It won’t work if you upload the you presentation directly onto Youtube. You have to think about the format. It seems that Google and Microsoft agree like cats and dogs. You can use a powerpoint to video converer. It can convert your presentation to video without losing any effect.

Step1, Download a Powerpoint to video converter and intall it onto your computer.

Step2, Convert the presentation to video format supported by YouTube.

Step3, Upload the converted video to Youtube.