Does this happen across devices? Also, you can try these steps from our Help Center article: https://goo.gl/Q9UCB8 . Let us know how that goes!
@TeamYouTube I was trying to upload a video that I recorded on my phone to YouTube and it said Error uploading video:(pic.twitter.com/OOUOMLgyvj
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I’ve only done on my phone
@TeamYouTube
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and video games 