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In 2026, when I save PPT as MP4, the video comes out pixelated. Older files that I successfully saved as MP4, now come out pixelated if I re-export.
A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Please visit the web site of your computer manufacturer to see if there is a recent update for your video driver.
If that doesn't fix the problem, please uninstall Office, then reinstall from the Subscriptions page of your Microsoft account.
Please try an Office Repair. The Online Repair option is more thorough.
The repair did not work. Same result when saving as MP4