Office Settings & Configuration

How to Fix PowerPoint Video Having No Audio After Export

Khadija Khan Oct 12, 2026 870 views

Question details

The user needs to resolve an issue where an exported presentation video lacks sound, despite the audio playing correctly during the standard slideshow on their computer.

How to Fix PowerPoint Video With No Audio After Export

Product: Microsoft PowerPoint
Device & OS: not provided
Scenario: Exporting a multimedia presentation into a video format (like MP4) for playback or assignment submission.
Observed behavior: The audio plays correctly when previewed in the presentation software, but the final exported video file has no sound when played locally or uploaded to platforms like Turnitin.

Before you start

Before exporting your presentation, test your slideshow in presentation mode to ensure the audio plays correctly from start to finish and verify that your system speakers are not muted.

Solution 1Recommended

Configure Audio to Play Automatically

Ensure that all audio clips in your presentation are set to play automatically and that their volumes are properly adjusted before starting the export process.

When audio is set to play 'On Click', the video rendering engine may skip the audio entirely during export. Changing this setting to 'Automatically' ensures the sound is embedded into the video timeline.

Select the Audio Clip

Open your presentation and navigate to the slide containing the audio clip. Click on the audio icon to select it.

Open Playback Settings

On the top ribbon, click on the 'Playback' tab that appears under Audio Tools.

Change Start Behavior

Locate the 'Audio Options' group, click the 'Start' dropdown menu, and change the setting to 'Automatically'.

Verify Audio Volume

Click the 'Volume' icon in the same tab and ensure it is set to 'High' or 'Medium', and is not accidentally set to 'Mute'.

Play Across Slides: If your audio is meant to be background music for the entire video, make sure to also check the 'Play Across Slides' option in the Playback tab.

Solution 2

Re-export Using a Supported Format

Export the presentation using a widely supported format like MP4 to prevent audio codec failures during the video creation process.

Solution 3

Address Turnitin and Platform Compatibility

If your exported video plays sound on your computer but has no audio when uploaded to Turnitin, you may need to convert the file to meet strict platform requirements.

Export Presentations to Video with Audio Using WPS Office

WPS Office provides a seamless and reliable way to create presentations and export them as high-quality videos without losing your embedded audio or narrations.

1. Open Your Presentation: Launch WPS Presentation and open your existing .pptx file containing the audio.
2. Access Export Options: Navigate to the 'Tools' tab on the top ribbon and click on 'Export to Video'.
3. Adjust Settings: Choose your preferred video format (such as MP4) and adjust the export quality and directory settings.
4. Render the Video: Click 'Export' and wait for WPS Office to render the video, ensuring your audio is perfectly captured and synced.

100% free, lightweight, and fast installationSeamless compatibility with Microsoft PowerPoint (.pptx) formatsBuilt-in tool to reliably export presentations to MP4 format with synchronized audioFamiliar user interface that requires no learning curve

microsoft office alternative - wps office

Frequently Asked Questions

Why does my audio play in the presentation but not in the exported video?

This commonly happens when the audio clip is set to play 'On Click' rather than 'Automatically'. The video export process does not simulate mouse clicks, so the audio track is skipped. It can also occur if the audio file format is not fully compatible with the video rendering engine.

What is the best video format for exporting a presentation with audio?

Exporting your presentation as an MPEG-4 Video (.mp4) is highly recommended. MP4 offers the best balance of high-quality video, reliable audio codec support, and broad compatibility across different devices, media players, and online platforms.

Why do my original audio files need to be in the same folder?

If you are using an older presentation format or if your audio files are linked rather than embedded, the software relies on the file path to find the sound. Keeping the audio files in the exact same folder as the presentation file prevents broken links during the video export process.

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