Hi agree with makd511.
Rockchip players only play .AVI files and they have to be a SPECIFIC screen resolution as well.
If you can upload the sample video to our site that would be great. We can take a look at the resolution size and also users can use it as a sample. You can upload it by going to the [
Downloads] on the left hand side menu bar, then choosing [
Uploads by Members] -->
here.