I burned an MP4 torrent of a TV show to a Verbatim Digital Movie DVD-R disc
using Sony's Digital Architect Studio 5.0.

The video looks fine but would not fast forward on a friend's JVC stand alone DVD player.
The MP4 fast forwards in VLC Player but not in WMP. I think I fast forwarded it in my
Panasonic DVD player before giving it to my friend, but am not sure now as I burned a
few discs rather late last night. (My friend has not checked the others.)

What is causing this problem?

Is there a setting I'm missing that can prevent videos from being unable to fast forward?

Thanks for any help.