To play video on specific player, you must set the correct framerate & resolution for this kind of player. And of course, the player must be able to play AVI (XVID), and NOT AMV files.
This is the player that I have:
http://www.mympxplayer.org/album_sho...php?pic_id=403
And I play AVI files at 22-24 FPS with XVID video compression 320x240@400kbps, and MP2 audio compression @128 kbps.
As I see from the link you provided, the player is not capable of playing AVI files (only AMV etc...), and this explains why viDrop and other similar software does not work for you. And I think this is not RockChip player.