Auto GK 1..95 Sizing Question

[ron spencer]

This is the first time I have notice this...I used AutoGK on my daughter's Bambi DVD...results were superb BTW....question is, the DVD is obviously 720x480, but after running AutoGK (with mp3 audio of 256) the output resolution is 720x540....why would the resoulition be upsized? can you constrain it to never change from 720x480? I would not care if it undersized.

Just a curiosity....

[unskinnyboy]

That is interesting, but :logfile:

[ron spencer]

yah I thought about that......but me being really tired and not thinking deleted it....still is interesting though....720x480 to 720x540 ntsc

[manono]

Hi-

still is interesting though....720x480 to 720x540 ntsc

I don't get it. What's so interesting about it? If your chosen width is 720, and it's a fullscreen 1.33:1 movie, then 540 height is what you get. The only interesting thing about it I see is that you say it's 540, and not 544. I thought that AutoGK followed the Mod16 rules. You sure it's 540 height?

[ron spencer]

only thing I meant by interesting was why change the resolution? I choose auto for size....if you can make 720x480 just do it and undersize....going to 540 (or 544) makes no sense

[manono]

Yes, but 720x480 will give you a bad Aspect Ratio. If you don't want it upsized, then set the Horizontal Resolution to 640 in the Advanced Settings, and with luck (depending on cropping), you'll get 640x480.

DVDs aren't 1:1, as AVIs usually are. They are either 4:3 (as in your case) or 16:9, and they get resized by the player so that they display with the proper Aspect Ratio. 720x480 is not the correct Aspect Ratio. Maybe Doom9's article on Aspect Ratios (http://www.doom9.org/aspectratios.htm) will explain it better.

[len0x]

Well, AutoGK only considers width when setting maximum resolution, but not height. Its just a design choice: either take maximum width and increased height or take maximum height and not reach maximum width even if it needs to do so to avoid undersize...