Unable to upload video in PowerPoint

White, Zarah 20 Reputation points
2026-07-28T17:39:12.08+00:00

I cannot upload a video into powerpoint without the following error message

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Ive tried renaming the files at mp4 and m4v but had the same issue. I've also tried screen recording and trimming and saving anew video as mp4. Ive also tried uploading into photo and trimming and saving a new video however in photo it will not allow me to save the trimmed photo. I've tried moving the video to different folders and a different usb device.

Microsoft 365 and Office | PowerPoint | For business | Windows
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Answer accepted by question author
John Korchok 236K Reputation points Volunteer Moderator
2026-07-28T18:41:47.0133333+00:00

This is one reason I stay away from the 64-bit version of Office.

Video files have 2 formats: a container format (indicated by the file ending) or .mp4, .m4v, etc. and a codec. The dialog is letting you know that your videos have an incompatible codec. Your container format is fine, and resaving with a different file ending can't fix this.

Office prefers videos encoded with an H.264 codec. If your video came from an iPhone, it is encoded by default with H.265, which PowerPoint cannot read. You can try converting your video to H.264 using a free online convertor, then see if that will work in PowerPoint. iPhones can also use H.264 as a video default, which will prevent this issue in the future.

If you still have a problem, search on "64-bit" H.264 codec to get a 64-bit codec for your computer.

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