DVD Burn Assistance?

[cheebacheeba]

A few days ago I had a dvd burner installed.
I have managed to burn off HUGE amounts of data, comics, music...etc, and also to burn video files (eg - camera stuff and downloaded clips) onto a dvd, which plays just fine...looking only a little stretched, as I would expect from avis - but overall acceptable.

The PROBLEM - Commercial dvd replication.
The product came with NERO for burning, I was also told to have a look at "dvd shrink", which I have done.
Thus far, I have tried ALL of the following under both programs, one by one:
*Direct dvd to dvd
*dvd to pc to dvd
*Both of the above after removing subtitles and extras
*Both of the above, at both 8X then 4X, the lowest speed.
*"compressing" a little
Also, with dvd shrink, I have selected some kind of option that apparently looks over the data extra carefully, basically resulting in a burn that took about 3 hours, on 4X.

So, they seem to burn ok, except for one thing...when I play the movies themselves, every 5-10 seconds, they'll look as though they have a slight glitch, in conjunction, the sound will go a little funny just over the time this interruption is evident on the screen.
This happens with the copies I attempt to make with both my commercial dvds, and even with my uh....backup copies.

**NB: I endorse piracy in no way whatsoever, and only intend to make "backup" copies of movies that I own, for personal use**

This is the dvd burner in question:
http://www.liteonit.com/ODD/English/...e_shw1635s.asp
...and my current system specs are described (to some extent) beneath here.
So, if there's any suggestions anyone has, or explanations for why I might be having this problem, answers would be appreciated. Save the bullshit wanna-be "funny" replies for other threads, legitimate info only please.
Thankyou.

[newb]

I use the same thing....dvd shrink and nero and usually don't have problems.If i do encounter a problem its most likely not enough free space on the hard drive.You should have at least 6 gigs free.Or it could just be the DVD's themselves.Sometimes certain ones work for shit.

[zwoti]

i (in no way) condone copying dvd's

[cheebacheeba]

All I know is that they SEEM to be a brand called "BP", theyre white, and there's just over 23 gig spare on my C:drive.
So, would you say it's the dvds, the burner, or the pc?

[newb]

I'm no expert....i would try a different brand of DVD first.
There is a great site for all kinds of help....just never mention commercial DVD's....even for your own personal use.

http://www.videohelp.com/

[Tat2]

Never buy cheap-assed media. They're nothing but trouble and are prone to the layers "seperating" (aka/disk rot), You also will find one or two that cannot be written onto or formatted in a large container of 30-50. I recommend staying with Verbatim, Maxell or Memorex.

[MisterSadistro]

Are you ripping the DVD with ifoedit or just directly copying the files "as is" to your hard drive and burning them like that ? I can't condone visiting DVDR Help to help you I'm afraid :D
CK