right from what i can see the codec is wrong, DX50 should say xvid, these players are ver psecific and picky.
what version of avi conveter did you use??
the thing is that your computer needs the correst bits, codecs in to use them for converting
i suggest getting this free proram from herehttp://www.mympxplayer.org/tool-vidrop- ... df785.html
called vidrop its easy to use and has presets all set up for your player type
download and install
once its open do the following
1. from the prest drop list select one of the "Generic rockchip " options
2. click the small button to the right of the green box - locate the movie/clip to convert
3. click the "convert" button
try this on a small clip for now , all the stuff needed for conversion should be in there