That Ratio / Resolution thingy...

[punistation]

I'm trying to rip & convert to AVI using Flask 6, but... well, here's my 1st attempt:



I went for the 4:3 ratio, but then I noticed this about the original DVD:



If the original DVD video is 720x480, how can it still have an aspect ratio of 4:3? I mean, it's just not 4:3.

Even written in the ripped DVD's IFO file:

**************
* Video Info *
**************

Compression: MPEG-2
TV system: NTSC
Aspect ratio: 4:3
TV system: not specified
Display mode: 720x480
Resolution: no
Letterboxed: Camera
Mode:



Know what I mean?

I'm just trying to choose the right resolution for the final AVI. I'm not making a VCD, so I'm not bound by the warped 352x240 rule. I just want a nice AVI which has the Video smaller than the original (maybe half?), but at it's original aspect ratio.

Of course, being a Widescreen DVD, that just throws a wackahooey into the whole thing. I'm used to doing 320x240 or 512x384 AVI's, but those DVD's weren't Widescreen. I'm alone in the jungle without a calculator here...

Any help for this pitiful newbie will be appreciated.

Kisses XXOOXX
Jen

<font size=-1>[ This Message was edited by: punistation on 2001-09-18 20:59:51 ]</font>

[Hollywood004738]

Video prob in non-anomorphic.

if you use Flask just go to the output pad and resize the image to the size you want then crop it so there are no black bars

When you say you want the video smaller, do you mean file size or frame size???

[nidoran]

the DVDs have resolution and aspect ratio completely independent on eachother. becouse the DVD has a 4:3 aspect ratio and 720X480 screen, the pixels arent square, so you need to resize it to another pixel configuration; or download a player (for example the Playa) which can play at a aspect ratio of your choice. 16:9 DVDs also have a 720X480 resolution.

hope i have given you enough information now.

NidoranZ
( PS: you can download the playa at http://www.divx.com )

[vitualis]

That's right. Most PC users have gotten used to the idea that pixels are naturally square (i.e., they are as wide as they are tall). However, this doesn't necessarily have to be the case.

The video on a DVD is in a resolution of 720x480, but it has a display aspect ratio of 4:3.

Often, it is easier to think about this where there is a bigger difference. For example, on a PAL SVCD, the resolution is 480x576 (480wide, 576tall). However, the display aspect ratio is still 4:3 (i.e., it completely fills up the display of a TV). This means that on the PAL SVCD, effectively eact "pixel" is actually much wider than it is tall. Or, more correctly, each pixel holds much more "horizontal" image data than it does "vertically".

Regards.

[punistation]

...this hurts my head.

After a good cry, I'm going to win billions in the lottery, wipe out this whole Pal/NTSC/SECAM rot, and introduce my own video resolution. It'll be called FISHYJOY, and all will rejoice.

Kisses XXOOXX
Jen

[nidoran]

dont mind, just use AVIs jen