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30th December 2005, 13:10 | #83 | Link | |
I'm Shpongled
Join Date: Nov 2001
Location: Lithuania
Posts: 303
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Quote:
http://forum.doom9.org/showthread.ph...&highlight=crf probably post #20 most explaining |
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16th January 2006, 19:06 | #84 | Link |
dentist-experimenter
Join Date: Apr 2005
Location: Israel
Posts: 254
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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?
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20 years and ubuntu has just restored my faith in humanity ...lol |
17th January 2006, 09:37 | #85 | Link |
aka XaS
Join Date: Jun 2005
Location: France
Posts: 1,122
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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
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Q9300 OC @ 3.2ghz / Asus P5E3 / 4GB PC10600 / Geforce 8600 GTS |
26th February 2006, 20:21 | #87 | Link |
retired developer
Join Date: Oct 2002
Location: Canada
Posts: 8,978
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DeathTheSheep is unavailable until March 10 due to circumstances beyond his control. You're gunna have to wait
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Detritus Software |
23rd March 2006, 20:59 | #88 | Link |
<The VFW Sheep of Death>
Join Date: Dec 2004
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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!
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Recommended all-in-one stop for x264/GCC needs on Windows: Komisar x264 builds! |
23rd March 2006, 21:11 | #89 | Link |
retired developer
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Location: Canada
Posts: 8,978
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Seems you do productive things in your "forced freetime"
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Detritus Software |
23rd March 2006, 21:30 | #90 | Link | |
x264 developer
Join Date: Sep 2004
Posts: 2,392
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Quote:
Higher scenecut => more keyframes. Bitrate variability = 0 => constant bitrate. |
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23rd March 2006, 22:01 | #91 | Link |
<The VFW Sheep of Death>
Join Date: Dec 2004
Location: Deathly pasture of VFW
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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?
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Recommended all-in-one stop for x264/GCC needs on Windows: Komisar x264 builds! |
23rd March 2006, 22:06 | #92 | Link | |
retired developer
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Quote:
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Detritus Software |
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28th March 2006, 23:13 | #94 | Link |
<The VFW Sheep of Death>
Join Date: Dec 2004
Location: Deathly pasture of VFW
Posts: 1,149
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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!
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Recommended all-in-one stop for x264/GCC needs on Windows: Komisar x264 builds! |
28th March 2006, 23:18 | #95 | Link |
Registered User
Join Date: Mar 2005
Posts: 457
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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 |
11th April 2006, 08:49 | #100 | Link | |
Testeur de codecs
Join Date: May 2003
Location: France
Posts: 2,484
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Quote:
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 ... ???
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Le Sagittaire ... ;-) 1- Ateme AVC or x264 2- VP7 or RV10 only for anime 3- XviD, DivX or WMV9 |
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