Video assets can be added to some Playground templates. If you've selected a video compatible ad template a video icon will appear inside the Wizard panel.
To add a video simply drag and drop your video asset into the wizard panel. Your video will upload and be converted to the right file size/type for ad serving. Once uploaded you can immediately preview your ad with its video.
The Wizard accepts MP4 formatted videos at standard 16:9 ratios of various file sizes up to 15mb. For best results use 1920x1080. Handbrake is free, open source software for Windows and Apple Mac OS that allows you to configure these properties to ensure your video is optimised for mobile. Handbrake will also convert .mov (and other file types) to .mp4.