Filters sharpeners and antialiasing

[jagabo]

The edges are blurred because they're antialiased. That's what antialiasing is -- blurring edges to reduce aliasing artifacts:



In addition, the video is from a tape source which has blurred it a bit more and added slight oversharpening halos. You can try a horizontal sharpening (Sharpen(0.3,0.0)) but that will make the halos worse. FastLineDarken() might help.

[charlesn73z]

I was testing FastLineDarken and image was totally green, what could be wrong?

[sanlyn]

You aren't making a DVD rip. Look up the term here: https://www.videohelp.com/glossary?R#Rip . DVD is MPEG2, not mkv/AVC. "DVD" can't be anything else. At DVD standard, a bitrate of 2100 would be 4 hours or more of video. Apparently your priority is file size, not quality. But that's your choice. NTSC DVD is 29.972 fps (25fps for PAL), not 23.976. If what you want to do is burn mkv's to a DVD-R disc, that's another story.

[sanlyn]

I was testing FastLineDarken and image was totally green, what could be wrong?

You are using the newer MaskTools v2 or later. FastLineDarken uses earlier MaskTools v1.5.8. Get the older version here: http://avisynth.org/mediawiki/MaskTools . You can have both versions of MaskTools in your plugins folder because each has different function names and the names of the two dll's are different. If you still have a problem with the two versions, there are other ways around it.

[charlesn73z]

You aren't making a DVD rip. Look up the term here: https://www.videohelp.com/glossary?R#Rip . DVD is MPEG2, not mkv/AVC. "DVD" can't be anything else. At DVD standard, a bitrate of 2100 would be 4 hours or more of video. Apparently your priority is file size, not quality. But that's your choice. NTSC DVD is 29.972 fps (25fps for PAL), not 23.976. If what you want to do is burn mkv's to a DVD-R disc, that's another story.

I expressed myself badly, I'm actually encodando DVD/MPEG2 to MKV/Mpeg4/AVC, but I have to take the size into account as a file for me encodadado can not have nearly the same font size actually always looking for a compromise between size and quality.

[sanlyn]

Everyone looks for a compromise, but there is a point at which one has to take some level of priority over the other. You can't put bitrate at too low a level and then complain about quality. You aren't compromising if you expect to have it both ways.

[charlesn73z]

I was testing FastLineDarken and image was totally green, what could be wrong?

You are using the newer MaskTools v2 or later. FastLineDarken uses earlier MaskTools v1.5.8. Get the older version here: http://avisynth.org/mediawiki/MaskTools . You can have both versions of MaskTools in your plugins folder because each has different function names and the names of the two dll's are different. If you still have a problem with the two versions, there are other ways around it.

Tenho MaskTools-v1.5.8 e masktools-v2.0a48.

[charlesn73z]

Everyone looks for a compromise, but there is a point at which one has to take some level of priority over the other. You can't put bitrate at too low a level and then complain about quality. You aren't compromising if you expect to have it both ways.

I understood what you said, but the issue is not this because the other encode bitrate is lower than mine and does not have the problem at the edges, the jagabo indicated the issue to be addressed.

[charlesn73z]

The edges are blurred because they're antialiased. That's what antialiasing is -- blurring edges to reduce aliasing artifacts:


[Attachment 19722 - Click to enlarge]

In addition, the video is from a tape source which has blurred it a bit more and added slight oversharpening halos. You can try a horizontal sharpening (Sharpen(0.3,0.0)) but that will make the halos worse. FastLineDarken() might help.

Tested and FastLineDarken did him absolutely nothing about the problem I mentioned.

[sanlyn]

Lines and edges in the original are not as clean as those in your version.

[charlesn73z]

Lines and edges in the original are not as clean as those in your version.

The other video I put is not the original but a dbz encode and I base encode it to make a decent, since he is the best version of dbz that currently exists.

[theewizard]

do you have the dvd's
go back to the beginning and start over
what you have at this point cannot be improved upon

your visual acuity must be much better than mine
because if i were watching this as video i might not even see the the antialaising

at dvd quality antialasing is usually a non issue as its not noticable
it comes into play when reducing resolution

at hi-def i cannot even seen any antialaising

[sanlyn]

Watch the videos:

https://mega.co.nz/#F!ssIEFTjZ!e9xkGyMCzo9XKT6FBY3p4A

password: dfg

When you reach this point, compare both:

Look the legs of Raditz, the outline or edges of the image are blurred in my version. And in another video that does not happen. That's what I want to solve.

You can repair very littleof that. In some cases the lines are broken, at other times they ripple and shimmer. That could be from bad tape playback, low bitrate, or any number of things. Possibly it could exist on other sources. If the "other video"you mention doesn't have that problem, why aren't you working with that other video?

You didn't mention the shimmer and flicker in the costume of the figure in the foreground. Those shadow colors are bouncing all over the place. Your version looks slightly better in that respect.

The original was probably telecined or used pulldown, and heaven knows what else. Mishandling inverse telecine can have similar effects, but the problem here is that these effects don't occur in every scene.

[charlesn73z]

Watch the videos:

https://mega.co.nz/#F!ssIEFTjZ!e9xkGyMCzo9XKT6FBY3p4A

password: dfg

When you reach this point, compare both:

Look the legs of Raditz, the outline or edges of the image are blurred in my version. And in another video that does not happen. That's what I want to solve.

You can repair very little of that. In some cases the lines are broken, at other times they ripple and shimmer. That could be from bad tape playback, low bitrate, or any number of things. Possibly it could exist on other sources. If the "other video"you mention doesn't have that problem, why aren't you working with that other video?

You didn't mention the shimmer and flicker in the costume of the figure in the foreground. Those shadow colors are bouncing all over the place. Your version looks slightly better in that respect.

The original was probably telecined or used pulldown, and heaven knows what else. Mishandling inverse telecine can have similar effects, but the problem here is that these effects don't occur in every scene.

Because I want to make my own encodes.


A fonte used for both videos is the same.


The original video does not have this problem that I mentioned.


The author of another video must have gone through what is happening to me, it solved the problem, do not know how.

[jagabo]

the original video does not have this problem that I mentioned.

Then you should post the original video.

[charlesn73z]

the original video does not have this problem that I mentioned.

Then you should post the original video.

Here it is:


http://uploaded.net/file/gon30dtx

password:dfg

[sanlyn]

The link says the vido is no longer available. And of cousre we don't need the entire movie, just the part we've been discussing here.

[jagabo]

He fixed the link.

[charlesn73z]

Used:

[sanlyn]

He fixed the link.

Yep. Thanks for the tip.

Would be nice if I didn't have to act fast and close the popup screen that ESET is telling me wants to download some malware.

Interesting avs script. It resizes before denosing. Then sharpens 3 times before using antialias.

[charlesn73z]

I'm new at it, do not have as much knowledge as you, then show me the right way ...

[sanlyn]

Oops...no, sorry, the resize didn't change the aspect ratio. The resized frame is almost 1:3333:1 (720x544 works out to 1.3235:1). But it's not a good idea. The encoder resizing yet again to 720x480 creates some distortion. I would just leave the borders as they are and leave the 720x480 originalsize. Up to you.

Denoise first, then resize. There's no sense resizing noise and then trying to clean it.
Antialias first, then sharpen. There's no sense sharpening aliased edges and then trying to smooth them.

[charlesn73z]

super = MSuper()backward_vec3 = MAnalyse(super, isb=true, delta=3, overlap=4)
backward_vec2 = MAnalyse(super, isb=true, delta=2, overlap=4)
backward_vec1 = MAnalyse(super, isb=true, delta=1, overlap=4)
forward_vec1 = MAnalyse(super, isb=false, delta=1, overlap=4)
forward_vec2 = MAnalyse(super, isb=false, delta=2, overlap=4)
forward_vec3 = MAnalyse(super, isb=false, delta=3, overlap=4)
MDegrain3(super, backward_vec1, forward_vec1, backward_vec2, forward_vec2, backward_vec3, forward_vec3, thSAD=300, thSADC=400)
Lanczos4Resize(720,480) # Lanczos4 (Sharp)
antialiasing()
LSFmod(defaults="slow")
MSharpen(threshold=8, strength=10,mask=false, highq=true)
unsharpmask(strength=8,radius=3,threshold=2)
GradFun3()

Something else for me to stay tuned?

[sanlyn]

Better. But why resize to the same size? Perhaps you forgot the Crop statement -- but if you crop 16 pixels off the width and then stretch the image, it will alter the aspect ratio on display. I'd suggest not cropping at all. A 4:3 video is going to play on 16x9 TV with black pillars anyway. A full screen media player on a PC will have black borders as well. Either way you look at it, a 16:9 display will show 4:3 video with black side borders. The original video is arranged so that a 4:3 image will fit inside the encoded frame without losing any data, and will display properly at 4:3 on playback. On a 4:3 CRT, overscan will hide the borders.

Of you must resize, avoid Lanczos artifacts. Use Spline36Resize.

[charlesn73z]

I resized to 720 X 480 because when I did the crop, the resolution was 704 X 480.


Still not sure about this issue crop and resize, I better leave at 720 X 480 or 640 X 480?


What would the correct crop and resize to the original video?

[sanlyn]

704x480 is valid for DVD and AVCHD. Many 4:3 commercial issues are formatted that way.

[charlesn73z]

First image: 704x480
Second image: 720X480
Third image: Original


Jagabo, analyzing the original video you got a solution for that problem I told you about?

[manono]

Two is no good because you're changing the aspect ratio slightly, as sanlyn already told you. Either one or three is fine. Me, if making a DVD I remove the original black and then after the filtering is all done, put it back again. If for something else remove the black and either set a PAR when encoding or resize to some 1.33:1 ratio, one such as 640x480.

[charlesn73z]

I will use the third option equal to the DVD, as sanlyn said, will stay with the black edges anyway, as it will be displayed on screen 16X9.

[sanlyn]

I don't see the point in resizing. How many 4:3 videos have you seen on your 16x9 computer or TV that don't have side borders when they display? If you want to crop the borders, leave the basic image unchanged at 704X480; that frame size is valid for DVD/AVCHD, and the unchanged image will display properly at 4:3 without resizing. The source video already has what appears to be edge noise due to playback or other problems; resizing makes those problems look worse.