well, all in one player are those which is able to play almost all types of vedio.
I prefer VLC player it is able to play all type of video & audio & also network streaming.
If VLC is not able to play any type of vedio or audio than the final is the "K-lite mega codec pack" (Media player classic) Give it a try I it the player that i use want no player is able to play it will play that.
Baum-Darstellung