Playing Undf A Player Which Can Play " Undf " Formatted Video Files?

A player which can play " undf " formatted video files? - playing undf

I am uploading a movie that is the format of the UNDP. iv tried to play
on VLC media player, but always gives me the message:
"VLC is not using video or audio format not supported" UNDP. "Unfortunately,
there is no way to resolve this problem. Help / propose to find one
Players positioned to play such files. Please, please .....