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Why Is MP4 No Sound? How Can I Fix the Issue with Ease?

Easy Methods for Fixing the MP4 No Sound Issue
AuthorRecommended by the author

Author by Cooper

Updated on Jun 26, 2023

Are you wondering why MP4 has no sound and looking for a reliable solution? This article is for you. Find the root cause of your MP4 no sound and learn how to fix it in minutes using the methods listed here.

As MP4 no sound issue is typically caused by incompatible audio codec, download this handy video transcoder to fix it at once:

Why is MP4 No Sound?

MP4 No Sound

"Is the MP4 movie I watch a mime? Why I can’t hear anything from my speakers?" When you think like this, you may have encountered an MP4 no audio issue. Why and how did it happen suddenly? Don't worry, I will clear your doubts and show you how to solve the issue that MP4 has no sound in the following. Continue reading.

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Causes of MP4 No Sound

Cause 1. The Broken MP4 File

In rare cases, if you find that a particular MP4 file has no audio, you can attribute the MP4 video no sound problem to the broken MP4 file itself. You can try to repair the corrupted MP4 file or re-download the video from the website. But on the other hand, if all MP4s have no sound, case 2 is the most likely cause.

Enable Speaker

Cause 2. The Disabled Speaker and Invalid Realtek Driver

If all your video files are played without sound on your device, please make sure your speakers have not been accidentally disabled and check if your Realtek drivers support sound playback.

Try to enable the speaker according to the steps on the right, or download the latest audio driver from the official website or update the driver through professional software.

You can find some similar methods for fixing sound issues like Facebook Audio Not Working, YouTube No Sound Problem, and Roku MKV No Sound Problem.

Cause 3. An Unsupported Audio Codec (Most Likely Cause)

When a specific MP4 video sound is not working, it's also likely that the audio codec of the MP4 file is not supported. Because MP4 is a format container, it can store not only video codecs, but also many audio codecs, such as MP3, WMA, Opus, AAC, AC-3, DTS, LPCM, ALAC, DTS-HD. If your media player doesn't support the audio codec in the movie you just watched, you may encounter the MP4 file no sound issues. Similar cases are AVI no audio, MOV no sound, TS no sound, etc. Replacing the audio codec of the MP4 video with an MP4 video converter is the right solution.

Replace the Codec to Fix the MP4 No Sound Issue via HD Video Converter Factory Pro

WonderFox HD Video Converter Factory Pro is a professional video software that can handle various video conversions. And besides changing between video formats, it can also easily convert the audio format of a video in a few mouse clicks. It can help you change the audio codec in MP4 to a format supported by your device such as MP3, AAC, and WAV. Then you can enjoy the MP4 video without sound errors.

The steps to convert MP4 audio codec are simple. Free downloadFree download this application to replace the codec of the no sound MP4 now.

Fix MP4 No Sound Issue without a Hitch
HD Video Converter Factory Pro
  • 1. Change audio format in an MP4 video with ease.
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An Easy Guide on How to Fix MP4 Video No Sound Issues

Add the MP4 Video into the Converter

Before altering the codec of the video, please free downloadfree download the MP4 converter first.

Step 1: Add the MP4 Video into the Converter

To import files into the converter, you should first click Converter to enter the video converter window, then click Add Files or drag and drop your files.

Choose the Audio Codec

Step 2: Select MP4 as the Output Format

Click the format column on the right side of the converter window and choose MP4 under the Video tab. After that, click Parameter settings and click Encoder in Audio setting tab to choose AAC audio codec, which is most widely used and supported.

Hot search: VLC Audio Sync | MKV File No Sound on PC

Replacing the MP4 Audio Codec

Step 3: Start Replacing the MP4 Audio Codec

Choose an output path to save the converted files by pressing the ▼ button, then click the Run button to change audio codec in the MP4 video.

After all these steps, the MP4 audio not playing issues should go away. Test the file in your media player now.

More about the MP4 Video Converter

Besides solving the MP4 no sound issue, this converter can also be used to deal with other tasks, such as changing video formats, making videos louder and so forth. Seriously, it is the most user-friendly but powerful converter which you should not miss.

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Fix No Sound on MP4 Video with Another Media Player

By the way, you can try another media player to fix no sound on MP4 issue. Here are some reliable MP4 players.

Mp4 Player Alternatives

VLC Media Player: It is a highly-acclaimed free and open-source media player, which is designed to play a diverse range of video and audio files.

KMPlayer: The internal codecs of MP4 (MPEG-4 / H.264) and other formats included in KMPlayer provide a fast and efficient way to play videos.

BS.Player: It specializes in playing video and audio in MP4, AVI, MKV, WMV, VOB, MP3, AAC, AC3, WMA, etc.

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WonderFox DVD Ripper Pro is a professional DVD ripping program that can easily rip any DVD (whether homemade or commercial) to all popular formats including MP4, MKV, MP3, WAV, H264, H265, Android, iPhone, and so on. It also lets you edit and compress DVD-Video efficiently. Download it to enjoy a fast and trouble-free DVD ripping experience.

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