resizing in xvid codec -- how?

[graysky]

I'm using virtualdubmod to go from MPEG-2 files to xvid. The source files are 480x480 and I need to resize them them 512x384. I can do this if I encode to divx (option in the codec to do so).... how can I do it when encoding to xvid using virtualdubmod?

[reboot]

Hint, look in the Video, Filters section.

[graysky]

Killer... I found it. But... the guides recommend not using the full processing mode when going from mpeg-4 to xvid.

[reboot]

First I wouldn't use XviD, I would use Divx, MPEG4 at max bitrate of 6000.
Why are you using vdubmod to resize? Let your encoder do the work and save a step, or am I missing something here?

[graysky]

First I wouldn't use XviD, I would use Divx, MPEG4 at max bitrate of 6000.

What does that mean? xvid is opensource and from what I've read, produces a better quality picture at a given bitrate

Why are you using vdubmod to resize? Let your encoder do the work and save a step, or am I missing something here?

I'm using the vdm filter because xvid does not have a resize option like divx does. How is it adding a step? Either the external filter does it, or the internal codec does it.

[reboot]

I guess what I'm trying to figure out is, why resize in vdub?
If your finished product is simply an avi, then I suppose the way you're doing it is fine. If the finished product is a dvd or svcd, then why add an unneccesary step?
It's probably my fault for assuming you were going to encode and burn eventually. If not, my apologies

[Suntan]

A few comments. Made in order from best quality to easiest to do:

1: Don't resize, encode the movie at 480x480 and resize at playback. Assuming you want to playback on your computer, use zoomplayer as your player and change the size/aspect ratio with that.

2: Use avisynth to frameserve the mpeg2 video to Vdubmod. That way you can stay in the same coloerspace (use fast recompress) and use avisynth's resize filters. That way you can use any player but you have to learn how to use

3: Use Vdubmod's resize filters (full processing mode) that way you can use any player and don't have to learn avisynth, but the quality will be (very slightly) less. Honestly though, unless you are obsessed enough to want to learn avisynth (and for that matter zoomplayer, VMR9, ffDshow, Lanczos resize, etc., etc., etc....) you really won't notice any difference by using full processing mode.

-Suntan

[graysky]

I guess what I'm trying to figure out is, why resize in vdub?
If your finished product is simply an avi, then I suppose the way you're doing it is fine. If the finished product is a dvd or svcd, then why add an unneccesary step?
It's probably my fault for assuming you were going to encode and burn eventually. If not, my apologies

Yea, products will be xvid encoded avi files.

[graysky]

Thanks for the info, Suntan