XviD presets thread

[Sharktooth]

ill remmove the teegedek presets from megui auto-update BUT i will host them on a website so you (thread readers) can get and import them at any time.
the reson is some ppl edits the presets to enable VAQ and sometimes it results in a very bad quality encode coz VAQ and some CQMs just cant work together.

[Sharktooth]

here we go: http://www.webalice.it/f.corriga/megui/teegedeck_xvid_presets.zip
or: http://mirror05.x264.nl/Sharktooth/MeGUI/profiles/teegedeck_xvid_presets.zip

[rack04]

So you're saying a new user isn't going to have any xvid presets unless they read this thread?

[Sharktooth]

no. i didnt say that.
there are indeed xvid profiles in megui but not those in this thread unless you download and import them manually.

[rack04]

Sorry for my confusion. Thanks.

Not that it's really important but there is a typo in the latest xvid presets.

2 oass Fast

[Sharktooth]

argh.... thanx fixed.

[ve1itas]

Hi,

If the result of a comp. test at 1000kbps is 45%, would encoding at a higher target bitrate, e.g. 1200kbps, with the >45% preset be a good idea? Would the output file at 1200kbps target bitrate have higher quality than that of 1000kbps'? I am guessing that the answer would be yes. If so, would the increased quality worth the extra disk usage?

I've tried something similar to the above. The quality of the result files were the same as far as I could tell. Is this common or is it just me?

The reason I am asking these questions is that I am trying to find the bitrate that would give the biggest "bang for the buck" for a particular preset. In other words, if I am happy with the quality of the >45% preset, how do I choose the appropriate bitrate?

[henryho_hk]

Just for your information. If you are using my batch script, it has 2 figures: (1) preset chosen & (2) comp test result. If the comp test result is 45~57, >45% preset is chosen. Since the comp test result has a linear relationship with the bitrate, if the comp test result is 49 or above, you can try the >58% preset when you give 1.2 times bitrate (58/1.2 = 48.33333).

Edit: The same applies to Jonny's Enc.

[ve1itas]

Just for your information. If you are using my batch script, it has 2 figures: (1) preset chosen & (2) comp test result. If the comp test result is 45~57, >45% preset is chosen. Since the comp test result has a linear relationship with the bitrate, if the comp test result is 49 or above, you can try the >58% preset when you give 1.2 times bitrate (58/1.2 = 48.33333).

Edit: The same applies to Jonny's Enc.

Ah! Thanks! I haven't thought about the linear relationship. Now the calculation of the minimum bitrate for a preset is really easy.

Still, is there an optimal bitrate for a preset? Or is it subjective?

[Barough]

Hi

Im wondering in what presets the 'bitrate spikes control' is activated in. All or just in some specific.



B

[henryho_hk]

Still, is there an optimal bitrate for a preset? Or is it subjective?

I spent 6 months thinking of the proper way to answer this question. ;)

Since the definition of "optimal" is subjective, the optimal bitrate for a preset is also subjective. :cool:

[henryho_hk]

Im wondering in what presets the 'bitrate spikes control' is activated in.

None of them. If you need standalone player compatibility, you may use the XviD MTK build which has some related profiles in its VFW interface. After selecting a profile, see which parameters you can still adjust according to the presets.

[Barough]

None of them. If you need standalone player compatibility, you may use the XviD MTK build which has some related profiles in its VFW interface. After selecting a profile, see which parameters you can still adjust according to the presets.

Thnx 4 the reply :)

[SilaSurfer]

Hi Teegedeck. First of all thank you very much for your Xvid presets, I admire and respect your time you've put in creating them, and with Henryho_hk great batch file it is something that put a big smile on my face. Visual quality that came out is very good on backups of my DVD collection, but I have some issues with some of my encodes if you could please take a look here

http://forum.doom9.org/showthread.php?t=119500&page=12

I've posted my problems in that thread, so I can't post them on other threads because of the rules. There is also a sample of the encoded video there. I think you have way more knowledge then me when it comes to Xvid encoding. Thanks

[SilaSurfer]

Hey Teegedeck I was wondering something for two presets which I use all the time (again thanks man):

# XviD '>58% comp. check' (fast): MSP=6, VHQ=1, VHQ for b-frames, Qpel, SixOfNine, curve-compr. H15, L5, quantizer-restrictions min. 3, max. 5 (4 for I-frames)
# XviD '>58% comp. check' (HQ): MSP=6, VHQ=4, VHQ for b-frames, Qpel, SixOfNine, curve-compr. H10, L3, quantizer-restrictions min. 3, max. 5 (4 for I-frames), Overflow Control Strength=0

Overflow Control Strength is set to 0 for only HQ preset of above mentioned? I'm manually entering these settings in xvid when encoding. Thanks in advance

[orion44]

In the first pass, which constant quantizer should we set?
In the second pass, should we switch to the weight setting?

In the first post it is written:
"A zone with constant quantizer as specified in the preset-settings."

I've only seen constant quantizer specified in the anime preset.

Can anyone help? Where is constant quantizer specified for the first pass?

[SilaSurfer]

In the first pass, which constant quantizer should we set?
In the second pass, should we switch to the weight setting?

Fixed Quantizer is "3" for all presets accept for "Anime" where it is "2".
For First pass fixed quantizer is set in Zones settings.
For second pass you have to set it to Weight=1

But why don't you try out henryho_hk great batch file which is fully automated.
http://forum.doom9.org/showthread.php?t=119500

Henryho_hk could you please tell me why in settings excel file "xvid_presets_25h" for Tghq-58 Overflow control strength is set to "default which is 5" but on this page Teegedeck wrote that for this preset Overflow control strength should be set to "0".

XviD '>58% comp. check' (HQ): MSP=6, VHQ=4, VHQ for b-frames, Qpel, SixOfNine, curve-compr. H10, L3, quantizer-restrictions min. 3, max. 5 (4 for I-frames), Overflow Control Strength=0


I'm a little bit confused.

[orion44]

fixed quantizer is "3" for all presets accept for "anime" where it is "2".
For first pass fixed quantizer is set in zones settings.
For second pass you have to set it to weight=1


thank you.

[henryho_hk]

um... it should be a typo. ^_^

[SilaSurfer]

um... it should be a typo. ^_^

Thanks for the response, just to make it clear. You mean on this thread or in the excel file? I'm manually entering settings in Xvid and using VirtualDub to encode my videos so, I would not want to enter wrong setting.

[henryho_hk]

A typo in my CSV file. Sorry for the mistake.

[SilaSurfer]

A typo in my CSV file. Sorry for the mistake.

No problem. :) :thanks:

[Kraziee]

is there any way to get faster encoding?
i have the latest xvid 1.3.x build, but i only get 120fps, and on my other computer i get 180fps,
is there any mod to get power from the gpu?

[medmunds]

for editing only: 1-pass only: ME6, VHQ=1, no b-frames, chroma ME, EQM EHR, constant quantizer = 2


Which Quantization Matrix is this referring to, V3EHR? Is there a way to load these into MediaCoder? Does this really even matter anymore?

[henryho_hk]

You may want to consider x264 with something like "--cq 8 --tune fastdecode --keyint 5 --bframes 0".

[orion44]

Is Turbo enabled or disabled in the second pass?