Video thumbnails

I was just wondering if it is possible to set a custom thumbnail for a video file on the USB stick. My two-year-old uses the stick to watch videos on a tablet while we drive and it would be great if I could use the DVD cover artwork as the thumbnail for a video file so that she can browse more easily.

Does anyone know if this is possible?

No it is not possible. The drive pulls a random frame from the video for the thumbnail. No way to change it. 

I have not tried the connect stick app yet, but they do have programs that will append the DVD cover art to the file so that it shows up.  I have not verified that it works with the connect stick or not.  I have used the MetaX program in the passed to add the meta data (cover art etc) to the file and when I look at thumbnails it shows the cover.