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#1
04-27-2004, 04:31 PM
 zagor Free Member Join Date: Feb 2004 Location: Italia Posts: 226 Thanks: 0 Thanked 0 Times in 0 Posts
hello, I have read all the thread written from incredible:

I have created a avi of 30m in order making of the tests.
I have used:
slicer (2,15,0,2,1) for ping
slicer (2,15,30,2,1) for pong

with ping I have 4274 kb
with pong I have 4358 kb

medium value is of 4316 kb

previewed filesize 4311*100/2 = 215,800 kb

final resulting has been of 196.172 kb (less of the 9,09 %).

I would want to know if all this is right and that precision has the method ping-pong.

thanks
Someday, 12:01 PM
 Site Staff / Ad Manager Join Date: Dec 2002 Posts: 42 Thanks: ∞ Thanked 42 Times in 42 Posts
#2
04-27-2004, 05:10 PM
 incredible Free Member Join Date: May 2003 Location: Germany Posts: 3,189 Thanks: 0 Thanked 0 Times in 0 Posts
Quote:
 Originally Posted by zagor medium value is of 4316 kb previewed filesize 4311*100/2 = 215,800 kb final resulting has been of 196.172 kb (less of the 9,09 %).

Maybe I cant follow but ...

In your case 4316kb would end in 215800 kb, ok ... how do you come to 4311?

Maybe you should try:

Ping : Slicer(2,15,05,2,0)
Pong: Slicer(2,15,30,2,0)

As by this you can avoid predictionning the first 5 Mins where almost every Movie in its "intro" got very much dark.

Maybe even Ping-Pong did not catch a very dynamic scene in your movie, ... so you can assume what would happen if you would have predicted the "regular" way
#3
04-27-2004, 05:11 PM
 Prodater64 Free Member Join Date: Mar 2003 Location: Palma de Mallorca - España Posts: 2,925 Thanks: 0 Thanked 0 Times in 0 Posts
Your difference in 800 MB file, it woul be about 60MB. It is to much difference.
Do you run a safe ping test?
Could you run ping pong prediction with slicer function Prodater64Mod (look at end of the pingpong thread) and compare with your results?
#4
04-28-2004, 03:26 PM
 zagor Free Member Join Date: Feb 2004 Location: Italia Posts: 226 Thanks: 0 Thanked 0 Times in 0 Posts
@prodator64
I would want to understand the incredible method's and then using your modified ruotine, otherwise I risk not to understand nothing.

@incredible
you can explain in way simple and schematic all the passages to me in order to apply your method?

thanks
#5
04-28-2004, 05:19 PM
 incredible Free Member Join Date: May 2003 Location: Germany Posts: 3,189 Thanks: 0 Thanked 0 Times in 0 Posts
Heres everything explained incl. the function, pics and all you need:
http://www.kvcd.net/forum/viewtopic.php?t=7626&start=1
#6
05-04-2004, 03:13 PM
 zagor Free Member Join Date: Feb 2004 Location: Italia Posts: 226 Thanks: 0 Thanked 0 Times in 0 Posts
hello incredible, I would want to know some things:

1. If I use a percentage of 5% instead of 2% for the prediction, I will have a best prediction?

2. the recommendation in order to find the offset one to parity of gop and gl depends by sa, that is if I use 5% offset will be always 12, right?

3. You can tell me, large way, that error percentage you have, as an example

I have: sampler(15) ---> 6025 kb
previewed Kb 602500
real Kb 551399 kb

error with normal prediction (+8,48%)
error with ping pong (2%): (+4,11%)
error with ping pong (5%): (+2,43%)

are in the average?

by
#7
05-04-2004, 04:40 PM
 incredible Free Member Join Date: May 2003 Location: Germany Posts: 3,189 Thanks: 0 Thanked 0 Times in 0 Posts
1) if using 5% at ping-pong you in real do predict 10%!! of the movie as you do predict using 2 offsets ... means for example 05 and 35.
A prediction using ping pong of 2% is TOTALLY enough

2)
Quote:
 the recommendation in order to find the offset one to parity of gop and gl depends by sa, that is if I use 5% offset will be always 12, right?
Waht do you mean?? I didnt understand.
The internal calculator does its calcualtion in a way that the samples of the 2nd offset (pong) always will be almost in the middle between the ping samples (see my green graphic in the link of the "long-short vs. ping pong" thread)

3) Again I didn't understand.
I do always use 2% and sometimes a gl of 1 and sometimes a gl of 2 , so try a goplenght multiplicator (gl) of just 1 (offset decreases automatically) and tell me what results.
As told I got everytime about 98% acuracy.
#8
05-08-2004, 01:45 PM
 zagor Free Member Join Date: Feb 2004 Location: Italia Posts: 226 Thanks: 0 Thanked 0 Times in 0 Posts
then, my objective is this:

to make the prevision for 5 films together:

using the normal method (that is sampler(lenght=15)) I get a total prevision regarding the real value of the +4,54%

using your method with
slicer(2,15,00,1,0) for the ping and
slicer(2,15,15,1,0) for the pong
I get the prevision of the +5.91% regarding the real value.

I use like encoder cce.

where's the mistake?
#9
05-08-2004, 03:06 PM
 incredible Free Member Join Date: May 2003 Location: Germany Posts: 3,189 Thanks: 0 Thanked 0 Times in 0 Posts
Quote:
 Originally Posted by zagor then, my objective is this: to make the prevision for 5 films together: using the normal method (that is sampler(lenght=15)) I get a total prevision regarding the real value of the +4,54% using your method with slicer(2,15,00,1,0) for the ping and slicer(2,15,15,1,0) for the pong I get the prevision of the +5.91% regarding the real value. I use like encoder cce. where's the mistake?
Means?

Do you say "Sampler(15) does it better or what?
Because as seen above slicer(2,15,00,1,0) does also sample eoth a sample length of 15!

Maybe you should try using slicer(2,15,00,2,0)
And therefore the higher Offset in Pong i.E. slicer(2,15,35,2,0)

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