Avisynth Script Editing

[sundance]

Until now I did some DVD2SVCD projects where the source DAR always was anamorphic 1:1.85 or 1:2.35. Now I stumbled over a DVD where the video (wide-screen) was encoded with 2 horizontal black bars (120 pixel each) resulting in the standard 720x576 format.
My question is: Do I have to edit the Avisynth script (cropping the bars, ...) or should I just run DVD2SVCD with a DAR of 4:3?

(And, am I right if I assume that all the Avisynth stuff (temporal smooth, resizing, ...) is always done before the encoding starts? So there would be no way just encoding my 720x336 video from above and add some bars after that...)

-sundance-

[markrb]

Wow you really want to do things the hard way. You are thinking way too much and this can become dangerous. ;)

On your encode problem. That is called a "letterbox" movie and is pretty commom in older DVD's. Since the black bars take almost nothing in bits to encode just encode it as 4:3. You do not need to edit anything. Just select the aspect ratio of 4:3. If you crop you risk cropping part of the movie. Plus it makes no difference since you will just be adding them right back.

The resize is done right before the video is served to CCE or TMPG so yes anything in the avisynth script is done before the encode.

There is no way to just add bars after the video is encoded. The bars have to be part of the encode. Unless your DVD player correctly reads 16:9 SVCD's and adds the bars like it does for a DVD, but most DVD players cannot do this.

The black bars take up very few bits anyway.

For most information on the way to use and write the avs file you are best looking in the avisynth forum. This question is in the right place, maybe I am still debating if this belongs in basics or not.


Mark