Freezing and pixalating

[Rob1352]

I have a Emprex dual layer DVD burner.

I use Anydvd, dvd shrink and dvd decrypter.

I have not got a problem copying movies but when I come to play them back
after about 20 to 30 minutes they start to pixallate then freeze up.

Would be gratefull for any help or advice.

I have tried Datawrite yellow 8 x dvd-R

Any recomendations???

Changed media to Verbatim 8x dvd+r

used Anydvd & Clonedvd2

Got a great copy no freezing or stalling.....

Thanks everyone.