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WilliamWolfe-9904 avatar image
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WilliamWolfe-9904 asked ·

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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erinding-msft avatar image
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erinding-msft answered ·

Hi @WilliamWolfe-9904

How did you save PPT as an MP4 video file? Did you use File>Save as?
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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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WilliamWolfe-9904 avatar image
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WilliamWolfe-9904 answered ·

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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Thanks for the reply.
What's the file type of the audio file?
Please try to change the file type such as .wma to check if this is better.

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WilliamWolfe-9904 avatar image
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WilliamWolfe-9904 answered ·

Created a new MP4 using Export. Same issues. Slide timings are off and there are blips in the audio stream.

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WilliamWolfe-9904 avatar image
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WilliamWolfe-9904 answered ·

The Export function does not have an option for the file type to be used for the video file.

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You could make a copy of the audio file, then right click the copy, click Rename, then change the file type like .wma.
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If you could not see the file extension, please open File Explorer, in View, check File name extensions.
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