XviD presets thread

[Dams]

Sh4nn0w : You're welcome

[weaver4]

I am not really trying to squeeze a movie into a specific size. I just want a good recording. Do I need to do the compressibility or can I just select the profile and say go. What profile should I use? I am using MeGui?

[Teegedeck]

Originally Posted by weaver4

I am not really trying to squeeze a movie into a specific size. I just want a good recording. Do I need to do the compressibility or can I just select the profile and say go. What profile should I use? I am using MeGui?

Encode at constant quantizer=3 and use the 90% HQ preset if size doesn't matter. Beware that the result might come out almost as big as the DVD with most movies...

[spanky123]

Thanks for this Teegedec. Had nfi what the comp test stuff meant in the profile names until now.

Will try these soon - using MeGUI

BTW. There's nothing wrong with using Gordian Knot to make the avs and do the comp check is there ?

[wayneo]

What if the compression check ends up reporting a percentage at 30% or lower? I'm converting a tv show that was recorded in 720p and converting it to around around about 380MB file and the percentage I get back is 16.85%.

[henryho_hk]

There is no preset for CT<30%. Actually, Teegedeck has stated that AVC (e.g. H.264) should be considered for CT<45% materials. Hence, you should consider to:

1) apply stronger denoisers and (hopefully) double the compressibility
2) resize to lower resolutions
3) increase the target size, and/or,
4) try other codecs

[Teegedeck]

@spanky123: Sorry I've missed your post. Nothing wrong with using GKnot for creating the avs; but the comp-check that GKnot performs is totally different in nature from what Enc does; just use Enc for that.

[spanky123]

Thanks

But I haven't been using the XviD in Megui, coz I get these errors. I know I'm missing some necessary files:

When I select 30%, I get:Error opening input file extra\eqm_v3ulr_rev3.xcm
When I select 45% I get: Error opening input file extra\eqm_v3lr.xcm
When I select 68% I get: Error opening input file extra\Didees SixOfNine.cqm

Where do I get these files ? And what do I do with them ?
Are they not supposed to download automatically when MeGUi is updated ?
Also, what are these files (.cqm and .xqm) for ? I think I heard somewhere that they've got to do with the Quantizer Matrices or something.

I remember before all the download servers and all that changed with Megui, everything was fine and was automatically downloaded. Since I uninstalled Megui completely and reinstalled the new one and updated everything I have not been able to encode with XviD.

The XviD profiles seem to download fine. They are in the /profiles folder.

If someone could answer all/most my questions and help me fix this problem that'd be good, cos I'm getting over Gordian Knot and was very impressed with Megui's XviD encoding and the XviD profiles. Thanks T

Thanks

[Brother John]

Originally Posted by Teegedeck

but the comp-check that GKnot performs is totally different in nature from what Enc does

Do you just mean different settings or a whole different methodolgy?

Shouldn't matter anyway, because if you setup GK's compcheck like explained in the first post, percentages are almost the same. At least that was the case for the 2-3 sources where I did checks with both programs.

[spanky123]

Can anyone help me please ?
http://forum.doom9.org/showpost.php?...8&postcount=28

[kurt]

http://mewiki.project357.com/wiki/Me...doesn.27t_work

[spanky123]

Originally Posted by kurt

http://mewiki.project357.com/wiki/Me...doesn.27t_work

Thanks bud

[Yoshiyuki Blade]

Hey. I've noticed that the non-HVS SixofNine cqm should be used for the comp check. Does that also mean that the non-HVS is used in the presets as well?

[henryho_hk]

Yeah, non-HVS 6of9 should be used in the presets.

[Teegedeck]

Originally Posted by Brother John

Do you just mean different settings or a whole different methodolgy?

Shouldn't matter anyway, because if you setup GK's compcheck like explained in the first post, percentages are almost the same. At least that was the case for the 2-3 sources where I did checks with both programs.

Sorry for my being busy with other things. AFAIR the comp-check Enc performs is more complex and accurate than GKnots. Happy to hear it's exact enough.

[Brother John]

It's quite easy to miss a detail or two from the compact preset descriptions in the first post. So I made a couple of text files with tree views of the presets' settings (see attachment). They might be useful if you configure your Xvid manually.

Teegedeck, if you have the time it'd be great if you could have a look at the files, if there are any mistakes.

[HeadBangeR77]

@ Brother John
Thanks a lot, I do almost everything manually, so it might be useful for me.

@ Teegedeck
I've been planing to revive the discussion about presets for quite a long time, but I always had sth else to do If I find more time, and I already know what I would like to speak about, I will write a few suggestions, based on my own experience.

Just a few (Brother John: Hast du Ahnung, wie Stichwörter auf Englisch heißen?) ... sort of key problems:

1) Curve Compression - I find it very useful in case of high quality (80% comp. check and above) encodes too, especially in dark, low-middle motion scenes. I've found some threads on CC, but some questions still remain unanswered (e.g. dependencies between high- and low bitrates CC).

2) 1st pass at quantizer 3 : sometimes, I'll repeat, sometimes I get better visual results (SSIM and the ultimate metric - my own eyes ) after having done the 1st pass at Q2. This happens mostly then, when I'm near a threshold of one preset to another, and decide to use the lower one (1st and 2nd pass bitrates don't differ very much).

3) Some alternative matrices that have been mentioned in the original (source) thread should be IMHO at least listed as alternatives, because not everyone uses your presets as they are (e.g. I ), and not everyone is into CQMs. Heini's MR (modified Sharktooth's V3 HR) could be a good replacement for V3 HR, for instance.

4) Very, very slight denoising (I used to be an opponent of this not a long time ago), like RemoveGrain(mode=1) or fft3dgpu(sigma=0.5,plane=4), could be recommended for most sources.

Just my noob ideas

Regards,
HDBR77

PS. I must have lost my head! Thank you for all your efforts & time put into the presets!

[Teegedeck]

Originally Posted by Brother John

Teegedeck, if you have the time it'd be great if you could have a look at the files, if there are any mistakes.

Hey, thanks for those detailed settings; I could only find minor errors: for the 45% HQ preset the max. quantizer is 5, except for i-frames where it is 4. As with the other presets' first passes, chroma motion should also be deactivated for the 30% fast preset's first pass. I think whether chroma optimizer is activated during first pass or not doesn't really matter.

@HeadBangeR77: Curve compression is a mixed blessing IMHO when it comes to compensating for dark scenes. I'm hoping for a real cure by Kopernikus' HVS tunings for XviD. Yes, first pass quant. should be as close to 2nd. pass average quant. as possible. Only for sake of simplification/practical reasons it is always '3' in the presets. As for matrices, I think everyone who knows what these beasts are should be able to find them him/herself; everone who doesn't should not be lead to meddle with these things... As for denoising, I would say 'no'. I think the presets should aim at reproducing a source as accurately as possible; whether that source should be denoised is up to every individual's taste. (Again and again I try very mild denoising but, personally, I never like the results.)

[Brother John]

Originally Posted by HeadBangeR77

Hast du Ahnung, wie Stichwörter auf Englisch heißen?

Stichwort = keyword, at least in a dictionary sense. In your post it's more along the lines of ideas, issues,... But don't worry about it. Teegedeck speaks German as well.

Originally Posted by Teegedeck

I could only find minor errors

Corrected and archive updated.

[Sharro]

Originally Posted by Sharktooth

HR may have standalone compatibility issues.
To fix them just replace all "15"s with "16"s in the inter-matrix.

As any of you ever seen any post about this ?

Couldn't it be a problem for your presets ?

EDIT: Just tried a 2 pass encode with didee's 6of9 to test in my standalones together with Heini's (with inter-matrix 15's replaced by 16's), results:

Philips DVP720SA/02
===Heini's Intermatrix Min 16 -> perfect play
===Didee's SixOfNive hvs -> artifacts on video (blocks)

Philips DVP5960/12
===Heini's Intermatrix Min 16 -> perfect play
===Didee's SixOfNive hvs -> perfect play

Video was 704x288 pixels Xvid 2BF, QP, PB, Chroma Optimizer, Trellis with 1593Kbps set for the second pass

So for the time being I'll have to stick with Heini's IM Min 16. I'll also try it on a Yamada 6700 plus and revert.

END EDIT

I have to agree with HeadBanger, the Heini cqm is definetly a replacement for HR but for Standalone reasons I've modified it as per Sharktooth's recommendations, I did at least 3 movies with the 3 different cqm's (Hvs-Best, HRV3, Heini's) and Heini's always one even if with a 13.5 to 16% difference in the first pass size to Hvs-Best.

Just my 5 cents!

All the best,

Sharro