I have a video which is much longer than any software indicates. YouTube says it is 18 minutes long, Windows says it is 49 seconds long, Windows Media Players says it is 49 seconds long, Windows Live Movie Maker says it is 50 seconds long, and Corel VideoStudio says it is 49 seconds long. The video is too long for YouTube, but I cannot edit the length with VideoStudio or Windows Live Movie Maker because it does not acknowledge the true length of the video! Please help!!! I will put details below, but please let me know if you need to know anything else -- Thank you very much

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Video extension: Originally .vob, but I changed it to .mpeg to edit in VS (I've done many times before, never caused an issue).
Corel VideoStudio Pro X2 version
Windows 7 Pro