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Old 25th December 2005, 20:51   #81  |  Link
foxyshadis
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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.
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Old 30th December 2005, 12:15   #82  |  Link
LiFe
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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.
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Old 30th December 2005, 13:10   #83  |  Link
slavickas
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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
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Old 16th January 2006, 19:06   #84  |  Link
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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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Old 17th January 2006, 09:37   #85  |  Link
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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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Old 26th February 2006, 04:35   #86  |  Link
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possible to update the topic with the last version
there is a lot of change
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Old 26th February 2006, 20:21   #87  |  Link
Sirber
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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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Old 23rd March 2006, 20:59   #88  |  Link
DeathTheSheep
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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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Old 23rd March 2006, 21:11   #89  |  Link
Sirber
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Seems you do productive things in your "forced freetime"
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Old 23rd March 2006, 21:30   #90  |  Link
akupenguin
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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.
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Old 23rd March 2006, 22:01   #91  |  Link
DeathTheSheep
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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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Old 23rd March 2006, 22:06   #92  |  Link
Sirber
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Quote:
No more GUI clutter, no more CLI mess!
... use RealAnime!
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Old 28th March 2006, 22:27   #93  |  Link
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@DeathTheSheep
Where is gone the section dedicated to "Maximum quality regardless cpu time"?
And when it'll be back?
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Old 28th March 2006, 23:13   #94  |  Link
DeathTheSheep
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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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Old 28th March 2006, 23:18   #95  |  Link
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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
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Old 30th March 2006, 16:39   #96  |  Link
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Great guide! Thanx Sheep.
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Old 11th April 2006, 05:02   #97  |  Link
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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 !
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Old 11th April 2006, 06:13   #98  |  Link
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klite codec pack is stupid. probably doesn't have a newer version. I recommend staying awway from all codec packs.
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Old 11th April 2006, 08:24   #99  |  Link
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AFAIK, vfw never had fast p-skip.
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Old 11th April 2006, 08:49   #100  |  Link
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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 ... ???
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1- Ateme AVC or x264
2- VP7 or RV10 only for anime
3- XviD, DivX or WMV9
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