DVD Shrink Compession-Please help!!

[Jonathan]

I just have a few short questions that I hope someone can answer:

1. Is there an ideal "target" compression threshold of like 70 or 80%? At what point does it noticably affect your picture quality?

2. Why do movies of the same length result in different compression settings? I backed up two movies yesterday(movie only) and each film was 120 minutes. One had a compression of 90% and the other was 77%. I used 5.1 on both, no dts. everything else the same. Am I missing something?

Advice greatly appreciated!!!

I'm sorry, but I accidentally posted this in another forum. I think this is where it should have been.

[joe bananas]

1. The finished product will depend on what your veiwing your movies on - big or small screen. The highest ive gone if 65 and still looked great on a 80inch projector. And anything below 90 always use deep analysis.

Check this site http://dvdshrinktest.shows.it/.

2. Movie size is all to do with bitare. An action scene uses a lot more data than a talking scene etc etc etc ... also if the producer finds the dvd has to be a dual layer then they may as well take advantage and up the bitrate.

Hope this helps

[wretchedhalo]

what they said..

plus it really depends on the movie to how the compression effects it. Say if its a cartoon or whatnot, you can compress heaps without noticing. I had Family Guy Season 1 at about 58% and literally dont notice anything at all. You tend to notice is around 70-80% on older movies and movies which dont have that good quality in the first place. Newer movies, i.e. good quality, you dont really see anythign from about 60-70%. Really depends on how fussy you are.

[Jonathan]

That helps a lot. Thanks for the replies. I backed up E.T. at 77% and couldn't tell it from the original. DVD Shrink is an excellent piece of software!!