How to check quality of "shrink" programs?

vbimport

#1

I have now a main movie title with only English audio at 55% compression reported by DVD Shrink. Until now I did not use Deep Analysis or any other quality enhancements.

I am willing to spend the transcoding time now and run the shrink in few quality modes and see if there is improvement. Maybe even try another transcoder.

Is there a quick way to “see” the difference in quality? Any tips?
(watching the movie 3 times start to finish is just to much to ask, hehehe)


#2

Based on my tests, I see no changes in video quality with the “detailed” analysis at normal speed and magnification. Course you must do a blind test (have someone else put in the DVD during playback).

Must be a very long movie if you’re @ 55% with only the main title and AC 3/6 or 3/2 audio. No need to include DTS audio. I could easily see the quality improvement between a 60% and 80% disc. That’s why I only transcode to one DVD-5 disc if the quality is higher than 80%. 75% or lower movies are split into two DVD-5 discs.


#3

i can usually notice a difference at less than 90% compression. any lower and i usually split it with the freeware dvdfab. i like shrink less for its compression abilities and more for its ease at selecting just the main movie…


#4

there’s not really much you can do to “see” the difference other than seeing it with your own eyes. you can try doing things like skipping to scenes with faster action/more detail, but other than that, it’s pretty much a manual process.