The Export function does not have an option for the file type to be used for the video file.
PowerPoint 365 will not render an MP4 correctly
I am using Office 365 and have a PP with a 5 min audio file embedded. When saving as an MP4 video file the result has many errors, gaps in the audio etc. I have tried this on two machines. As a slide show under PP it runs fine.
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William Wolfe 26 Reputation points
2021-03-02T23:09:05.847+00:00 Created a new MP4 using Export. Same issues. Slide timings are off and there are blips in the audio stream.
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William Wolfe 26 Reputation points
2021-03-02T15:59:52.687+00:00 Tried the Export with better results. The audio is OK. Slide timing is off. When running the preview under the Export option, slide #2 transition time has increased by about 5-7 seconds. Don't think the others are affected, but have not done a detialed check.
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Erin Ding-MSFT 4,456 Reputation points
2021-03-02T09:59:29.55+00:00 How did you save PPT as an MP4 video file? Did you use File>Save as?
Please try to click File>Export>Create a Video to "Turn your presentation into a video", then select the video quality you want.
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