After 9 years (as of this post) since the latest version of MoonShell released, the SD-compatible alternative to MoonShell is finally here!
Introducing the Rocket Video Player! It's the video player that plays video files with an extension called ".rvid", bringing you the ultimate in picture quality, thanks to it's lossless frame data.
If the video is uncompressed, you may need a big enough SD card....
[Release] Rocket Video Player - Play videos with the ultimate in picture quality