DeathTheSheep United: x264 Guide and VfW Builds - Page 5

foxyshadis · 25th December 2005, 20:51

It's called "Pyramid" in MeGUI, but the option is still there in the VFW B-frame section (in MBs&Frames tab). It only activates if you have more than one B-frame.

LiFe · 30th December 2005, 12:15

A question that google hasn't been able to find on doom9:

What's the difference between Constant Quantizer (qp) mode and Quality (crf) mode?

Thanks.

slavickas · 30th December 2005, 13:10

Quote:

Originally Posted by LiFe

A question that google hasn't been able to find on doom9:

What's the difference between Constant Quantizer (qp) mode and Quality (crf) mode?

Thanks.

why google when forum search tool finds it perfectly
http://forum.doom9.org/showthread.ph...&highlight=crf
probably post #20 most explaining

[)370|\|470!2 · 16th January 2006, 19:06

How many passes should be used to get the possible "best-out-of" x264.
And btw, does bitrate setting in 1st pass affect following passes?

DarkZell666 · 17th January 2006, 09:37

actually 2pass is pretty good already, but 3pass has been proven to give visible better quality in some cases (the examples that comes to my mind is anime @ low-bitrate, e.g. < 400kbps, with very sudden bitrate changes).

Ask Sirber

You could consider using --crf instead, all depends on what you are trying to do

carlo_0000 · 26th February 2006, 04:35

possible to update the topic with the last version
there is a lot of change

Sirber · 26th February 2006, 20:21

DeathTheSheep is unavailable until March 10 due to circumstances beyond his control. You're gunna have to wait

DeathTheSheep · 23rd March 2006, 20:59

I'm back, and with a massive update to the guide! It's much better than ever--now with detailed pictures, descriptions, instructions, and suggestions, the all new, fully revamped DeathTheSheep x264 VFW Guide is like nothing you've ever seen before!

Sirber · 23rd March 2006, 21:11

Seems you do productive things in your "forced freetime"

akupenguin · 23rd March 2006, 21:30

Quote:

Originally Posted by DeathTheSheep

http://gabe.5000megs.com/DeathTheSheepAVCguide.pdf

You got scenecut threshold and bitrate variability backwards.
Higher scenecut => more keyframes.
Bitrate variability = 0 => constant bitrate.

DeathTheSheep · 23rd March 2006, 22:01

Tweaked.

Thanks for catching that before it could do any damage!

that darn qcomp...

akupenguin: What do you think about the rest of the guide?

Sirber · 23rd March 2006, 22:06

Quote:

No more GUI clutter, no more CLI mess!

... use RealAnime!

3ngel · 28th March 2006, 22:27

@DeathTheSheep
Where is gone the section dedicated to "Maximum quality regardless cpu time"?
And when it'll be back?

DeathTheSheep · 28th March 2006, 23:13

3ngel:
Hi! My guide now includes information about the added quality and speed penalty of different options, so it allows you to choose for yourself whether or not to activate certain options based on the extra time they take to encode.

For instance, disabling fast P-skip, as is stated in the guide, results in a very small overall quality increase of the encode, but it results in a longer encoding process. Therefore, I didn't recommend it for fast encodes unless blocking on flat textures is experienced. However, if you want the little bit of extra quality regardless of the encoding loss, feel free to turn it off.

It also explains, for example, that more reference frames tend to increase quality, but the speed penalty clearly outweighs their quality gains after 8 are used. However, based on the information that more are better, despite longer encoding time, feel free to use the maximum (16).

I hope I have been helpful to you, and if you are still having issues with this matter, I will consider revising the guide.

Thank you for your interest in DeathTheSheep's x264 VFW Guide, and have a nice day!

3ngel · 28th March 2006, 23:18

Oh, i see... so in other words you've changed the organization of the guide. I found very comfortable in the first version of the guide to skip the first two parts (in which i was not interested) and concentrate only on the third part (maximum quality). I found it very simple and clear.
Now i have to read the entire guide trying to districate myself in all the parameters... I think that if you reabilitate the three parts it would be more clear and simple, but if you're not, well i'll try to read the entire guide

Dyolfknip · 30th March 2006, 16:39

Great guide! Thanx Sheep.

thuongshoo · 11th April 2006, 05:02

Thanks you ! I'm using VirtualDub and K-lite codec pack 271 . I don't see where "fast skip" is . Did "New version vfw" remove this option ?
thanks !

ChronoCross · 11th April 2006, 06:13

klite codec pack is stupid. probably doesn't have a newer version. I recommend staying awway from all codec packs.

Audionut · 11th April 2006, 08:24

AFAIK, vfw never had fast p-skip.

Sagittaire · 11th April 2006, 08:49

Quote:

A good bet for most people interested in high quality video would be the range of 20 (highest
quality) to 30 (lower quality), depending on individual preference and the amount of disk space
reserved for the encoded file.

Q30 for full HD resolution will be high quality encoding
Q20 for CQIF resolution will be low quality encoding

Resolution is really important here because DCT artefact size are always the same but not DCT artefact relative size : it's hard to see high blocking level at 1080p but not soft blocking level at CQIF/QIF resolution.

Little example:
sample 1 q20 512*288 done 1057 Kbps
sample 2 q24 720*400 done 1021 Kbps
sample 3 q30 1280*720 done 1023 Kbps

Find the best sample for yours eyes ... ???

16th January 2006, 19:06	#84 \| Link
[)370\|\\|470!2 dentist-experimenter $[)370\|\\|470!2's Avatar$ Join Date: Apr 2005 Location: Israel Posts: 254	How many passes should be used to get the possible "best-out-of" x264. And btw, does bitrate setting in 1st pass affect following passes? __________________ 20 years and ubuntu has just restored my faith in humanity ...lol
$[)370\|\\|470!2 is offline$

17th January 2006, 09:37	#85 \| Link
DarkZell666 aka XaS Join Date: Jun 2005 Location: France Posts: 1,122	actually 2pass is pretty good already, but 3pass has been proven to give visible better quality in some cases (the examples that comes to my mind is anime @ low-bitrate, e.g. < 400kbps, with very sudden bitrate changes). Ask Sirber You could consider using --crf instead, all depends on what you are trying to do __________________ Q9300 OC @ 3.2ghz / Asus P5E3 / 4GB PC10600 / Geforce 8600 GTS

26th February 2006, 20:21	#87 \| Link
Sirber retired developer Join Date: Oct 2002 Location: Canada Posts: 8,978	DeathTheSheep is unavailable until March 10 due to circumstances beyond his control. You're gunna have to wait __________________ Detritus Software

23rd March 2006, 20:59	#88 \| Link
DeathTheSheep <The VFW Sheep of Death> Join Date: Dec 2004 Location: Deathly pasture of VFW Posts: 1,149	I'm back, and with a massive update to the guide! It's much better than ever--now with detailed pictures, descriptions, instructions, and suggestions, the all new, fully revamped DeathTheSheep x264 VFW Guide is like nothing you've ever seen before! __________________ Recommended all-in-one stop for x264/GCC needs on Windows: Komisar x264 builds!

23rd March 2006, 21:11	#89 \| Link
Sirber retired developer Join Date: Oct 2002 Location: Canada Posts: 8,978	Seems you do productive things in your "forced freetime" __________________ Detritus Software

25th December 2005, 20:51	#81 \| Link
foxyshadis Angel of Night Join Date: Nov 2004 Location: Tangled in the silks Posts: 9,559	It's called "Pyramid" in MeGUI, but the option is still there in the VFW B-frame section (in MBs&Frames tab). It only activates if you have more than one B-frame.

30th December 2005, 12:15	#82 \| Link
LiFe PC Dom: Computer Support Join Date: Nov 2003 Posts: 165	A question that google hasn't been able to find on doom9: What's the difference between Constant Quantizer (qp) mode and Quality (crf) mode? Thanks.

26th February 2006, 04:35	#86 \| Link
carlo_0000 Registered User Join Date: Sep 2005 Posts: 104	possible to update the topic with the last version there is a lot of change

23rd March 2006, 22:01	#91 \| Link
DeathTheSheep <The VFW Sheep of Death> Join Date: Dec 2004 Location: Deathly pasture of VFW Posts: 1,149	Tweaked. Thanks for catching that before it could do any damage! that darn qcomp... akupenguin: What do you think about the rest of the guide? __________________ Recommended all-in-one stop for x264/GCC needs on Windows: Komisar x264 builds!

28th March 2006, 22:27	#93 \| Link
3ngel Registered User Join Date: Mar 2005 Posts: 457	@DeathTheSheep Where is gone the section dedicated to "Maximum quality regardless cpu time"? And when it'll be back?

28th March 2006, 23:13	#94 \| Link
DeathTheSheep <The VFW Sheep of Death> Join Date: Dec 2004 Location: Deathly pasture of VFW Posts: 1,149	Maximum Quality 3ngel: Hi! My guide now includes information about the added quality and speed penalty of different options, so it allows you to choose for yourself whether or not to activate certain options based on the extra time they take to encode. For instance, disabling fast P-skip, as is stated in the guide, results in a very small overall quality increase of the encode, but it results in a longer encoding process. Therefore, I didn't recommend it for fast encodes unless blocking on flat textures is experienced. However, if you want the little bit of extra quality regardless of the encoding loss, feel free to turn it off. It also explains, for example, that more reference frames tend to increase quality, but the speed penalty clearly outweighs their quality gains after 8 are used. However, based on the information that more are better, despite longer encoding time, feel free to use the maximum (16). I hope I have been helpful to you, and if you are still having issues with this matter, I will consider revising the guide. Thank you for your interest in DeathTheSheep's x264 VFW Guide, and have a nice day! __________________ Recommended all-in-one stop for x264/GCC needs on Windows: Komisar x264 builds!

28th March 2006, 23:18	#95 \| Link
3ngel Registered User Join Date: Mar 2005 Posts: 457	Oh, i see... so in other words you've changed the organization of the guide. I found very comfortable in the first version of the guide to skip the first two parts (in which i was not interested) and concentrate only on the third part (maximum quality). I found it very simple and clear. Now i have to read the entire guide trying to districate myself in all the parameters... I think that if you reabilitate the three parts it would be more clear and simple, but if you're not, well i'll try to read the entire guide

30th March 2006, 16:39	#96 \| Link
Dyolfknip Registered User Join Date: Dec 2005 Posts: 8	Great guide! Thanx Sheep.

11th April 2006, 05:02	#97 \| Link
thuongshoo Registered User Join Date: Mar 2006 Posts: 197	Thanks you ! I'm using VirtualDub and K-lite codec pack 271 . I don't see where "fast skip" is . Did "New version vfw" remove this option ? thanks !

11th April 2006, 06:13	#98 \| Link
ChronoCross Does it really matter? Join Date: Jun 2004 Location: Chicago, IL Posts: 1,542	klite codec pack is stupid. probably doesn't have a newer version. I recommend staying awway from all codec packs.

11th April 2006, 08:24	#99 \| Link
Audionut Registered User Join Date: Nov 2003 Posts: 1,281	AFAIK, vfw never had fast p-skip.