Calibration footage

Begbie wrote on 9/2/2003, 9:51 PM
I was wondering if anyone knew if something akin to the THX calibration video that is found on Star Wars DVDs is available to download and use to calibrate my TVs XGA/Ypp inputs (rank 80cm HDTV).

I have messed with the setttings a bit lately and havent been able to get it just right again.

I would prefer this was available as an mpg or avi so i can use my PC and xbox to display it to XGA and Ypp rather than via dvd and svideo.

If not is any other method anypone can think of? At least something with a groovy test pattern, as non of the V channels displaying a test pattern any more :(

Comments

Begbie wrote on 9/3/2003, 6:43 PM
Ok i have found a bunch of test pattern graphic in the pnm and png format. When i put them in the time line and attempt to create mpgs from them the little patterns get all squashed and become useless, since they really need to be precise.

I have tried making them progressive or interlaced, and have tried using CBR instead of VBR and turned of the resample switch in vegas. Is it possible to use these types of pic to create dvds, and keep the pics precisely as they are?

example of the same file in its original pnm format and after i converted in PSP.

6kb png http://www.ozquake.com/cb_1x1.png
1mb pnm http://www.ozquake.com/cb_1x1.pnm
farss wrote on 9/4/2003, 3:53 AM
I haven't downloaded the image to really play with it but what you need to do is avoid any remapping of the pixels at that resolution. Its seems to be 720x486 which from memory is NTSC frame size, just drop it in and don't use anything that's trying to fit it to the frame and it should encode to mpeg and onto DVD OK.

BTW though unless you can go from the DVD player to the TV in RGB you're not going to see anything other than grey on the screen.
jbeale1 wrote on 9/4/2003, 4:48 AM
I haven't figured out yet how to get Vegas to not remap pixels. NTSC DVDs use MPEG2 files with 720x480 pixel maps, but Vegas seems to want to import 720x528 images and then rescales them internally.
Begbie wrote on 9/4/2003, 5:00 AM
It most certainly doesnt work. there must be a tricky way of doing this?

I have Ypp - progressive DVD input or Ycc interlaced DVD input - it makes no diference, it doesnt work.

I would prefer to be using the progressive method, but this would mean re sampling i suppose?
Chienworks wrote on 9/4/2003, 6:37 AM
Jbeale1, create your image as 720x480 since this is the DVD frame size. Drop the image onto the timeline, open up Pan/Crop, and UNcheck Maintain aspect ratio. The image will now fill the frame without pixel remapping.

It may look munged in the preview display if you select Simulate Device Aspect Ratio. If you turn this off then you will see the actual pixels at a 1x1 ratio.
Begbie wrote on 9/4/2003, 8:14 AM
I checked, mine isnt checked. Still it does not work :(