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ulrik87 Author

Level 1

4 points

Keynote 10 Cannot insert video in presentation

In an old presentation an inserted video .mov file wont play. I also cannot insert a new video and get the error "cannot decode" Same problem with a mp4 video

MacBook Pro 13″, macOS 10.15

Posted on Jun 20, 2020 6:24 AM

Top-ranking reply

Gary Scotland

Level 7

25,898 points

Posted on Jun 20, 2020 8:04 AM

Catalina can only accept 64 bit applications and media files, therefore some older filetypes are no longer compatible, check the list here: incompatible media in Catalina

The only video filetype that can use alpha channel with Catalina is Apple Prores 4444

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Keynote 10 Cannot insert video in presentation

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