Quantcast File Prediction Experiment #1,000,000 - Page 4 - digitalFAQ.com Forums [Archives]
  #61  
07-18-2003, 11:51 AM
kwag kwag is offline
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Quote:
Originally Posted by bigggt
HI,does anyone know if this works with avi's because when i load them into moviestacker the average bitrate is like 1000-1300 which in turn would make the min bitrate around 600 or so.Is 600 min going to make the encode like like crap.

Thanx
It should work the same with AVIs. Same principles apply.

-kwag
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  #62  
07-18-2003, 06:06 PM
break break is offline
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It seems not to work with PAL system.
I try prediction with "The Matrix" for one CD at 704x576 (I have recently encoded it at that resolution with CQ 56):
- average bitrate 755 (cutting end credits)
- set min=430 / max 2000 (using ToK 0.0.5.2, Avisynth 2.5x and last script)
- factor for prediction 1,02 (overburning)
- new faster prediction (Tenra) with precision 0,5%
- lenght of sample 24 / nr. of sample 1
- audio 128 and GOP 25

Ended prediction with factor of apprx. 34...

Any idea?

I rest with my method, working for me (PAL): standard setting in ToK (v0.0.5.2), but with nr. of sample set to "2", GOP 25 and lenght of sample 24 (works also well with fast prediction).
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  #63  
07-18-2003, 06:24 PM
kwag kwag is offline
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Quote:
Originally Posted by break

Any idea?
Yes. Do a manual prediction with "Sampler()"

-kwag
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  #64  
07-19-2003, 07:18 AM
break break is offline
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kwag wrote:
Quote:
Yes. Do a manual prediction with "Sampler()"

-kwag
With manual prediction:
frames 186314
time 02:04:13
PAL 25 frames
186314/124/25 = 60,10
800 MB - 115 MB (audio) = 685 MB (for video)
685/60,10 = 11,39 MB (size for sample)

found CQ 57,3 (at 11,4 MB) :P

Well, but now the most important thing: encoding!

Thanks kwag, as soon as possible I post my result...

EDIT:
Well, encoding finished, final file size is 686 MB!

-break
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  #65  
07-19-2003, 11:27 AM
vhelp vhelp is offline
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Hello peoples

Does anyone have any good .AVS samples of the "sampler" for the
manual prediction method ??

All I have (after a careful search) is what I got (below) but I know there
are some missing pieces before and after hte Sampler() ...
Note, I'm not using MStacker (nor do I have it installed) I'm simply
trying to understand the "prediction" process

Code:
 Sampler(length=24)
Thank you all,
-vhelp
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  #66  
07-19-2003, 02:50 PM
break break is offline
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Quote:
Originally Posted by vhelp
Hello peoples

Does anyone have any good .AVS samples of the "sampler" for the
manual prediction method ??

All I have (after a careful search) is what I got (below) but I know there
are some missing pieces before and after hte Sampler() ...
Note, I'm not using MStacker (nor do I have it installed) I'm simply
trying to understand the "prediction" process

Code:
 Sampler(length=24)
Thank you all,
-vhelp
The only thing I do, is to add as last line to my AVS script the command "Sampler(lenght=24).
Then I launch TMPGEnc to create sample video, after I found exact size I want, comment last line (sampler command) with "#", and encode the full movie.
I remember you the great Kwag guide for understand manual prediction
here: http://www.kvcd.net/forum/viewtopic.php?t=2102

I hope this can help you.

-break
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  #67  
07-19-2003, 02:55 PM
vhelp vhelp is offline
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hi break..

Thanks for your response. Actaully, I have read that link - many times, and
am still a bit dazed at it. But, in any case, I don't think it is used any longer,
per Kwag's recommend (elsewheres) where he (in so many words)
said, this is the new prefered method or something like that. I can't remember.

But, I read that that link has some issues w/ which page has the actual
how-to preduct process.

Sooner or later, I'm bound to get it. At the moment, I'm resarching one
too many things

Thanks again pal,
-vhelp
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