DVDShrink's Deep Analysis gives different results using it 1st in DVDShrink

[MackemX]

look at these two pics , just click the links to flick between the two

DEEP ANALYSIS (http://www.deano.dsl.pipex.com/backup/dvdshrink/analysis/default.htm)

play spot the difference :D, you can see how the percentages change but you can also see how the original title sizes also change!

the first was just the quick analysis and the second is the deep analysis

some have asked about using the deep analysis after clicking Backup but I think it's best if you are going to use a Deep Analysis to do it first so you see the true sizes of the DVD before distributing the space

I had noticed this when it first came out but overlooked it

[Kedirekin]

Interesting, though personally I don't think the difference is that significant.

If you leave everything on automatic, I wonder if the end result of the two approaches is different. I'm don't think I'm curious enough to check though.

[Sbofen]

Originally posted by MackemX
you can see how the percentages change but you can also see how the original title sizes also change!

the first was just the quick analysis and the second is the deep analysis

some have asked about using the deep analysis after clicking Backup but I think it's best if you are going to use a Deep Analysis to do it first so you see the true sizes of the DVD before distributing the space

I had noticed this when it first came out but overlooked it

Hrmmm, audio size is different, causing your percentantages to change - but I'm completely stumped why the audio would change:confused:

[MackemX]

Originally posted by Sbofen
Hrmmm, audio size is different, causing your percentantages to change - but I'm completely stumped why the audio would change:confused: are you talking about my pics?

the quick analysis doesn't give the true original sizes. Look at the extras and titles 7-9, it changes from 77MB to 96MB which is a jump of 19MB

This is just one example as others could vary less or some could vary more

I will try explain what could happen with a DVD with more of a variation. Look at the total video size of 4997MB of the quick analysis and you can see the deep analysis is 5013MB which is 16MB more but also note the total audio is now 826MB from 842MB which is 16MB less

it's just means that 16MB of the DVD is actually video and not audio. If I didn't do an analysis then that 16MB of video would also be reduced, so if my % was set to 63% automatic then that would probably result in 10MB, so I would undersize by 6MB or so

but imagine if the DVD reported the audio smaller than it was by say 30MB then than cannot be reduced. If it was at 63% then it would oversize by 11MB. So if the overall predicted output was any higher than 4477MB it would have risked oversizing. Add to that the fact DVDShrink may have underestimated the reduction of the video and couldn't reduce it as much, then this is why you may get some DVD's oversizing on the final output. It can also go the other way and undersize of course

it's really nothing to worry about as DVDShrink has set the default size to 4464MB so it shouldn't really affect it but you may get the odd freaky DVD

IC7 also guessed the video/audio sizes by doing a quick analysis and it was sometimes wrong that it had an effect on the overall output. That's why I used to use DVDToolbox first just to check video sizes but I dont bother now

but if for some reason DVDShrink gives you an oversized or undersized output then this will be one of the reasons why