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How to Fix SharePoint MP4 Video Playing with No Audio in Browser
Question details
Users are experiencing an issue where MP4 videos hosted on a SharePoint site play without sound when viewed directly in a web browser, despite the audio working perfectly when the files are downloaded and played locally.
- Product
- Microsoft SharePoint
- Device & OS
- not provided
- Scenario
- Streaming an uploaded MP4 video file directly through the SharePoint web interface.
- Observed behavior
- The video plays smoothly in the browser's media player, but there is no audio output. Downloading the file and playing it via OneDrive or a local media player works correctly with full sound.
Before altering any files, verify that your computer's system volume is turned up and ensure that the specific web browser tab playing the SharePoint video is not muted.
Check Browser Compatibility and Update
The web browser may be outdated or experiencing cache issues that prevent it from properly decoding the audio stream of the video.
Open the same SharePoint video link in a different, up-to-date web browser (such as switching from Google Chrome to Microsoft Edge or Mozilla Firefox) to determine if the issue is browser-specific.
Navigate to your web browser's settings menu, select 'Help' or 'About', and allow the browser to check for and install any pending version updates.
Access your browser's history or privacy settings to clear cached images and files. Once cleared, restart the browser and attempt to play the SharePoint video again.
Re-encode the MP4 Video Audio Codec
The SharePoint web player relies on standard HTML5 web protocols and may not support the specific audio codec used in the MP4 file. Converting the audio track to a universally supported format like AAC usually resolves this.
Contact Your SharePoint Administrator
If standard encoding and different browsers do not resolve the issue, site-level configurations or server-side media processing errors might be to blame.
Try WPS Office for Seamless Document Management
While troubleshooting SharePoint video playback issues requires specific web and codec adjustments, managing your standard office documents shouldn't be a hassle. WPS Office offers a free, lightweight, and highly compatible alternative to Microsoft Office for all your daily productivity needs.
- 1. Download the software: Visit the official WPS website and download the free installation package tailored for your operating system.
- 2. Install WPS Office: Run the downloaded installer and follow the simple on-screen instructions to set up the software on your device.
- 3. Open existing files seamlessly: Launch WPS Office and instantly open your existing Microsoft Office files without losing any original formatting or layouts.
Frequently Asked Questions
Why does my MP4 video play sound locally but not on the SharePoint web player?
Local media players on your computer have a wide range of built-in codecs and can decode complex or proprietary audio streams. The SharePoint web player relies on the web browser's native HTML5 capabilities, which typically only support widely accepted standard codecs like AAC.
What is the best video format for SharePoint browser playback?
For maximum compatibility across all browsers and devices on SharePoint, you should use the MP4 container format, encoded specifically with H.264 for the video track and AAC for the audio track.
Can I force SharePoint to play unsupported audio codecs?
No, you cannot force the built-in SharePoint web player to decode an unsupported audio track. The file must either be re-encoded with a supported web codec (like AAC), or viewers must download the file to play it on a local media application.
Does clearing the browser cache actually help with SharePoint video audio issues?
Yes, occasionally. A corrupted browser cache can cause media playback scripts to fail. Clearing the cache forces the browser to re-fetch the SharePoint media player components and the video file data, which might resolve sudden or unexpected audio glitches.
