Wow! How big is the file? What format? Is your connection or computer also really slow?
The file's format is an .webm that was converted to an .mp4. My connection to the internet is crystal clear, and there's only brief problems once in an while that are easily fixed.
I think the conversion may have something to do with this. I'll try to upload the file in it's original .webm format and see what will happen.
