The Screen Recorder extension captures images of your screen and input from your microphone for the sole purpose of creating a "screen cast video" that you are able to download. The images and audio captured are not used or transmitted in any other way. As you use the extension, audio and video frames are captured and stored in your computer's memory. Then when you download the video, that information gets written to your computer's hard drive. The extension does not share any part of your video with any other computer. Whatever you do with the video after you download it is completely up to you.