DVD Shrink (No Compression)?

[marclile]

I was reading one of the forums over at doom9.org and a question was asked that got me thinking. Someone asked if you set the compression to 100% in DVD Shrink, does it still transcode the video?

The general opinion was that it did not. My question is, for anyone who might know, if it actually doesn't transcode or do anything to the origional video, then why, when I'm making a backup with no compression, does it still take 15 extra minutes on an "encoding" stage before it burns.

I would think that if your not using any compression, it wouldn't have to go through that stage.

BTW... I'm doing "movie only" backups so I guess the 10 or 15 minutes of "encoding" might be when it's recreating the VOBs to be only the movie but wouldn't think that should take that long to just do that.

Can anyone shed any light on this for me? Thanks...

[shelbyGT]

it has to put it on your harddrive and take away the css and make it region free and take out extras and yada yada...

[garryheather]

You're right about the compression aspect, although the rebuilding of the IFO files doesn't take that long.

What is probably taking the time is the rebuilding of the VOB files without the content you're stripping, like extra subtitles, audio channels you won't use, etc. A kick-ass hard disk or two can make all the difference here - especially if you've got 2 fast drives on your system and can go from one source drive to another.

If a movie only process will go onto a -/+R without any re-encoding, you will see times more around the couple of minutes mark, or with transcoding probably in the 15 - 20 minutes mark. Anything else is probably just stripping those extra streams.

[marclile]

That sounds right then. I wasn't really concerned with how long it was taking, just wanted to make sure i wasn't loosing any quality when I choose "no compression".

When I said 10 or 15 minutes for the encoding stage, that is probably really high. Normally, if I'm doing "movie only" with no compression, I can usually finish a backup, from start to finish, in about 20 minutes.

I think that answered my question. Thanks guys...

[handyguy]

If its a dvd5 & fits on one dvd just use dvd decrypter ISO read, then change it to ISO write & you get a perfect disk copy.

[Gazorgan]

I do it all the time on DVD5's. Seems silly, but I want to strip out the warnings and commercials. I strip out the subs and unwanted audio also. Why? Because I'll never use it and if I really need it I'll get the original back out. It also eliminates problems with the last few 100 MB's on a disk.

Shrink doesn't do any transcoding when you are at 100%. With a little work you can get a lot of DVD9's down to 100% (trim intro/credits, no subs, 1 audio only).