I don't know if you have tried this, but in case you havent, I would use a program like "Format Factory" or "Adobe Encoder" to recode your videos to a more standart format. Let's say use the normal mp4 template. And try again.
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VoyChelada009
There is a member "voyzex" that seems to be having an issue with uploads too. He posted he went from 5% to 71% over the last 24 hr.