CloneDVD2 and acceptable compression %

[videobruce]

For anyone that uses Clone DVD2 and has a critical eye, what is the lowest % when artifacts become visible? IOWs', just where does the degradation become evident?

[ricoman]

I've been using cloneDVD2 for years and have a 50" HDTV and an OPPO upconverting DVD player and will go up to 70% compression with no obvious reduction in quality. You will hear others say that they won't go under 90% but I can't notice a difference. If you go out of your way making comparisons you might notice something but it is minimal and you won't notice it if you are watching a movie. Those that claim to see a difference do tests by blowing up a very small portion of a dark or complicated scene to inspect it. But who really does that when viewing a DVD? I am more than a casual user and have hundreds of backed up movies, 3 burners and several different burning softwares including Rebuilder that I use for long movies that require heavier compression. I use CloneDVD2 for 98% of everything else up to 70%.

[videobruce]

70% seems awfully low. I did remember seeing a difference with a higher %, but don't remember just what it was when I did a quick compairison (not enlarging anything as you stated).

[Baldrick]

please post dvd backuping in the dvd to dvd forum and not dvd authoring forum. moving you.

[videobruce]

Sorry, too many choices...............

[ricoman]

70% seems awfully low. I did remember seeing a difference with a higher %, but don't remember just what it was when I did a quick compairison (not enlarging anything as you stated).

Yes, 70% is pretty low, that is why it is my limit. But any difference is barely noticeable, if at all, with normal viewing. I guarantee that if you ask your friends what they think of the quality, they will say it's great because they won't be searching for defects. You will only notice anything if you are looking very closely, but who watches movies like that except for the most fanatical discerning individual. You will simply have to experiment yourself, everyone is different, but start with 70% and see if it bothers you. If so, split it to 2 discs without compression or use DL media. I do both sometimes.

[guns1inger]

The is no absolute number. It depends as much on the quality and encoding used in the original file as it does on what is acceptable to you. I use DV Shrink, which uses the same transcoding method as CloneDVD. I have done some discs where coming down to only 90% made for visible artifacts because the original bitrate was already fairly low. Every source is different.

[videobruce]

I have done some discs where coming down to only 90% made for visible artifacts because the original bitrate was already fairly low. Every source is different.

Interesting.
Any way one would know that in advance so as to judge what might be acceptable for the copy instead of trial and error?

[lacywest]

I go by the colors ... red ... yellow ... green ... LOL

But actually .... I use CloneDVD2 to rip the DVD and remove what I don't want.

I then use DVDShrink 3.2 or ... if I have time ... DVD Rebuilder Pro.

If I'm in a super hurry and quality is not that important ... I will use CloneDVD2 to do everything ... if it is in the yellow region.

Yesterday ... I ripped with AnyDVD and CloneDVD2 and then tried to use DVDShrink 3.2 to the compression ... but it didn't want to compress it ... the movie was CRANK.

I did compress it ... I used Cyberlink PowerDVD Copy 1.00.0222 ... instead.

It also does an analysis ... and then does the encode thing and then burns to a DVD.