Tasker video player, allows you to create a floating window video player.Simple setup a text file on the root of the sdcard ( sdcard/videofile.txt )
in this file you have the full location to the video file then a delimiter " ~ " and the location of the video window or the wording full for full screen playback.
--- LOCATION NOTES -----
Location is left,top,width,height
E.G
sdcard/myvideos/myvideofile.3gp~250,100,500,500