Making ~4GB ogms [Archive]

pwrstick

9th March 2005, 19:18

Hello,

I want to compress a DVD down to a ~4.2Gb OGM. I plan on using the ac3 file as is with surround sound and everything, ans XVid as the video codec.

My question is, in Gordian Knot, what numbers to use for W-Zoom, H-Zoom and Load.

Right now I have the resolution slider set to 0.232 Bits/Pixel*Frame but W-Zoom is red with 138% and H-Zoom is red with 113%. However this seems to provide an Aspect Error of 0%.

Also, load is 81.8%, and if I'm understanding this right that's overkill for Xvid.

So the main question is: What's more important to not get red? The W/H-Zoom text boxes or the Load text box? The slider never goes anywhere where it isn't red somewhere.

Thanks,
-Phil

killingspree

10th March 2005, 09:36

hi and welcome to the forum,

most likely 4.2 GB is overkill for an xvid movie, BUT if you want to go through with it, do not set h and w zoom to more than 100% - otherwise you would be interpolating the video which will just use more bitrate but not yield any better quality.

settings you can change to use up more of the bitrate: use a sharp resizer, do not use any denoising, leave the resolution as close as possible but not above 100%, perhaps even use a sharpening filter...

still it might be quite likely that you get undersized files...

hth
steVe

pwrstick

10th March 2005, 12:15

Thanks man. What is denoising? I'll go look that up.

Also, what exactly is an undersized file?

To give more information I'm backing up BattleStar Galactica which is just over 3 hours long. I figure it's 2 movies in one, hence the large file size.

And when you say don't put the resolution over 100% do you mean the number to the right of "Load"?

killingspree

10th March 2005, 12:50

Originally posted by pwrstick
Thanks man. What is denoising? I'll go look that up.

a kind of filtering that removes unregularities from the movie, aids in compression

Also, what exactly is an undersized file?

if the final file size of the encode you made is smaller than the size set in the encoding parameters

And when you say don't put the resolution over 100% do you mean the number to the right of "Load"?

no i mean the h and w zoom values...