This is the best Utbe-to-MP4 converter I've ever used. It's fast and accurate. With other converters, it happens sometimes that there's a sync problem with the audio. Not with this one. I donated $10 and got the PRO version. Well worth it!

UPDATE: I'm still diggin this downloader. Dishita keeps it updated and he's super responsive to any questions you may have. I'm an educator that likes to embed video clips in powerpoint presentations. I've yet to run across a video that I couldn't convert for use in my work. And, as always, sign-up for the PRO version. Easily worth the price of a Cup o' Coffee!