Unhappy HD video player

Guys any suggestions on what is the best multimedia player on LG Optimus One P500.

I transfer my videos files from my Xperia Acro S to my LG Optimus One P500 because I gave it to my Wife.
However, the video files from the xperia acro s is not working on my LG Optimus One P500.
It's says that unable to play the video. And sometimes it plays but its super lag and it only plays the sound.

Is it because the video is on high definition.

Is there any options to have a video player that supports HD videos on our device.