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Higher CPU OC doesn't effect gordian knot/encoding

L

lxie123

Senior member
I'm using gordian knot to encode movies available @Doom9 |4 gig dvd ----> 700 mb divx 5 AVI|


It's set up EXACTLY according to their guide on the site, and i'm noticing absolutely no difference between my 2.6c @ 2.6 or
2.6c @ 3.3 or even my old p4 1.8 @ 2.4.

FPS just fluctuates arround 30~50 depending on the movie... and it still takes 2-3 hour per movie
( 2 passes)
anandtech review says i should be getting like 100 fps for divx 5 encoding.
p4 review

Am i missing something here?
Does cpu frequency effect this encoding at all?

any input will be much appreciated.
 
Well I have not ran te latest version of gknot but I ran 2.8 version with codec 5.05 on both by p4 1.6a@2.74ghz and 2.4b@3.24ghz and there was a noticeable difference in time to encode of same movie with same settings.....

Like i said I cannot attest for latest gknot or even latest divx codec version of 5.10...I have heard that 5.1 was considerably slower (but better) then older divx version of 5.02-5.05 so make sure you are not compaing to past codecs with the older rig.....I think some latest codec bug fixes have helped increase encoding times and maybe there was a bug with the codec that maxed fps out....

I would really be solving this problem at www.doom9.net and their forms as their is a subforum just for gknot...that and you chance of getting help here on that topic is a lot slimmer......


Two things I know from my years of testing gknot is that...

A) It loves raw processing speed so 600mhz increase should have most definitely decreased encoding time (increased fps)

B) It also increases with bandwidth and the fsb increase should have garnered more there as well...Not as much as raw speed as I found out but it was a nice 5% increase for me versus my default speeds...



I haven't ran gknot in about 4 months since I really have no use for divx encoding anymore...Now I have a dvd burner and I am more interested in converting my divx files to mpeg2 to burn on dvd-rs....
 
Thanks for the advice duvie.. I'm using the same version as i did on my 1.8a@ 2.4

Version 0.28.5

I heard they have .28.6 now, didnt even download that.. .. I just used the same installer from my old data drive that I downloaded when i had the 1.8 @ 2.4.

Also, the different version doesn't explain why there no diff in performance between 2.6C @ 2.6 and 2.6c@ 3.3

Using the same divx pro, had on my old comp too.
DivX Pro(tm) Software
=====================
Version: 5.0.5 Pro
README file updated on: 2003-04-24
 
Well I used 5.05 pro and I saw a difference so that is a bit strange.....

I am at a loss here...I don't think any I/O devices would effect you here so I can't see why it didn't raise the speed.....with the 3.3ghz you have a rough 1000+fsb and 700+mhz there should be anywhere from a 0-20% increase in speed....


Like I said I think doom9 ppl will shed some light on this more then I can....
 
Thanks i posted there.. only problem is that most those guys on that forum are not really performance " minded"
Most are encoding with p3 machines that take up to 10 hours per movie.
So when i say that it takes 2-3 hours while complaining about performance, they are like wtf?

But at 2.6c it's also 2-3 hours.. so i really don't know what else to try.

One helpful thread they pointed me to was a hardware req of gknotfast which states the following.

"So, how powerful of a computer will you need? As powerful as possible. It's possible to do this with a 500 MHZ processor, but the total time involved may be as much as 24 hours, depending on a number of factors. A 1 GHZ processor may take up to 12 hours. An Intel 2.4 GHZ processor may take a total of 6-7 hours or so, and the fastest of today's processors may take 4-5 hours. In addition, the quality and amount of RAM is an important factor. Make sure that your computer is as stable as possible. Overclockers, especially, should be aware of this. The fact that you can play Counterstrike all day with no problems means nothing when it comes to video encoding. There is very little that you can do on a computer that stresses it as much as video encoding. One sign of an unstable computer is if the audio or video encoding causes the computer to crash at random places; that is, at different places during subsequent attempts. These crashes may take the form of a complete freeze up, a blue screen, or a reboot. The cause is often heat buildup, but it may also be brought about by CPU or memory problems, or something more obscure."

 
Why do you say 2-3 hours??? Can you pinpoint the time a bit better then that??? I mean I ran my test many times and I usually got very little time fluctuation like less then 1-2minutes top....

Back in my 5.03pro days I had ran the test on 3 systems encoding Gone in 60 seconds (2hr10min) done with 2cd rip in mind with 704x(?) (basically no reduction in resolution...which later in life as help immensely now I am converting them back to DVD standard of 720x480 (no resizing is needed)) 2 pass.....I had all other pro settings the same in all test...virtually identical....only includes time for video and not the besweet audio encoding and subsequent merging of audio and video

AMD 1600+ (work pc) = 3hr 44min
P4 1.6a = 3hr 24min
p4 1.6a@2.4 = 2hr 33min
p4 1.6a@2.74 = 2hr 13min
p4 2.4b = 2hr 36min (slower system bus then 1.6a@2.4)
p4 2.4b@3.24 = 1hr 58min

I wish I could do the 2.6c@3.25ghz but since the 5.03 pro codec is not HT enabled I don't think the score will be much more then say 8-10 minutes faster and most of that being the dual ddr and the higher fsb and memory speed which in most apps only gained about 5-10% in apps I run that I tested....HT enabled codec like 5.10 I believe should garner you up to 10% from what I read at doom9 to an equal non ht enabled cpu....
 
2-3 hours depending on length of movie.

Right now.. i'm encoding a 2 hour :20 minute film.
Expected total time : 2:26
Elapsed time is 1:31 with the bar less then half to go.


This is only for 1 pass.

You were getting p4 2.4b@3.24 = 1hr 58min... for 2 passes? .. so 59 min per pass?



Something must be wrong with my setup ... also according to the guide my perfromance setting was to be set to slowest to get the best quality. Is that what you set too?

 
I read that at doom9 that the new codec defaults to slowest...I can't remember but I usually picked sharp bicubic to neutral bicubic which was slower then the rest at codec 5.03....Bilinear was much faster...

I knw the newer codecs are rumored to take longer but do a better job..the time should not be that indicative of the state of divx codec cause many advancements have been made to it up to now and codec 5.1.1....I was just showing that I am accustomed to seeing improvement with overall system speed, higher fsb bandwidth, and higher mem speed...
 
I've divxed over 200 movies with Gknot over the past 2 years and if you know anything about Virtual dub ( the Program that Gknot use?s to encoding ) you will know that it loves a mix of CPU Clock cache Memory, Ram .. with a sprinkle of Hard drive

OK Dual CPU?s work the best with Gknot and a slow Dual 2000+ AthlonMP At 1.67Ghz System will work great 60-70 FPS Constant and do a 2 part divx of a 2 hour movie in under 1 and a half hours

That?s with Divx 5.1 and the latest Gknot the Cache on each CPU is the key to getting more done quicker

Your Overclocked 3.3Ghz P4 should get around 55-65 FPS ?. Anandtech encodes files at a different rez the higher rez the slower FPS that?s probably why they get 100FPS they use a lower rez.

Just so you know with a 2Ghz Athlon XP 2400+ I can divx at 40-55FPS and with a 2500+ 1.8Ghz I do the same divx at the same 40-55FPS ? overclocked 2500+ too 3200+ the divx is at 50-65FPS theres a jump in the Athlon there should be a jump in the P4
 
Originally posted by: Duvie
haven't ran gknot in about 4 months since I really have no use for divx encoding anymore...Now I have a dvd burner and I am more interested in converting my divx files to mpeg2 to burn on dvd-rs....
Click to expand...

Duvie
How many Divx's have you got to move over too Mpeg2 so you can watch on a DVD player ... i havent been able to get it too work

Ohh and if you get a Projector for your comp your Divx List will become a move library and BANG ... you have yourself a personal cinema !!!! allot better then watching them on DVD disks on the DVD player on the TV
 
Originally posted by: videoclone
Originally posted by: Duvie
haven't ran gknot in about 4 months since I really have no use for divx encoding anymore...Now I have a dvd burner and I am more interested in converting my divx files to mpeg2 to burn on dvd-rs....
Click to expand...

Duvie
How many Divx's have you got to move over too Mpeg2 so you can watch on a DVD player ... i havent been able to get it too work

Ohh and if you get a Projector for your comp your Divx List will become a move library and BANG ... you have yourself a personal cinema !!!! allot better then watching them on DVD disks on the DVD player on the TV
Click to expand...


I have converted about 8 with about 40 more to go.....I am using TMPGenc 2.5, Nanub (version x, came with my gknot 0.28 pack), and ifoedit95...

I am trying to get around to getting a quick guide for ppl to do it, but have been busy of late....

I use nanub to append my two divx files (2 cd-rip, part 1 and part 2) without audio...I rip a wav file out of that separately...

Then I go to TMPGenc and encode only the video portion to a m2v file....

Then I go to Ifoedit and hit author DVD and ick the m2v file for video and the wav for audio....It will create the ifo,bup, and vob files for ready to burn...


The toughest thing is to set up TMPGenc the best way....I have played around with that and came up with some decent method IMO. The one thing I have learned is by doing my Divx files with the higher rez where I just removed the bars and did not shrink the res I have had flawless transfers...the res changed ones I have had some issues with how it looks and working around not having cropped edges or bars stll left over.
 
100fps lol....... more like 4-5fps maybe. 5.1 divx is much slower at slowest setting, for better quality of course. fastest is old slowest.
 
Still have no solution to this, so i gave up.
I downloaded 5.1 divx and it's giving me 35-40 fps and 2 hours per pass on standard setting(equivalent to slowest setting in 5.0.5 as user above pointed out)
I'm encoding 640x 480 res.. ntsc standard.
Your barton is doing 45 fps without oc.. that means my system is screwed?
I just reinstalled winxp from scratch and reinstalled the new divx 5.1 and also latest gordian knot on thursday to see if there was something worn with my install. Followed the doom9.net guide to a T as usual.


is this bad for a 2.6c @ 3.3?
I was hoping my cpu upgrade would speed this up..

Originally posted by: Duvie


I haven't ran gknot in about 4 months since I really have no use for divx encoding anymore...Now I have a dvd burner and I am more interested in converting my divx files to mpeg2 to burn on dvd-rs....
Click to expand...


I got a dvd burner too but i've been burning 4-5 movies per dvd then playing it in my liteon set top dvd-player which plays divx.
Also, you can play them on a modded xbox.

 
Originally posted by: lxie123
Still have no solution to this, so i gave up.
I downloaded 5.1 divx and it's giving me 30 fps and 2 hours per pass on standard setting(equivalent to slowest setting in 5.0.5 as user above pointed out)

is this bad for a 2.6c @ 3.3?
I was hoping my cpu upgrade would speed this up..

Originally posted by: Duvie


I haven't ran gknot in about 4 months since I really have no use for divx encoding anymore...Now I have a dvd burner and I am more interested in converting my divx files to mpeg2 to burn on dvd-rs....
Click to expand...


I got a dvd burner too but i've been burning 4-5 movies per dvd then playing it in my liteon set top dvd-player which plays divx.
Also, you can play them on a modded xbox.
Click to expand...

that is cool.....


I am doing the DVD cause it will play in the 2 standalone players I have in the house plus some of my family members who may wish to borrow it and I like letting them borrow these in case they scratch them or lose them.....

Divx for me is nothing more the stress testing now.....I do 3 movie per DVD-rw disk now but I can only play them on my pc....I am not impressed watching it on 19 inches...I perfer 55" with surround sound and a nice couch.....

 
How much I couldn't find a price for it???

My dvd-rw disk cost me like 1.14 for 1x so I am not worried about slaming 3-4 movies per file....

I like the concept but dvdshrink and authoring a dvd with just the extras and audio tracks and subtitle tracks I want is pretty damn nice....
 
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