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1. On the 'File' menu, select Save to ensure all your recent work has been saved in PowerPoint presentation format (.pptx).
2. ClickFile Click File > Export > Create a Video.
3. In the first drop-down box under the 'Create a Video' heading choose 'Standard (480p) in the export settings. This reduces the file size and ensures that the file exports quickly and will upload more easily.
4. The second drop-down box under the Create a Video heading tells whether your presentation includes narration and timings. If you haven't recorded timed narration, by default the value is "Don't Use Recorded Timings and Narrations". The default time spent on each slide is 5 seconds. You can change that timing in the "Seconds to spend on each slide" box. To the right of the box, click the up arrow to increase the duration, or click the down arrow to decrease the duration. If you have recorded a timed narration, by default the value is "Use Recorded Timings and Narrations"
5. Click 'Create Video'.

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