Resizing AVI to fit DVD

[hockeytown_rox]

Hi everyone, I'm familiar with all the tools to do this but not so familiar with the Avisynth scripting. Any advice or help with my script is appreciated.

I have a AVI that is 1.3 GB (over 3 hours of footage). Clearly this won't fit onto one NTSC DVD but I know the frames that I want to trim to break this up into two DVDs. Here is the data from Gspot:

codec; divx 5.02
resolution: 544x416
fps: 23.976
DAR: 1.3
PAR: 1

My question is...I want this to fit onto NTSC DVD and I believe the aspect ratio is close to 4:3 already. I have a widescreen TV so I don't want to stretch the AVI all the way to 720x480 (although I know I need this for DVD compliance). Stretching it more, in my mind would take away from the image quality.

My question is this...how can I tell my script that I want a DVD compliant file size, but add the proper borders so that I'm keeping my original resolution in-tact but simply putting borders to fill the rest of the screen...all the while trimming the AVI file up to a particular frame? Ive seen bicubic resizing and the lanczos but I'm not sure in which scenario to use either or really how. Also do I need a separate editing application or does avisynth trim files natively?

From there I can then figure out the length and do the rest in the other apps. I'm just a little bit 'scripting' challenged. Plus the avisynth sites are down right now so that limits my brushing up on the commands and what they mean.

Thanks in advance.

[kschang]

I'd say you don't need AVISYNTH for this. Just use VDub to cut your AVI into 2, then use DIVX2DVD or AVI2DVD to convert into DVD image.

[manono]

Hi-

With the ITU box checked, I get:

LanczosResize(704,480)
AddBorders(8,0,8,0)

I use FitCD to find the crop/resize/addborders and to get a basic script, and so should you. Then encode for 4:3.

how can I tell my script that I want a DVD compliant file size, but add the proper borders so that I'm keeping my original resolution in-tact but simply putting borders to fill the rest of the screen.

FitCD. And you don't keep the original resolution intact. Your AVI is 1:1 but your DVD will be 4:3. You have to adjust the resolution. Until you understand what's going on (and maybe even long after) use FitCD for the job. Here's Fulcilives' guide to FitCD:

https://forum.videohelp.com/viewtopic.php?p=1487285#1487285

all the while trimming the AVI file up to a particular frame?

Use the Trim Command (or cut the AVI in VDubMod before doing the encoding):

http://www.avisynth.org.ru/docs/english/corefilters/trim.htm

Plus the avisynth sites are down right now so that limits my brushing up on the commands and what they mean.

There's a pretty good mirror here:

http://www.avisynth.org.ru/docs/english/

[Alex_ander]

If you want letterboxing of 4:3 image inside 16:9 screen, here are the numbers for NTSC.
Resize your 4:3 source to 544x480, add (88+88) vertical borders and encode as 16:9.
P.S. slightly corrected

[hockeytown_rox]

do i need to use 3:2 pulldown on HCEnc?

[manono]

If you're encoding for 23.976fps, then you'll need to apply pulldown some time, either during the encoding, or afterwards, maybe using DGPulldown.

[guns1inger]

The pulldown in HCEnc is currently flawed. If you encode with HCEnc then DGPulldown is the preferred method of applying pulldown to your file.

[FulciLives]

Here is a thread that sorta became my mini-guide for encoding XviD/DivX MPEG-4 files to DVD using a variety of freeware software: CLICK HERE

- John "FulciLives" Coleman