This subforum is for reporting misbehavior of BSPlayer not discussions about video formats or ripping.
What files are there on your DVD? Why do you think that the video is in MPEG4 format?
If there are *.mp4 files you must install a
MP4 Splitter first. Usual DVD discs contain MPEG2 video as *.vob files. In that case you need a
MPEG-2 Splitter and a MPEG2 Decoder.