If you want to run a successful website hosting videos, you must host your own content. Your Business depends on hosting videos, the last thing you want is all your content gone cause the website you where parasitically living off blocks you and deletes your content.
Find a cheap hosting provider and make sure your videos are encoded to the smallest file size without quality loss, this will save you money on bandwidth usage. Do your homework and you'll find out how to do this.
Good luck
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