Burning x264.video filesusing convertx to dvd

hey everyone! I’m having a little problem burning a x.264 video file (type Mpeg -4) onto a dvd. If i play the file on my PC using VLC player everything is in sync(sound and Video). But when i burn it to a dvd and it is converted to VOB files, the sound become out of sync with the video content. This does not happen with AVI files. Can anyone help me so i can burn it to a dvd so i can watch it on my stand alone dvd player. Thanks in advance!!