Video won't play
 

I have a rockchip mp4 player, when i put videos on it, it comes up with the message "file not exist".
My friend put some videos on it at his house, which do work, but when i convert the videos into the same format as he did, they wont work for me.
Does anyone know what i'm doing wrong?

It looks like a player I have.
Try using viDrop from here to convert your videos --> viDrop - free open-source converter for RockChip players.
Use the video frame size of 320 x 240 and see if that plays on your player.

Let us know of the result.