That's odd! This troubleshooter covers common uploading errors and how to fix the issue: https://goo.gl/Q9UCB8 . Hope this helps.
@TeamYouTube I haven’t been able to upload any videos since last night. I’ve never changed video formats. I’ve always used mp4. It continues to say it can’t convert the video file
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. 22 From Arizona
Servant of Christ! Pop Punk is the Game