Proper aspect when converting svcd to dvd

[vifa84]

I am trying to convert an svcd to a dvd with the proper aspect using mainconcept 3.4.2. The movie is letterboxed and I opened it up in virtualdubmod and hit resize/cropping. To get the black portion down to the movie it took 130 in the y values. Would this mean the video height would be 480 - 260 = 220? I have read some guides but am still a little unclear for a svcd. What would my width be? Do I need ot framserve with avisynth or virtualdubmod? It just shows green when i try to frameserve an mpg with virtualdubmod and gives an error with avisynth. avi seems to do ok.

[lordsmurf]

Your values are not subtractive, no.
You need to work out a simple algebra equation.

For example, 352x480 would not equal 342x460.
To keep to proper aspect, it would be 338x460 or 339x460.

[vifa84]

[quote="lordsmurf"]Your values are not subtractive, no.
You need to work out a simple algebra equation.

Ok, but I thought that 480 would be the height and if the black borders came down 130 pixels on the top and the bottom, what would be left is the true physical height? 480-260=220
640 x 220 = 2.9 (2.9 sure doesn't sound right)
480 x 1.78 / 2.9 = 294
720 x 294 with 93 pixels black on the top and bottom

[junkmalle]

Leave the black borders and encode as 720x480 or 352x480. That will maintain the proper aspect ratio.

[vifa84]

Ok, so your saying with svcd(letterbox) to just encode with the borders included and it sould keep the same aspect? I guess I should use 4:3 dar since I've read svcd doesn't support 16:9?
vifa84

[junkmalle]

If you want to make a widescreen anamorphic DVD crop 60 lines off the top and bottom, resize what's left to 720x480, and convert to 16:9 DAR MPEG2. Careful though, if the video is interlaced you have to use an interlace aware resizing filter. Even then the results won't be great.