Can HTML5 video-tag handle 1000 users streaming "large videos" in my website?

I am creating a website for my company, it will let people (2000 users, up to 1000 streaming simultaneously)..... they will stream business videos (400 videos total, 1gb each). Like a youtube for my business videos.

Is it okay to embed the videos using HTML5?

I mean, will the server handle the traffic without problem? or should I use some "advanced-streaming-script-to-do-something-special-for-handling-traffic"?

Is a simple HTML5 video-tag good?


My dedicated server is:
Dell PowerEdge R200
CPU: DualCore
Disco Duro: 2 x 250GB
Memoria RAM: 8GB
Month Traffic: unmetered
Ancho de Banda: 100Mbps Full-Duplex