LuJoSoft ThumbAllMovies is a tool that creates and saves thumbnails (screenshots) of movie or video files to jpeg files.
You can define the number of columns, rows, the width total size of the image and the quality of the jepg image for the size of the output. You can also chose to use the original resolution of the movie.
These file formats should be supported: .3gp, .3g2, .asf, .avi, .dat, .divx, .dsm, .evo, .flv, .m1v, .m2ts, .m2v, .m4a, .mj2, .mjpg, .mjpeg, .mkv, .mov, .moov, .mp4, .mpg, .mpeg, .mpv, .nut, .ogg, .ogm, .qt, .swf, .ts, .vob, .wmv, .xvid.