upscaling from PAL 720x576

[EuropeanMan]

Lanczcos4Resize(1280,720) should work in DVD-RB, shouldn't it?

I want to make a 720p image...

What is the correct way to handle this in ScriptEditor...please.
Also,

Cropping(4,0,-2,0) is there as well...
i will also be using a denoiser & sharpeningfilter as well...
Any recommendations for the denoiser & sharpeninfiilter?

~bitrate is 6-7Mb...on the dvd9 vobs

[burfadel]

I'd try a different resize and see the output results first. Have you tried more taps? like:
LanczcosResize(1280,720,taps=6). Lanczos4resize (x,y) is the same as Lanczosresize(x,y,taps=4). Avisynth v2.5.8 (its pre-release, but works flawlessly for me) introduces Blackmanresize, which is a better version of Lanczcos, and uses the same parameters (so you can even use taps=8 etc). Supposed to provide slightly better quality. Also try Spline64resize, that seems to work quite well!

The best thing to do is make a short 30 second clip, and then see which one produces the best quality for what you want. This way if you stick with the lanczos filter, you can increase the taps until increasing them makes no difference (more taps=slower).

[EuropeanMan]

thanks...will try again...with blackmanresize & spline64resize...

i had never heard of taps before.

-----
although i did try the lanczo4resize(1280,720) by itself in DVD-RB...output was stretched and cut off on right side...and rez remained the same at 720/576... :(

[burfadel]

That makes sense, they're not the same aspect ratio! If you cropped the 720x576, took out the black bars, then coverted it you may be in luck :) but if its a fullscreen 720x576 picture you can't convert to 1280x720, you'll have to choose 900x720 or something...

[EuropeanMan]

& or 1280 x 1024? right...

meaning this is in script editor:

crop( 4, 72, -2, -72)
Blackmanresize(1280,720)
AddBorders(0,152,0,152)

[jdobbs]

If you're using AVISYNTH 2.5.6 (the default), I don't think BlackmanResize() is supported. You'd have to use LanczosResize() or Lanczos4Resize().

I've never tried any of the non-DVD compliant resolutions -- so its unpredictable what might happen when you do this. If you're using CCE I don't think it will even accept it (not sure) -- HC probably will.

[RickA]

EuropeanMan, not sure if this article will help you on writing your scripts for resizing or not. You may want to scroll down to the script writing info since I do not think you are doing the actual conversion part. I used it to resize and convert some PAL to NTSC vids not long ago. At least I found it helpfull then. ;-)

http://www.eggshellskull.com/pal2ntsc/

Cheers,
Rick