Hi,
at first give viDrop 0.55 a try and use the Profile "Rockchip 320x240" inside of it. If this won't work too, try my posted values in this thread:
http://www.mympxplayer.org/solved-co...r-vt10097.html
Your 2.8 inch screen is a little bit bigger than 2.4 inch: you may change the resolution to 340x240 pixel instead of 320x240 in a third trial.
As an extra Mencoder-Parameter in viDrop i'll prefer (only at the third trial!): -vf-add expand=340:240:-1:-1:1
Or some players with B-Frames=0 needed the video to be flipped and rotated: -vf-add expand=340:240:-1:-1:1,rotate=2,flip
Good luck and
rgrds, lca77