Heavy under/oversize problems. And I just can't fix them.

[Seijuro]

I know this is a common issue around here, but my case is special, as I've tried almost everything, including the guide recommending changed overflow and quantization settings.

My story starts with a PAL DVD movie I wanted to rip. Everything went fine in encoding, I was (and still am) using Gordian Knot 0.35 and XviD 1.12, targeted for 700MB...but it always came out at 750MB. And yes, that's with audio track etc. already taken into the GK calculation. So no errors there. I tried changing a few settings, it wouldn't help. So I simply targeted at a lower size that would lead to my desired 700MB after taking oversizing into account. Not a perfect solution but it worked and I thought I wouldn't encounter such a problem too soon again.

Now, I've got another set of PAL discs, TV episodes. I tried ripping Episode 1, and instead of 350MB, it came out at 250. Again, I changed different things, overflow strength etc from 10 to 20, also updated to XviD 1.13. Surprisingly, it worked the second time around. Now, I tried encoding another episode from *the same DVD*, with *the same unchanged XviD settings*...and it comes out 250. I tried the encode twice.

I am going insane with this. Does anyone know what I may be doing wrong? Are there any other possible causes for over/undersizing?

Help would be MUCH appreciated.

Thanks.

[Ranguvar]

http://forum.doom9.org/showthread.php?t=92046

Read it several times over. Took me about half an hour to fully grasp it (:P)

Go into your Xvid options. Although it won't make best use of the available bitrate, make sure your minimum I, P, and B quantizizers are all set to 1. And the max are all 31.

Please take screenies of your Xvid settings!

[Seijuro]

Yes as stated in my original post I read through the guide. And tried the recommended settings. But it doesn't work out with the quantizers, neither with '1' or '2' setting.

And as I said the oddest thing is that the first episode encode worked the second time, after I changed some settings, then I tried to encode another episode from the same DVD with the exact same settings, and it was undersized again...

Setting overflow strength etc. back to '5' did not help either, as I just found out in what must have been my fourth encode.

Of which settings pages would screenshots be needed exactly? Since my settings have produced good results before I really don't know what is wrong. It drives me crazy.

My BPP rating in GK is 0.220. Is that perhaps so high that it will compress too well? But the other episode worked fine with exactly same resolution etc...but only in the second encode. This is confusing.

[CWR03]

I was (and still am) using Gordian Knot 0.35 and XviD 1.12
Therein lies your problem: Xvid is no longer working with Gordian Knot. You can either go with an older build or switch to the VfW version of x264 (or switch to another encoding app altogether).