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Table of Contents
Check network connections and video loading
Clear Safari cache and website data
Turn off extension plugins and hardware acceleration
Update the system and Safari browser
Home Computer Tutorials Browser How to fix audio that is out of sync with video in Safari?

How to fix audio that is out of sync with video in Safari?

Jul 25, 2025 am 01:15 AM

The problem of video, audio and video out-synchronization of Safari browser can be solved by the following methods: 1. Refresh the page or switch the network environment to close the bandwidth-occupying applications; 2. Clear Safari cache and website data, and restart the browser; 3. Turn off the extension plug-in and hardware acceleration functions; 4. Update the system and Safari to the latest version. If the problem persists, it may be a problem with the website itself and needs to be fixed.

How to fix audio that is out of sync with video in Safari?

Sometimes when watching videos in Safari browser, the audio and graphics are not inconsistent. Either the sound is half a beat slower or a beat faster, which sounds particularly awkward. Although this situation is not common, it will affect the experience once it occurs. Fortunately, most of the time the problem lies in cache, plug-in or browser settings, and some methods can be tried to fix it.

How to fix audio that is out of sync with video in Safari?

Check network connections and video loading

The audio and video are out of sync, which is often caused by incomplete loading. When Safari plays online video, if the network is unstable, it may prioritize the loading of audio or part of the video, causing synchronization disorder.

  • Try refreshing the page : It is simple but effective, and many temporary loading errors can be solved.
  • Change the network environment : for example, to switch from Wi-Fi to wired network, or change the router to test.
  • Close other applications that occupy bandwidth : download tools, cloud synchronization software, etc. may grab the Internet speed.

Clear Safari cache and website data

Excessive browser cache may also cause media files to load abnormally. Clearing Safari's cache can often solve the problem.

How to fix audio that is out of sync with video in Safari?
  • Go to Safari Settings → “Privacy” → Click “Manage Website Data”
  • Delete all caches and cookies
  • Restart Safari and try playing video again

In addition, if it is a problem with a specific website, such as YouTube or Netflix, you can only clear the data of the site without deleting it all.


Turn off extension plugins and hardware acceleration

Some browser plug-ins (such as ad blocking tools) will affect the normal playback of web audio and video. Safari's hardware acceleration capabilities can also cause synchronization issues in some cases.

How to fix audio that is out of sync with video in Safari?

You can do this:

  • Open Safari Settings → “Extensions” → Temporarily close all plugins
  • Go to the "Development" menu (if not, open the "Development" menu in your preferences first)
  • Uncheck "Use hardware accelerated decoding"

Then reload the video to see if there is any improvement. If the problem is solved, you can enable the plug-in one by one to check which caused it.


Update the system and Safari browser

Older versions of Safari and macOS may have compatibility issues, especially if the video or audio encoding support in new formats is insufficient.

  • Check system updates: Go to "System Settings" → "Software Updates"
  • Make sure Safari is the latest version, and the system update will automatically update the browser

If you are using an old Mac and cannot upgrade the system, you may have to consider changing your browser, such as Chrome or Firefox.


Basically these common solutions. Not every time can be solved immediately, but most cases can be solved through the above steps. If the problem persists, it may be a problem with the website itself, so I can only wait for them to fix it.

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