Why Is Prime Video Audio Out of Sync? 6 Quick Fixes

Have you ever settled in to watch a movie on Prime Video only to find the sound doesn’t match the picture? The good news is that most of the time, this issue isn’t permanent and can be fixed with a few adjustments. In this guide, you will learn why Prime Video audio goes out of sync and share 6 quick fixes that can bring your sound and video back together.

Part 1: Common Causes of Amazon Prime Audio Out of Sync

Before you start fixing the Amazon Prime audio out of sync problem, it helps to know what might be behind it. Audio delays on Prime Video can show up in small ways. It includes a fraction of a second lag, or in more noticeable ways where speech is completely off, and here’s why:

• Unstable internet connection. When your internet drops or slows down, Prime Video struggles to stream both sound and video evenly. The picture may keep playing while the audio falls behind. This often happens more on wireless connections than on wired ones.
• Outdated app or device software. Apps and devices need regular updates to stay compatible with streaming services. If the Prime Video app or your device software is old, it may not process the stream correctly. This can lead to sound and video slowly drifting apart during playback.
• Hardware performance limits. Not all devices can handle high-quality streaming. Older TVs, streaming sticks, or projectors may struggle when playing 4K or HDR content. When the processor can’t keep up, the audio may slip out of sync with the video.
• Playback settings changes. Switching between resolutions or altering audio output while watching can upset the timing between sound and picture. Even changing surround sound to stereo in the middle of playback can cause a mismatch.
• Temporary server glitches. Sometimes the issue comes from Prime Video itself. When their servers are under heavy load or facing minor errors, streams may arrive unevenly. This can create short-term sync issues that appear across different devices.
• Corrupted or damaged video files. Downloaded or recorded Prime Video content can become corrupted. If the file itself is damaged, the sound will never match the picture no matter what device you use. This is usually a sign that the video file needs to be repaired.

Part 2: 6 Quick Fixes for Prime Video Audio Out of Sync

If your Prime Video sound doesn’t sync, don’t worry, as most of the time it can be solved quickly. The 6 fixes below are practical and easy, so you can move through them until your Prime Video audio is back in sync.

1. Refresh or Restart the Stream

Sometimes the problem is only temporary. Stopping the video and starting it again can reload the stream properly, making the sound line up with the picture. If the issue comes from a small glitch, this simple refresh usually clears it.

Step 1. Stop the video by pausing or exiting playback.

Step 2. Close the Prime Video app or browser tab.

Step 3. Reopen Prime Video and play the video again. If the issue continues, restart your device before reopening the app.

2. Adjust Playback Quality

When your internet speed isn’t steady, Prime Video tries to adjust quality automatically. But that can cause audio to slip behind the video. Manually lowering the resolution can ease the strain on your connection and help everything sync better. It’s not always the sharpest picture, but smooth playback is usually more enjoyable than a perfectly crisp video with broken sound.

Step 1. Start playing the video in Prime Video.

Step 2. Open the playback settings. Choose a lower resolution, such as Good instead of Best.

Step 3. Resume playback and check if audio and video are now in sync.

3. Update the Prime Video App or Device Software

Outdated apps and firmware are often behind syncing issues. New updates usually bring bug fixes and better performance. Whether you’re on iOS, Android, Firestick, Roku, or a Smart TV, keeping your Prime Video app and device software up to date is a smart step. This helps prevent audio problems not only on Prime Video but across all your streaming apps.

For iOS (iPhone/iPad):

• Open the App Store.
• Go to your profile icon.



• Scroll down to find Prime Video.
• Tap Update if available.

For Android:

• Open the Google Play Store.
• Tap your profile icon and select Manage apps & device.



• Find Prime Video and tap Update.

For Firestick:

• Go to Settings. Click Applications and go to the Appstore.
• Enable Automatic Updates or manually update Prime Video from the app menu.

For Roku:

• Highlight the Prime Video app on your home screen.
• Press the * button on the remote.
• Select Check for updates.

For Smart TVs:

• Go to the TV’s app store or settings menu.
• Find Prime Video and check for an available update.
• Also check for any system software/firmware updates for the TV.

4. Use a Professional Video Repair Tool

If you downloaded a Prime Video file or recorded one for offline use and the audio is always out of sync, the issue may not be the app. That might be the file itself. In that case, a video repair tool can help.

One reliable option isRepairit Video Repair. This tool is designed to fix broken or corrupted videos where sound and picture don’t match. Here are some key features that make it useful for Prime Video issues:

• Restores proper audio-video sync in damaged or corrupted files.
• Supports different formats so you don’t have to worry about compatibility.
• Handles both minor glitches and severe syncing problems.
• Offers batch repair, so you can fix multiple videos at once.
• Works in both quick and advanced repair modes for better results.

Step 1. Open Repairit on your computer.

Step 2. Click +Add to upload the corrupted Prime Video file. Then, select Repair.

Step 3. Preview the repaired Prime Video file and click Save once the audio-video sync is fixed.

5. Clear App Cache or Browser Cookies

Over time, stored cache and cookies can cause streaming apps or browsers to behave oddly. Clearing them gives the app a fresh start, often removing hidden errors that affect playback. After clearing, Prime Video usually runs smoother, with sound and video syncing correctly.

For Mobile Devices:

• Open Settings and go to Apps.
• Select Prime Video.
• Tap Storage & Cache.



• Press the Clear cache button, then restart the app.

For Web Browsers (Chrome/Edge/Firefox):

• Open Menu and go to Settings.



• Go to Privacy and security and pick Delete browsing data.

  

• Choose the All time time range and check the Cookies and other site data and Cached images and files check box. Then, hit Delete data.



• Reopen Prime Video and try again.

6. Switch Devices or HDMI Ports for TV Streaming

If you’re watching on a TV and still notice syncing problems, the issue could be with the HDMI connection or even the TV itself. Trying a different HDMI port or testing Prime Video on another device can help you see if the problem is device-related. Sometimes simply switching to a tablet, phone, or another TV resolves it right away.

Step 1. If you’re watching on TV, unplug the HDMI cable and reconnect it.

Step 2. Try a different HDMI port on your TV. If possible, use a high-speed HDMI cable.

Step 3. Test Prime Video on another device. You can use your phone, tablet, or laptop. If the video plays fine elsewhere, the issue is likely with your TV or HDMI setup.

Part 3: Tips to Prevent Prime Video Audio Out of Sync Issue

Fixing the problem once is good, but it’s even better if it doesn’t come back. A few simple habits can prevent audio issues from showing up again when you’re streaming on Prime Video:

1. Keep your apps and devices updated. Regular updates make sure you always have the latest bug fixes.
2. Use a strong and stable internet connection. Streaming works best when your connection doesn’t keep dropping.
3. Avoid multitasking on your device. Running too many apps at the same time can slow things down and cause sync issues.
4. Store downloaded files properly. If you download movies, make sure you save them in reliable storage to avoid corruption.
5. Check your HDMI and audio setup. For TV streaming, good-quality cables and proper audio settings reduce syncing errors.

Conclusion

The issue may come from your connection, device, or even the video file itself. However, there are several reliable ways to fix it, from refreshing the stream to adjusting settings or updating software. If the problem is inside a downloaded file, a tool like Repairit Video Repair can bring it back to normal. With a few quick fixes and some simple habits, you can enjoy Prime Video without worrying about audio falling behind.