New Quantization Matrices - EQM V3 series (last update: 04/02/2005 - V3ULR) - Page 17

Sharro · 25th January 2007, 08:27

Quote:

Originally Posted by HeadBangeR77

OT:

...
2) I've tried Colormatrix and I'm not happy with its results, with all the respect to the creator. First, it oversaturates red and human faces, imo. Second, it is forcing tv-scale (not full colors' range) by default, what I don't like especially (washed-out colors, dimmed image). Just a few ideas

If I well understood the principle of Colormatrix and if used properly it shouldn't give you the above problems, it should just feed the encoder with the colormatrix he's expecting (601) against the (mainly) standard colormatrix of mpeg2 (BT709).

I've compared colors of the mpeg2source and avisource with converttorgb and definetly the encodes with colormatrix had better color matching.

Maybe it could be a mistake of my eyes.

All the best,

Sharro

Beave · 1st February 2007, 23:36

If the source is not bt709 you will get wrong colors with colormatrix of course.
I actually noticed the wrong colors myself a few years back and happiliy found colormatrix what got the solution to this problem. That was before autogk or megui were using them as standard.

Vindarath · 11th April 2008, 23:02

is there any 'all purpose cqm'? im encoding hitman with the high rate cqm at cq2, 704w400h. but im getting bitrates below 1600.

Ranguvar · 12th April 2008, 02:10

Quote:

Originally Posted by Vindarath

is there any 'all purpose cqm'? im encoding hitman with the high rate cqm at cq2, 704w400h. but im getting bitrates below 1600.

Try encoding a sample EQM V3LR, MPEG, and possibly EQM V3HR, and see which looks better to you.

Lenny_Nero · 13th August 2008, 17:38

Quote:

is there any 'all purpose cqm'?

I have been thinking about this question since it was posted, and because I do a large amount of DVB-TV to xvid encodes (5~10 a day) I have been looking for the best all-rounder to save me re-encoding things over and over.

Well just as there is no 'best' there is not really a cqm that will work right with everything, for everybody, because what I think looks good others will not.

But so far I have found that, again, this is for me (I like a sharper picture and always used mpeg over H.263) I have been very impressed with the "EQM - AutoGK sharp.xcm" cqm and so far (over 100 encodes) its working right every time and has yet to have a problem with any SAP (nothing below 16 in the inter-matrix).

But I would also do as Ranguvar says and at least try "EQM V3LR, MPEG, and possibly EQM V3HR" as well because they are top quality cqm's.

Ranguvar · 13th August 2008, 17:45

The all-purpose CQM is now Xivd with the VAQ patch, using H.263 (technically not a CQM) with Adaptive Quantization enabled

shae · 13th August 2008, 23:31

Quote:

Originally Posted by Ranguvar

The all-purpose CQM is now Xivd with the VAQ patch, using H.263 (technically not a CQM) with Adaptive Quantization enabled

Wouldn't that still result in a soft image?

Ranguvar · 14th August 2008, 05:41

In most situations, nope. Perhaps in extremes.

Lenny_Nero · 14th August 2008, 13:59

Quote:

Wouldn't that still result in a soft image?

Thats how I would have thought it, or are you saying that now with the VAQ patch you dont need to do anything with CQM/QM's ?

Sharktooth · 14th August 2008, 14:09

consider VAQ as a sort of "adaprive CQM" that even works on standalones.
If i have to choose between encoding with a CQM or encoding with VAQ, ill go for VAQ first. If and only if im not satisfied then i would use a CQM.

Video Master · 17th August 2008, 12:30

Quote:

Originally Posted by Sharktooth

consider VAQ as a sort of "adaprive CQM" that even works on standalones.
If i have to choose between encoding with a CQM or encoding with VAQ, ill go for VAQ first. If and only if im not satisfied then i would use a CQM.

I too prefer H.263 + AQ over CQMs , they work best for me.

Also i am using Xvid 1.1.2 [xvidcore.dll] Koepis Vanilla CVS Build , Nov 1 2006 specifically.

Sharktooth · 17th August 2008, 13:35

xvid 1.1.2 AQ is not VAQ... and it sux...

Video Master · 17th August 2008, 14:58

Quote:

Originally Posted by Sharktooth

xvid 1.1.2 AQ is not VAQ... and it sux...

Point noted

Tuik · 19th February 2010, 21:23

Hello,

What Custom Matrix should I use in SD content with a 2pass bitrate of 2250 kbps? The aim is the best sharpeness possible.

Thank you for the help.

Jawor · 30th July 2010, 17:54

EQM v3 HR preserves detail pretty well (and works OK with VAQ). Qpel can help a lot as well (if our target player supports it). It's the resizing from 1920x1080 to 720xXXX that will cause a significant loss of detail (of course we have no other choice if we want to play our encodes on “DivX Home Theater” certified players).

elguaxo · 30th July 2010, 22:43

Read the sticky

Here you have a thread with compressibility tests using different CQMs and Jawor made a useful comment on compatibility here.

The higher bitrate matrices keep more details, but they also need more bitrate.

edit: lol, the post with the question I was commenting to disappeared.

Jawor · 30th July 2010, 23:10

Quote:

Originally Posted by elguaxo

Here you have a thread with compressibility tests using different CQMs and Jawor made a useful comment on compatibility here.

About the min=16 requirement for the INTER part... If you change the 15s to 16s in “EQM v3 HR”, the quality difference won't be really noticeable (I tried this

). MediaTek-based players may require such a change. My Philips DVP3142/12 (Zoran Vaddis 966 chipset) plays every custom matrix I can throw at it. Very old players (e.g. based on the ESS Vibratto chipset) probably won't play any of the “MPEG-Custom” matrices.

Tuik · 21st September 2010, 15:37

Quote:

Originally Posted by Jawor

EQM v3 HR preserves detail pretty well (and works OK with VAQ). Qpel can help a lot as well (if our target player supports it). It's the resizing from 1920x1080 to 720xXXX that will cause a significant loss of detail (of course we have no other choice if we want to play our encodes on “DivX Home Theater” certified players).

It's ok to use a custom matrix and VAQ at the same time? And how do i use VAQ in xvid_encraw?

Sharktooth · 22nd September 2010, 01:13

not all quant matrices are VAQ friendly.
test them on a short clip and see if they're behaving correctly.

henryho_hk · 22nd September 2010, 14:17

Copy an updated xvidcore.dll to the same folder as xvid_encraw. Then you can use the lumi-masking option to turn on VAQ.

14th August 2008, 14:09	#330 \| Link
Sharktooth Mr. Sandman Join Date: Sep 2003 Location: Haddonfield, IL Posts: 11,768	consider VAQ as a sort of "adaprive CQM" that even works on standalones. If i have to choose between encoding with a CQM or encoding with VAQ, ill go for VAQ first. If and only if im not satisfied then i would use a CQM. __________________ MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!!

17th August 2008, 13:35	#332 \| Link
Sharktooth Mr. Sandman Join Date: Sep 2003 Location: Haddonfield, IL Posts: 11,768	xvid 1.1.2 AQ is not VAQ... and it sux... __________________ MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!!

30th July 2010, 17:54	#335 \| Link
Jawor Ex-ter-mi-nate! Join Date: Jan 2004 Location: www.videoaudio.pl Posts: 218	EQM v3 HR preserves detail pretty well (and works OK with VAQ). Qpel can help a lot as well (if our target player supports it). It's the resizing from 1920x1080 to 720xXXX that will cause a significant loss of detail (of course we have no other choice if we want to play our encodes on “DivX Home Theater” certified players). __________________ Please excuse if my English is crappy. Archive of my Xvid builds

30th July 2010, 22:43	#336 \| Link
elguaxo Registered User Join Date: Jun 2006 Posts: 260	Read the sticky Here you have a thread with compressibility tests using different CQMs and Jawor made a useful comment on compatibility here. The higher bitrate matrices keep more details, but they also need more bitrate. edit: lol, the post with the question I was commenting to disappeared. Last edited by elguaxo; 31st July 2010 at 11:44.

22nd September 2010, 01:13	#339 \| Link
Sharktooth Mr. Sandman Join Date: Sep 2003 Location: Haddonfield, IL Posts: 11,768	not all quant matrices are VAQ friendly. test them on a short clip and see if they're behaving correctly. __________________ MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!!

1st February 2007, 23:36	#322 \| Link
Beave Registered User Join Date: Nov 2001 Posts: 205	If the source is not bt709 you will get wrong colors with colormatrix of course. I actually noticed the wrong colors myself a few years back and happiliy found colormatrix what got the solution to this problem. That was before autogk or megui were using them as standard.

11th April 2008, 23:02	#323 \| Link
Vindarath Registered User Join Date: Apr 2008 Posts: 26	is there any 'all purpose cqm'? im encoding hitman with the high rate cqm at cq2, 704w400h. but im getting bitrates below 1600.

13th August 2008, 17:45	#326 \| Link
Ranguvar Registered User Join Date: Feb 2007 Location: ::1 Posts: 1,236	The all-purpose CQM is now Xivd with the VAQ patch, using H.263 (technically not a CQM) with Adaptive Quantization enabled

14th August 2008, 05:41	#328 \| Link
Ranguvar Registered User Join Date: Feb 2007 Location: ::1 Posts: 1,236	In most situations, nope. Perhaps in extremes.

19th February 2010, 21:23	#334 \| Link
Tuik Registered User Join Date: Apr 2009 Posts: 85	Hello, What Custom Matrix should I use in SD content with a 2pass bitrate of 2250 kbps? The aim is the best sharpeness possible. Thank you for the help.

22nd September 2010, 14:17	#340 \| Link
henryho_hk Registered User Join Date: Mar 2004 Posts: 889	Copy an updated xvidcore.dll to the same folder as xvid_encraw. Then you can use the lumi-masking option to turn on VAQ.