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Fix PowerPoint Video Captions Not Showing for Others on SharePoint
Question details
The user added a VTT closed caption file to a PowerPoint video, but coworkers cannot see the captions when viewing the presentation via SharePoint, despite the CC button being visible.
- Product
- PowerPoint, SharePoint
- Device & OS
- not provided
- Scenario
- Sharing a PowerPoint presentation containing a video with VTT closed captions via SharePoint.
- Observed behavior
- The presentation owner can view the video captions perfectly, but coworkers opening the shared file on SharePoint can only see the CC button without any caption text.
Before troubleshooting, confirm whether your coworkers are viewing the presentation in the web app or the desktop client, as this heavily impacts how linked media files and captions are processed.
Check VTT File Permissions and Re-embed Captions
Ensure the VTT caption file is properly embedded and that all viewers have the necessary permissions to access it.
When sharing presentations containing linked media via SharePoint, the external files (like VTT captions) must also have the correct sharing permissions. If the viewers lack access to the caption file, the text will not load even if the CC button appears.
Navigate to the SharePoint folder where the presentation is stored. Ensure that the VTT file (if saved separately in the directory) has the exact same sharing permissions as the PowerPoint file.
Open the presentation in the desktop app. Select the video, go to the 'Playback' tab on the ribbon, and click 'Insert Captions'. Re-select the VTT file to ensure it is properly embedded within the presentation file.
Share the updated presentation with a single coworker or an alternative test account to verify if the caption text now appears when they click the CC button.
Force Viewers to Use the Desktop App
Bypass web-version limitations by instructing coworkers to open the file in the fully-featured desktop application.
Create and Share Presentations Seamlessly with WPS Office
Avoid complicated SharePoint permission issues and web-playback bugs. WPS Office offers a free, lightweight, and highly compatible alternative to Microsoft Office, ensuring your presentations and media work perfectly on any device.
- 1. Download and Install WPS Office: Visit the official WPS website, download the free version, and install it on your device.
- 2. Open your Presentation: Launch WPS Presentation and open your existing .pptx files directly without losing any formatting or media links.
- 3. Share Easily: Use WPS Office's built-in sharing features to distribute your presentation easily without complex permission configurations.
Frequently Asked Questions
Why does the CC button appear in my video but no text is shown?
This typically occurs if the web version of the application fails to load the external caption track, or if the viewers do not have the required permissions to access the linked VTT file on the shared drive.
Are video captions fully supported in web versions of presentation software?
Web versions support basic video playback, but they can struggle with dynamically loading separate VTT files. Opening the presentation in the desktop version usually resolves missing caption issues.
Can I permanently embed captions so they always show on SharePoint?
Yes. The most foolproof method is to hardcode or 'burn' the captions directly into your video file using a video editor before inserting the video into your slide. This ensures the captions are part of the video itself and will always display regardless of the platform.
