FYI: Undersizing on Mindhunters R1

[JFerguson]

Using CCE v2.70.02.01.

I sometimes oversize rebuilds due to the fact that I can shrink menus in post-processing. I directed DVD-RB to rebuild this DVD to an estimated 4.45GB in size using:

TargetSectors=2305822

This was derived using the ratio TargetSectors=2236400 = 4.32GB. I size DVDs to 4460MB and figured another 101MB gained from post reduction, so:

(4460 + 101) / 1024
-------------------- * 2236400 = 2305822
4.32


Anyways, I got a result of 4.21GB...from 4.45GB = 245MB undersize. This is unusual as the above formula hits the target precisely probably 80% of the time; the other 20% it's maybe off by 10-30MB at most.

I read through the other thread / debate on undersizing and don't want to start anything here - I leave DVD-RB CCE settings at its defaults. I blanked the extras, so the movie compression is around 80%, but bitrate is high at 5200kbps.

So, this is maybe the CCE sizing bug and/or saturation? Just wondering - thanks...

[RIPRECOBACK]

Probably, yes.

Especially if average bitrate reported by DVD-RB is relatively high and reduction is quite low, it's probably due to the underzing bug/segment saturation of CCE 2.7.x.x versions.

The thing I do, if you have left space (so DVD-RB isn't going to show up the message 'source already fit's on target' is a futher increasement in targetsectors.

You can also use another encoder such like HC, but seen the quality of CCE I don't recommend this.

Also using 2.66/2.67 versions of CCE doens't seem to have these kind of problems.

Also use MIN_BITRATE=0 and use RB-OPT to set a higher MAX_BITRATE can help. Saturation can be partly killed by especially setting MAX_BITRATE to a higher value.

Be aware not to exceed limits regarding DVD-specs.

Hope this helps.