Welcome to cdf. Nobody has jumped on your question in over four hours because most of these guys compress (transcode). So we probably have one thing in common(?) ... we both display our movies on an HDTV via at least progressive scan output and hate any loss of resolution inherent with transcoded backups.
I, also, refuse to suffer loss of quality from compression. I have had backups that show 100% on both quality bars and when i got to CloneDVD's last page, wondered why the readout in the left pane does not state "Transcoder Disabled". I think it is because the Titles that I have removed come close to 100% but are not acutally under the size of the media being used when CloneDVD is set to DVD5. I always assumed that the data size was such a close shave to fit on a 4.38GB -R disk that the quality meter displayed an incorrect 100% readout by only a fraction of 1%. Maybe because it only reads two decimal points and not three which would be more exact?
So if the readout doesn't state "Target Size Sufficient, Transcoder Disabled" then I believe you are transcoding. For me, it depends on how important the movie DVD is to me. If I want a perfect 100%, I will go back and remove another title or track to get under the size of the media. Or I'll split the whole original onto two disks even if the data capacity burned onto both those disks is underutilized. Who cares when you can get Taiyo Yuden 4.7GB blanks for $0.70 US. (I hear some, in other countries, are still paying falsely inflated prices) Or I burn dual layer media. If it is just a "disk 2" bonus features, I'd be less likely to insist on zero transcoding. At any rate, the quality loss would be minimal for such a small amount of compression.
If the "close-shave syndrome" really bothers you, I have wondered if this would work: you could choose Custom instead of DVD5 and select a size a little smaller than 4.38GB for -R disks or 4.37GB for +R disks. Make your title selections until you get to 100% on the meter and then reset CloneDVD for DVD5 and then go to burn. Don't know if it works ... "I jus thunk it up by myselfs". :doh: You have to input the size in MB's, into the custome size area, instead of GB so the old 1024 rule applies ... never did this so another member might give you a safe but exact number to input in MB if you ask.