Make the player bigger

Hello!

I think the player is a little bit small.

If I make the player bigger, is the video bigger too? It should´t be squeezed.
My Idea was that: All videos have the big player. But only the good quality videos are stretched in the full player.
How to realize?

If that don´t works can I make it widescreen like youtube?

you can change the video player size in the admin panel
To big of a change will make the videos pixelated if they are not high RES videos