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 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

Quote:

Originally Posted by gioppatta

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?

13th June 2012, 13:01	#1 \| Link
gioppatta Registered User Join Date: May 2012 Posts: 36	What is a good sharpener? 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? Last edited by Guest; 13th June 2012 at 13:04. Reason: Forum rule 12: don't ask what's best!

13th June 2012, 13:22	#2 \| Link
Didée Registered User Join Date: Apr 2002 Location: Germany Posts: 5,407	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 ... __________________ - We´re at the beginning of the end of mankind´s childhood - My little flickr gallery. (Yes indeed, I do have hobbies other than digital video!)

13th June 2012, 14:10	#3 \| Link
Groucho2004 Join Date: Mar 2006 Location: Barcelona Posts: 5,034	If you are still targeting the abysmal quality in these 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. Last edited by Groucho2004; 13th June 2012 at 14:13.

13th June 2012, 22:33	#9 \| Link
TheSkiller Registered User Join Date: Dec 2007 Location: Germany Posts: 632	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. Last edited by TheSkiller; 13th June 2012 at 22:35.

14th June 2012, 13:37	#15 \| Link
gioppatta Registered User Join Date: May 2012 Posts: 36	ok, thankyou! if I don't upload the source but only the output filtered? Last edited by gioppatta; 14th June 2012 at 13:40.

13th June 2012, 16:07	#4 \| Link
Bloax The speed of stupid Join Date: Sep 2011 Posts: 317	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.

13th June 2012, 18:37	#5 \| Link
mandarinka Registered User Join Date: Jan 2007 Posts: 729	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...

13th June 2012, 19:17	#6 \| Link
gioppatta Registered User Join Date: May 2012 Posts: 36	A good function for lsfmod with a lot of sharpening but without noise?

13th June 2012, 20:34	#7 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	Run a denoiser before your sharpener.

13th June 2012, 21:13	#8 \| Link
Bloax The speed of stupid Join Date: Sep 2011 Posts: 317	You might also want to consider posting an image of the source, if you want a bit more clear answers. (Heh.)

14th June 2012, 09:14	#10 \| Link
gioppatta Registered User Join Date: May 2012 Posts: 36	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

14th June 2012, 09:16	#11 \| Link
gioppatta Registered User Join Date: May 2012 Posts: 36	I don't know a spacial temporal denoiser, only hqd3d.

14th June 2012, 13:02	#13 \| Link
gioppatta Registered User Join Date: May 2012 Posts: 36	ok, but what kinds of upload method can i use?

14th June 2012, 13:18	#14 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	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.

14th June 2012, 13:43	#16 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	That would be pointless. Where did you get the source material?

14th June 2012, 15:01	#17 \| Link
gioppatta Registered User Join Date: May 2012 Posts: 36	from a bluray full I encode it in a 720p, now from the 720p I would to encode in xvid

14th June 2012, 15:03	#18 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	That's silly. You should start with your original. Post a sample from the original bluray.

15th June 2012, 11:59	#19 \| Link
gioppatta Registered User Join Date: May 2012 Posts: 36	I don't know how tu cut a .mkv with video in h264 anyway the output in xvid is really dirty (with lsmod())

15th June 2012, 13:09	#20 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	Bluray disks have M2TS files, not MKV files. You can cut them with DGSplit. Why are you talking about MKV files?

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