I am experiencing a problem loading video on to my mp4 player.
A picture of the player is here:
http://www.mympxplayer.org/album_showpage.php?pic_id=654
I have tried using

amv convert tool which came with the player, and I have also attempted to use the amv convert tool which was included with the player also. I have been able to get the amv file on the player, but when I try to click on it I get nothing, when I tried to drag and drop the avi file directly in to player from my computer, it went on ok, but when I tried to play it, I got an error message saying invalid format. Any thought/recommendations would be greatly appreciated.

You have linked to an RockChip-MP4-Player: these kind of players are using the program AVIConverter to convert videos into the right format: xvid-coded avi-files.

The resolution should be 320x240 pixel, the framerate maybe 20fps or 24fps.

You should better give viDrop a try, because its much better then any AVIConverter. Download it here from Downloads/Tools. Install it and use the pregiven Preset "Generic Rockchip 320x240 high.ini" inside of viDrop - this should work for this kind of players.

I apologize for the delayed response, this has fixed my issue! Thanks for the helpful info, and the program.