Encoding gurus, I wish to learn! - Page 2

manono · 13th March 2012, 08:20

Quote:

Originally Posted by Biggiesized

I know this is old, but how did you acquire the Fox Home Theater CQMs?

They're built into HCEnc (and also found in Matrix collections that are floating around). Or:

Code:

Fox 1:

        08 08 09 11 13 13 14 17
	08 08 11 12 13 14 17 18
	09 11 13 13 14 17 17 19
	11 11 13 13 14 17 18 20
	11 13 13 14 16 17 20 24
	13 13 14 16 17 20 24 29
	13 13 14 17 19 23 28 34
	13 14 17 19 23 28 34 41

	08 08 08 09 09 09 09 10
	08 08 09 09 09 09 10 10
	08 09 09 09 09 10 10 10
	09 09 09 09 10 10 10 10
	09 09 09 10 10 10 10 11
	09 09 10 10 10 10 11 11
	09 10 10 10 10 11 11 11
	10 10 10 10 11 11 11 11

Fox 2 (Slightly different from the version HCEnc uses, but very comparable):

        08 08 09 11 13 13 14 17
	08 08 11 12 13 14 17 18
	09 11 13 13 14 17 17 19
	11 11 13 13 14 17 18 20
	11 13 13 14 16 17 20 24
	13 13 14 16 17 20 24 29
	13 13 14 17 19 23 28 34
	13 14 17 19 23 28 34 41

	08 08 09 09 10 10 11 11
	08 09 09 10 10 11 11 12
	09 09 10 10 11 11 12 12
	09 10 10 11 11 12 13 13
	10 10 11 11 12 13 13 14
	10 11 11 12 13 13 14 15
	11 11 12 13 13 14 15 15
	11 12 12 13 14 15 15 16 

Fox 3:

        08 08 09 11 13 13 14 17
	08 08 11 12 13 14 17 18
	09 11 13 13 14 17 17 19
	11 11 13 13 14 17 18 20
	11 13 13 14 16 17 20 24
	13 13 14 16 17 20 24 29
	13 13 14 17 19 23 28 34
	13 14 17 19 23 28 34 41

	16 16 16 16 16 16 16 16
	16 16 16 16 16 16 16 16
	16 16 16 16 16 16 16 16
	16 16 16 16 16 16 16 16
	16 16 16 16 16 16 16 16
	16 16 16 16 16 16 16 16
	16 16 16 16 16 16 16 16
	16 16 16 16 16 16 16 16

Biggiesized · 13th March 2012, 11:02

I know they're part of HCEnc. I've viewed them there myself.

I mean, who originally sourced them? And how?

Guest · 13th March 2012, 13:03

It's easy to dump them from the stream with the right tool.

pandy · 13th March 2012, 13:57

However be inform that some decoders (AFAIR broadcom) don't like situation when DC is lower than 8 (sometimes even lower than 16 on non-intra).

kolak · 13th March 2012, 16:31

Restream can dump matrixes.

mp3dom · 13th March 2012, 19:36

If I'm not wrong, ReStream dump the first set of matrices in the file. If the mpeg2 switch matrices at GOP level (like some encoders do) you can't log them all. With DGIndex, enabling "Log quantizer matrices" you can dump all the matrices used by the mpeg2.

kolak · 13th March 2012, 21:33

Hmmm- now I'm not sure what I've used- maybe it was DGIndex, which does it "better" way. Don't remember

I think it was DGIndex

manono · 13th March 2012, 23:06

Quote:

Originally Posted by Biggiesized

I mean, who originally sourced them? And how?

Who? The one called Fox 1 (aka Fox Home Theater) first showed up in a collection of XviD matrices as far as I know. It was obviously sourced from a 20th Century Fox DVD. I don't know the person that first made it available. The how has been explained elsewhere in this thread. It was probably done using ReStream as I don't believe DGIndex had that ability then.

The ones called Fox 2 and Fox 3 were supplied by me for Rockas's add-on to DVD-Rebuilder. Fox 2 I got from a DVD. Fox 3 I created from pieces of two others. I believe it was Hank that gave all three of them the names used in his encoder. The idea was that each compressed the video more than the one before (output a smaller file size), for the same quant value.

Midzuki · 13th March 2012, 23:32

Quote:

Originally Posted by kolak

Hmmm- now I'm not sure what I've used- maybe it was DGIndex, which does it "better" way. Don't remember

I think it was DGIndex

Rockas Matrix Editor uses Quantdump.exe:

Code:

[C:\]
=>quantdump
QuantDump 1.1 by Donald A. Graft
Usage: quantdump inputfile [outputfile]
       where input file is an elementary or program stream
       and outputfile will be written with the quant dump information.

Guest · 13th March 2012, 23:33

Oh yeah, I forgot I made that.

Biggiesized · 14th March 2012, 05:32

Awesome! I can't wait to dig up some good looking DVDs in my collection and analyze them.

Just curious... but what are some of everyone's favorite looking DVDs (for comparison)?

Biggiesized · 14th March 2012, 10:45

Hmm... can you dump QMatrices from H.264 streams as well?

kolak · 14th March 2012, 11:24

Yes- there is a tool, but don't remember name

Something like AVpnic?

mp3dom · 14th March 2012, 12:29

AVInaptic. You need to put the raw stream in an MKV container. You'll see only matrices that differs from "Flat". So, basically, Flat matrix used -> no info about matrices. Something different -> values of 8x8/4x4 intra/inter matrices.

kolak · 14th March 2012, 13:13

Hehehe- I was close with name

Biggiesized · 26th November 2012, 23:50

I did some tests with AVInaptic and only the 4x4 intra luma matrix was dumped. Does this mean all of the other matrices are flat?

Are there any other tools for MPEG-4 AVC/H.264 steams?

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13th March 2012, 11:02	#22 \| Link
Biggiesized Registered User Join Date: Apr 2007 Location: Pittsburgh, PA Posts: 225	I know they're part of HCEnc. I've viewed them there myself. I mean, who originally sourced them? And how?

13th March 2012, 13:03	#23 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	It's easy to dump them from the stream with the right tool.

13th March 2012, 13:57	#24 \| Link
pandy Registered User Join Date: Mar 2006 Posts: 1,049	However be inform that some decoders (AFAIR broadcom) don't like situation when DC is lower than 8 (sometimes even lower than 16 on non-intra).

13th March 2012, 16:31	#25 \| Link
kolak Registered User Join Date: Nov 2004 Location: Poland Posts: 2,845	Restream can dump matrixes.

13th March 2012, 19:36	#26 \| Link
mp3dom Registered User Join Date: Jul 2003 Location: Italy Posts: 1,135	If I'm not wrong, ReStream dump the first set of matrices in the file. If the mpeg2 switch matrices at GOP level (like some encoders do) you can't log them all. With DGIndex, enabling "Log quantizer matrices" you can dump all the matrices used by the mpeg2.

13th March 2012, 21:33	#27 \| Link
kolak Registered User Join Date: Nov 2004 Location: Poland Posts: 2,845	Hmmm- now I'm not sure what I've used- maybe it was DGIndex, which does it "better" way. Don't remember I think it was DGIndex

13th March 2012, 23:33	#30 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	Oh yeah, I forgot I made that.

14th March 2012, 05:32	#31 \| Link
Biggiesized Registered User Join Date: Apr 2007 Location: Pittsburgh, PA Posts: 225	Awesome! I can't wait to dig up some good looking DVDs in my collection and analyze them. Just curious... but what are some of everyone's favorite looking DVDs (for comparison)?

14th March 2012, 10:45	#32 \| Link
Biggiesized Registered User Join Date: Apr 2007 Location: Pittsburgh, PA Posts: 225	Hmm... can you dump QMatrices from H.264 streams as well?

14th March 2012, 11:24	#33 \| Link
kolak Registered User Join Date: Nov 2004 Location: Poland Posts: 2,845	Yes- there is a tool, but don't remember name Something like AVpnic?

14th March 2012, 12:29	#34 \| Link
mp3dom Registered User Join Date: Jul 2003 Location: Italy Posts: 1,135	AVInaptic. You need to put the raw stream in an MKV container. You'll see only matrices that differs from "Flat". So, basically, Flat matrix used -> no info about matrices. Something different -> values of 8x8/4x4 intra/inter matrices.

14th March 2012, 13:13	#35 \| Link
kolak Registered User Join Date: Nov 2004 Location: Poland Posts: 2,845	Hehehe- I was close with name

26th November 2012, 23:50	#36 \| Link
Biggiesized Registered User Join Date: Apr 2007 Location: Pittsburgh, PA Posts: 225	I did some tests with AVInaptic and only the 4x4 intra luma matrix was dumped. Does this mean all of the other matrices are flat? Are there any other tools for MPEG-4 AVC/H.264 steams?