Help! Sunplus based video player lags and freezes :(
 

I need some help guys, I dunno what to do. I have a player like in my avatar and no matter how i convert the videos (this one plays mp4 files), after 30-40 minutes of playing, it starts hanging, the sound goes out of sync, and the video freezes for a few secs then continues. It's really annoying, barely watchable. I tried SUPER converter, the software from the CD, media coder and lots of other tools. It simply doesn't work well. How can I solve this? I tried lowering the bitrate, the quality the frames, nothing.

Help is really appreciated. Anyone with sunplus pmp can confirm this behavior?

download mp3 player utilities 3.68 no freezes the video
exept the resolution is very small

I hope will you help
Marco16