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View Full Version : What is a good sharpener?


gioppatta
13th June 2012, 13:01
Hello, I write for speak about sharpener filters as limitedsharpenfaster, lsfmod in a context of xvid codec, low resolution (for exaample 640x272).
what's a good function for the sharpener?

Didée
13th June 2012, 13:22
If the source allows, then LSFmod can be a good sharpener, or SeeSaw can be a good sharpener, or Sharpen() can be a good sharpener, or MedianSharp can be a good sharpener, or WarSharp can be a good sharpener, or or or ...

However, depending on the source, LSFmod can be a bad sharpener, or SeeSaw can be a bad sharpener, or Sharpen() can be a bad sharpener, or MedianSharp can be a bad sharpener, or WarpSharp can be a bad sharpener, or or or ...

Groucho2004
13th June 2012, 14:10
If you are still targeting the abysmal quality in these (http://forum.doom9.org/showthread.php?p=1576036#post1576036) screen shots then any sharpener will do - like blur(-1.0).

As a nice side effect, the sharpener will enhance the visibility of the macro blocks you seem to like.

Bloax
13th June 2012, 16:07
By the way - those screenshots (or whatever you'd call them, I'm kinda used to game terms) seem to use a custom quantization matrix.

Namely one that quantizes the shit out of everything that's not highly detailed.

mandarinka
13th June 2012, 18:37
Also keep in mind that when it comes to sharpening, less is usually more. People tend to overfilter a lot. Actually, in general most sources are fine already and would be best treated with *no* sharpening at all...

gioppatta
13th June 2012, 19:17
A good function for lsfmod with a lot of sharpening but without noise?

Guest
13th June 2012, 20:34
Run a denoiser before your sharpener.

Bloax
13th June 2012, 21:13
You might also want to consider posting an image of the source, if you want a bit more clear answers. (Heh.)

TheSkiller
13th June 2012, 22:33
A static picture does not help. We need a well picked short video sample to be able to give more comprehensive advice than "use xy for clean sources and xy for noisy sources".

And yes, those screenshots look ugly, not in my dreams I would call this a decent encode, it's crap.

gioppatta
14th June 2012, 09:14
last time I insert a screen my post was closed...The source is a 720p in h.264 and my target is an xvid encode in 700MB

gioppatta
14th June 2012, 09:16
I don't know a spacial temporal denoiser, only hqd3d.

Guest
14th June 2012, 12:28
last time I insert a screen my post was closed That's because you were discussing a torrent download. Since you are presumably smart enough not to do that again, why can't you post your source this time?

gioppatta
14th June 2012, 13:02
ok, but what kinds of upload method can i use?

Guest
14th June 2012, 13:18
mediafire.com is one option.

I remind you that our rules require that you legitimately own the source material. If it's a bluray movie, for example, we will want to know why your source is 720P.

gioppatta
14th June 2012, 13:37
ok, thankyou! if I don't upload the source but only the output filtered?

Guest
14th June 2012, 13:43
That would be pointless.

Where did you get the source material?

gioppatta
14th June 2012, 15:01
from a bluray full I encode it in a 720p, now from the 720p I would to encode in xvid

Guest
14th June 2012, 15:03
That's silly. You should start with your original. Post a sample from the original bluray.

gioppatta
15th June 2012, 11:59
I don't know how tu cut a .mkv with video in h264 anyway the output in xvid is really dirty (with lsmod())

Guest
15th June 2012, 13:09
Bluray disks have M2TS files, not MKV files. You can cut them with DGSplit. Why are you talking about MKV files?

gioppatta
16th June 2012, 11:53
beacause I can't see 1080p with my pc so i reduced the resolution to 720p. but the problem with filters is the same with DVD source

gioppatta
16th June 2012, 14:41
beacause I must resize it to watch on my pc (resolution too high). but the problem is the same with a DVD source (I don't know how to cut a vob), the videois dirty and grain