MPEG1 upscale?

[asarian]

Hello,

I'm trying to find a good filter to smoothen out an old MPEG1 VCD I want to upscale. Like a blurry jpeg, it has these typical low-res blotches on it.

I was wondering whether someone can recommend a good filter for that kind of stuff. Most of the filters I have usually are meant for material that is already HD(-ish).

Thanks.

[vid.user]

By up-scaling you will only loose, never gain, why would you want that?

[asarian]

Originally Posted by vid.user

By up-scaling you will only loose, never gain, why would you want that?

Properly upscaling SD material can often do wonders for how it looks. Anyway, the upscaling (Lanczos4Resize) is only the post-process step: it's about getting rid of low-res blotches.

EDIT: I found filters like Blockbuster, but that seems to be doing something else (also useful, btw).

[StainlessS]

Might want to try nnedi3_rpow2 for upscale, also I would prefer Spline36Resize or Spline64Resize.

    nnedi3_rpow2(int rfactor, int nsize, int nns, int qual, bool pscrn, string cshift, int fwidth,
                 int fheight, float ep0, float ep1, int threads, int opt, int fapprox)

No particular suggestion for the blotches, although temporal / spatio temporal can help if blotches vary frame to frame.
My favorite spacio/temp filter is FF3DFilter. (Favorite spacial only is VagueDenoise).
ExBlend() intended for (NTSC) 3/2 blend removal of eg SD converted for VCD via ReduceBy2.

EDIT: Other deblock filters I have on disk are FunkyDeblock, DeBlock_QED, and SmoothDeblock.
Only used SmoothDeblock which was very good for a particular clip (although slow I think).

[creaothceann]

Dither might help too.

[asarian]

Originally Posted by StainlessS

Might want to try nnedi3_rpow2 for upscale, also I would prefer Spline36Resize or Spline64Resize.

    nnedi3_rpow2(int rfactor, int nsize, int nns, int qual, bool pscrn, string cshift, int fwidth,
                 int fheight, float ep0, float ep1, int threads, int opt, int fapprox)

No particular suggestion for the blotches, although temporal / spatio temporal can help if blotches vary frame to frame.
My favorite spacio/temp filter is FF3DFilter. (Favorite spacial only is VagueDenoise).
ExBlend() intended for (NTSC) 3/2 blend removal of eg SD converted for VCD via ReduceBy2.

EDIT: Other deblock filters I have on disk are FunkyDeblock, DeBlock_QED, and SmoothDeblock.
Only used SmoothDeblock which was very good for a particular clip (although slow I think).

Thanks! I also found some good info on the process at:

How to upscale with Nnedi3?

I always thought Lanczos4Resize was the best, LOL.

Speaking of VCD, 352x288, that doesn't really look like true 4:3 to me (more like 4:3.2727). Should I just upscale to 1440x1080 (4:3) and call it the day?

[feisty2]

eedi3 is a smooth and high quality upscaler
nnedi3 is way too sharp for crappy clips

[feisty2]

use this script
http://pastebin.com/Zj4GMDxG

dither_convert_8_to_16 ()
ediresize16 (x,y,kernel_u="bicubic",noring=true,cplace="mpeg1") #x,y is your target resolution
ditherpost (mode=6)

the result is soft and artifacts free

[asarian]

Originally Posted by feisty2

use this script
http://pastebin.com/Zj4GMDxG

dither_convert_8_to_16 ()
ediresize16 (x,y,kernel_u="bicubic",noring=true,cplace="mpeg1") #x,y is your target resolution
ditherpost (mode=6)

the result is soft and artifacts free

Thank you kindly!

[asarian]

Btw, just to give you guys an idea of how very bad it really is:

https://www.dropbox.com/s/2u3gx0ffv8...rybad.jpg?dl=0

LOL.

EDIT: Hmm, direct images to dropbox apparently don't work here.

[asarian]

Originally Posted by feisty2

use this script
http://pastebin.com/Zj4GMDxG

dither_convert_8_to_16 ()
ediresize16 (x,y,kernel_u="bicubic",noring=true,cplace="mpeg1") #x,y is your target resolution
ditherpost (mode=6)

the result is soft and artifacts free

Odd. I'm getting the following error all the time:

"There is no function named dither_convert_8_to_16"

[feisty2]

Originally Posted by asarian

Odd. I'm getting the following error all the time:

"There is no function named dither_convert_8_to_16"

you need dither package

[asarian]

Originally Posted by feisty2

you need dither package

Doh.

Just my luck, though, Dither 1.26.1 download site seems gone now.

http://ldesoras.free.fr/src/avs/dither-1.26.1.zip

[StainlessS]

Originally Posted by asarian

EDIT: Hmm, direct images to dropbox apparently don't work here.

Try PhotoBucket.com next time, images appear direct on forum post. (EDIT: Immediately)

[asarian]

Originally Posted by feisty2

you need dither package

Nearly there, I think Now I get:

"No function named UnDefined()" in your script, at:

sclip = Default (sclip, UnDefined())

[feisty2]

Originally Posted by asarian

Nearly there, I think Now I get:

"No function named UnDefined()" in your script, at:

sclip = Default (sclip, UnDefined())

whats your avisynth version, the script requires avs 2.6 or avs+

[asarian]

Originally Posted by feisty2

whats your avisynth version, the script requires avs 2.6 or avs+

Oops, I'm still on 2.5.8. Is 2.6 downwards compatible? Don't want to ruin my entire setup.

[feisty2]

Originally Posted by asarian

Oops, I'm still on 2.5.8. Is 2.6 downwards compatible? Don't want to ruin my entire setup.

2.6 is completely compatible with 2.5.8 scripts and plugins, and there are some new filters can only be called on 2.6 platform

[asarian]

Originally Posted by feisty2

2.6 is completely compatible with 2.5.8 scripts and plugins, and there are some new filters can only be called on 2.6 platform

Okay. Thanks for all your help!

[feisty2]

Originally Posted by asarian

Okay. Thanks for all your help!

and you need eedi3mod here instead of eedi3
its much faster (at least 4x faster) and can be even faster if set mclip=true in ediresize16
https://www.doom9.org/showthread.php?p=1654880#476