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Flash Video (FLV) files are created with Adobe Flash. You can insert FLV files onto any slide in your project. There are three types of FLV files you can import: Progressive Download Video, Streaming Video and Flash Video Streaming Service.
Progressive Download Video. These are external FLV files that load and play back when users view the video. (The video will begin playing as soon as the first part has been downloaded and cached to the user’s computer.) Since the video is external and not actually inserted into the project, it’s relatively easy for you to update the video content.