There is also Vimeo, but they dont offer a white label solution.
You will have to host yourself your video to use the player of your choice without ads. A VPS with unmetered bandwidth can be a good solution to begin. I use some vps from scaleway.com for this purpose, vps performance are not awesome at all, but network speed is pretty good, without traffic limits and storage is cheap.
There is Wistia. When you embed videos on your site, you will enjoy full control over the branding, including the option to add social sharing buttons, a clickable call to action, even integration with marketing tools to collect viewers email and set up triggered compaigns .
Vast majority of hosting providers are in fact resellers. A reseller is just a middleman between you and the real hosting company. Since resellers depend on the company whose plans they resell, they very often don't have neither freedom nor responsibility for dealing with your problems.Your requests and problems are dealt within the extended period of time. The result is that you pay more for the services you get and you're dealing with the "wrong" person all along the way.