Title: Making videos play successfully in PowerPoint for the web - PowerPoint
Headings: Making videos play successfully in PowerPoint for the web
Making videos play successfully in PowerPoint for the web
Keep your browser up to date
Videos that are inserted with a desktop version of PowerPoint
Unsupported video format in PowerPoint for the web

Content: Making videos play successfully in PowerPoint for the web - PowerPoint
Making videos play successfully in PowerPoint for the web
If you can’t view a video in PowerPoint for the web, there’s most likely an issue with the type of video file. If the video is a Flash or WMV file, you’ll need a player to see it. However, if you’re using a tablet or other device that can’t run the player, you’ll have to open the presentation in the desktop version of PowerPoint (by using the Edit in PowerPoint command in PowerPoint for the web). Keep your browser up to date
Recent videos are likely to be in a format that plays directly in your browser, as long as your browser is up to date and supports this feature (known as HTML5). So another way to get the video to play is to go to your browser’s website and get the most recent update. If the video still won’t play, your fallback is to open the presentation in PowerPoint. If the video is a Windows Media or Flash video (.wmv or .flv file), you can play it after you install Silverlight (to play Windows Media) or Flash Player (to play Flash). You can play video and audio in Reading View and Slide Show View if you have Silverlight installed. You’ll need Flash for videos that are linked from a website. Keep an eye on the file size, because PowerPoint for the web won’t insert large media files.