That actually makes sense - their service might allow you to download something in a special format that you want, and the website uses a video to preview it. F

That actually makes sense - their service might allow you to download something in a special format that you want, and the website uses a video to preview it. For example a video editing or animation generation tool. You might want to save the definition so it can be edited again later. Then people are ended up with just the preview and have lost their work.