I have a big problem. When I try to listen to a movie... the player plays it well until the 5 last minutes and then the image went jerky and the sound too. It doest it almost everytime I listen to the entire disk. If I open the DVD player and fast-forward directly to the part that seems jerky, it plays fine. I assume It's not the SVCD but the player.. can someone help me

(it does it with every VCD, SVCD I tried... even If the have 30 min on it or 60 mins)