dvd2svcd squashing pictures

[jchristl]

This is something that seems to have been bothering me as of late. I have dvd2svcd and Avi2Dvd. When I use dvd2svcd and pick Tmpgenc or Quenc (or whatever) it seems to squash the picture, even after authored to a VOB.

I have a 4:3 avi, loaded it in dvd2svcd and the authored output had bars on the sides, and the screen was squished. If I used a 16:9 avi and ran it through it would come out squished, too, but no bars on the sides.

If I ran that same 4:3 avi through Avi2Dvd, and picked the "same" encoder to do the job, the authored files come out okay.

I haven't been able to figure out "why" this difference is occuring. dvd2svcd seems to be a pretty smart application, and there are tons of people that use it. Why can't I get one bloody avi to convert properly?

[jchristl]

Okay I think I know why this is happening, but I still don't know "why" its happening. dvd2svcd is frameserving it wrong (i think).

Based on the recommendations of doom9.org I changed the Frameserve tab to BicubicResize. The default parameters are

• 0=Import(!RoBaConditional.avs)
  1=BicubicResize(^TargetWidth,^TargetHeight,^b_valu e,^c_value)
  2=AddBorders(^BorderLeft,^BorderTop,^BorderRight,^ BorderBottom)
  !RoBaConditional.avs=C:\Program Files\DVD2SVCD\Tylo\RoBaConditional.avs
  ^b_value=0.0
  ^c_value=0.6

When the script is created it looks like this

• LoadPlugin("C:\PROGRA~1\DVD2SVCD\AVISYN~1.5PL\Mpeg2dec\MPEG2D~1.DLL")
  AVISource("C:\work1\2X01_-~1.AVI",audio=false)
  ConvertToYUY2()
  AssumeFPS(29.970,True)
  Import("C:\Program Files\DVD2SVCD\Tylo\RoBaConditional.avs")
  BicubicResize(540,480,0.0,0.6)
  AddBorders(90,0,90,0)
  ConvertToYV12()

The BicubicResize and AddBorders are what's squashing my film. I believe the other resize options were picked too, with similar results. In the tab, it says Resize to DVD (720 x 480/576).

Avi2Dvd's Avisynth script shows (among other things):

• LanczosResize(720,480,0.0,0.6)
  AddBorders(0,0,0,0)

which is a good thing (isn't it?)

so I don't understand why this is happening...