Open your PowerPoint Presentation
Then follow the steps given below:
STEP 1. Click on the File tab to show file options.
STEP 2. Scroll down and select Export and navigate to Create a Video.
STEP 3. Select your video settings preference like video quality, timings and narration, video size etc.
STEP 4. Click on Create a Video.
STEP 5. Choose a filename, save the location and video format.