different issues and one among them is audio video synchronization problem i.e., audio lagging behind video or vice versa. Even there is a chance that, audio continues to play and video gets freeze and vice versa.

Anyhow, this synchronization issue can be fixed manually by adjusting the frame rate in MP4 file or using media player to compress audio and video bits. But if this process gets failed or you unable to fix MP4 audio video sync problem using any other method, then you need to make use of a suitable repair utility. Well, in current era, lots of repair tools are available, and if you want to know how to fix audio video sync MP4 issue in easy and efficient way, then make utilization of Repair QuickTime Software. This repair program has powerful inbuilt algorithms that are specially designed to fix any kind of issues related MP4 and other video files. If you are unable to play .mov file in QuickTime player, then you can take the assistance of this utility to make .mov video playable again on QT and other media players.

Common causes for audio video sync issue in MP4 files

  • Codec Issue: If any audio or video codecs are missing from file, or if the codecs doesn’t supports media player, then it may leads to audio video sync problems in MP4 file.
  • Due to External Threats: External threats like malwares, virus, Trojans, spywares, etc., are the major causes for partial or complete video corruption i.e., if MP4 video gets affected by virus or malwares, then video becomes inaccessible or you may face above mentioned issue.
  • Disruption/Interruption: While transferring, or downloading MP4 video files, if any disruptions takes place, then there are chances for audio file to get corrupt, and when you try to play such MP4 video, then audio will be delayed which indicates MP4 sync issue.
  • Mismatched Frame: If the length of video frame is bit longer than audio frame or specified processor takes much time to make video frames with respect to audio frames, then you may experience audio problem in MP4 file.

The audio video sync problems in MP4 file may also arises due to improper termination of media player, header corruption, incorrect video editing process, errors while altering file format, and more. However, you can get rid of these causes using Repair QuickTime software as it guides you how to fix audio video sync MP4 within few clicks. Apart from this, you can easily perform MP4 video error repair within couple of minutes.

Why to use this software?

The Repair QuickTime is an appropriate solution to fix MP4 audio video sync issues. This amazing app has robust repairing engine that efficiently fix video audio sync MP4 problems with ease. It has capability to fix corrupt MP4 file. It is the most preferred and recommended app for fixing audio video sync problems MP4. This advanced repair utility built with fully automated repair process which can fix any kind of issues related to MP video files such as CRC error, broken issues, unknown or unrecognized errors, etc. It is compatible on Windows (Windows 8, 6, XP, Vista, Win server 2003 and 2008) as well as on Mac (Mac Yosemite, Mavericks, Mountain Lion, etc.). By using its intuitive user interface, even non-tech users can know how to fix audio video sync MP4 problems. Other than fixing audio video sync MP4 file, it also facilitates you to fix any issues regarding MOV and other forms video files. It has ability to separately reapir audio and video streams and then adjoins them to make healthy and playable video file. Using its preview features, you view the fixed MP4 file prior to restoration.

Steps to fix audio video sync MP4:

Step 1: Make a simple installation of the software on your computer to fix MP4 audio video sync. Then, browse and select your MP4 files which need to be fix and then click on "Repair" button.

Fix Audio Video Sync MP4 - Home Page


Step 2: On completing the scanning process, it provides a "Preview" option to view the fixed MP4 video file.

Fixing Audio and Video Sync in MP4 Files - Preview Fixed MP4 File


Step 3: "Save" the fixed MP4 video file after previewing it.

How to Fix Audio Video Sync in MP4? - Save Fixed MP4 Video File