Unfortunately no I don't have a Pocket PC (no real need for one). I was just comparing about how we have learned better techniques that have led to better compression without visible loss of quality since you have (we have) started working on improving this craft.

Keep up the good work guys :D .

Racer99

@Kwag,

My test was Drumline DVD, 118 minutes, full screen, low action movie,
and the target filesize was one 80 minute CD. Tok file prediction was
very low for 704x480 (CQ 15), 528x480 (CQ 19) and 352x480 (CQ 30).
I used the current Optimal Script for v2.5x and default settings for
VCD in Tok.

1) ToK CQ predictions at any resolution very low :cry:

2) Encoding time veeeeeeerrrrry slooooooooow :cry:

3) Filesize bigger than using avisynth 2.08 :cry:

4) Picture quality pooooor (due to low CQ prediction) :cry:

I've got to wonder if this process is better than using avisynth 2.08+ :roll:

-bp

8O Something is WAY wrong bp :!:
My encoding with the current script and 2.52 is much faster than with 2.08.
Have you tried deinstalling 2.08 completely, and then installing 2.52 :idea:
The quality I have achieve now has surpassed any previous encoding I have ever done before. There's just no comparison :D

-kwag

@Kwag,

Kwag wrote:
I uninstalled avisynth 2.08 before installing 2.5.2. Everything runs without
errors, but Tok file predictions are much lower than 2.08 for the same
resolutions. Encoding times are 15+ hours at 352x240 instead
of 5 to 6 with v2.08. Filesize is also gaining weight with v2.5.2. I don't
know what magic you're using but I can't seem to duplicate anything
close to the picture quality you've getting :?

LoadPlugin("E:\DVD BACKUP\1 - DVD2KVCD\3 - MOVIESTACKER\Filters25\MPEG2Dec3.dll")
LoadPlugin("E:\DVD BACKUP\1 - DVD2KVCD\3 - MOVIESTACKER\Filters25\Unfilter.dll")
LoadPlugin("E:\DVD BACKUP\1 - DVD2KVCD\3 - MOVIESTACKER\Filters25\STMedianFilter.dll")
## Defined Variables and Constants ##
#
MaxTreshold = 1.58
scd_trigger = 15 # Scene change trigger value.
cf = 0 # Current frame.
lf = 0 # Last frame
val = 0 # Dynamic value applied to filters
#
####

## Main section and static filters ###
#

Mpeg2Source("D:\Temp\movie.d2v")

Limiter()
UnFilter(50, 50)
BicubicResize(528,480)
STMedianFilter(8, 32, 0, 0 )
TemporalSoften(2,7,7,3,2) # Experimental!
MergeChroma(blur(1.50))
MergeLuma(blur( 0.1))
#
####

## Dynamic Linear Adaptive filtering and Scene Change Detection ##
#
FrameEvaluate("cf = YDifferenceToNext()")
FrameEvaluate("val = (cf / 16) + 0.1")
ScriptClip("((cf - lf) < scd_trigger) ? (val < MaxTreshold) ? MergeLuma(blur(val)) : MergeLuma(blur(MaxTreshold)) : MergeLuma(blur(1.5))")
#
####

#LetterBox( Your_Values_Here ) # Depends on situation. Use MovieStacker!
#AddBorders( Your_Values_Here ) # Depends on situation. Use MovieStacker!
Limiter()
FrameEvaluate("lf = YDifferenceToNext()")
#
####
-bp

Hi bp,

Could this be a processor related issue :?:
I'm on a P4 @1.6Ghz. Are you on Intel or AMD :?:

-kwag

Bug Squashed !!!
 

New script posted :!:

:imstupid: There was an almost invisible problem on the previous posted script. It was very hard do see, but it was present if you looked at your .avs and moved frame by frame with VirtualDub. The third frame after every scene change was slightly blurred, in comparison to the adjacent frames. It's been squashed :!: :gun: I also added a "Version" to the script, so we can all keep track of the last date/time modified. I hope this script can now create a basic framework so we all can grow it, and apply different filters (if nedded!) for different filtering strategies.

-kwag

Im using the newest script posted, but while the movie is encoding I get this green bar along the right side in TMPGenc. Does anyone know what causes this?..Here is my script from TOK

## DLL Section ##
#
LoadPlugin("C:\Filters25\MPEG2Dec3.dll")
LoadPlugin("C:\Filters25\STMedianFilter.dll")
LoadPlugin("C:\Filters25\UnFilter.dll")
#
####

## Defined Variables and Constants ##
#
MaxTreshold = 1.58
scd_trigger = 15 # Scene change trigger value.
nf = 0 # Current frame.
lf = 0 # Last frame
val = 0 # Dynamic value applied to filters
#
####

## Main section and static filters ###
#
Mpeg2Source("C:\DVD\matrix.d2v")
Limiter()
UnFilter(50, 50)
BicubicResize( 352,240,0,0.6,8,0,740,480 )
STMedianFilter(8, 32, 0, 0 )
TemporalSoften(2,7,7,3,2) # Experimental!
MergeChroma(blur(1.50))
MergeLuma(blur( 0.1))
#
####

## Dynamic Linear Adaptive filtering and Scene Change Detection ##
#
FrameEvaluate("lf = YDifferenceToNext()")
FrameEvaluate("nf = YDifferenceToNext()")
FrameEvaluate("val = (lf / 16) + 0.1")
ScriptClip("((nf - lf) < scd_trigger) ? (val < MaxTreshold) ? \
MergeLuma(blur(val)) : MergeLuma(blur(MaxTreshold)) : \
( (sign(nf-lf)) != -1) && (val < MaxTreshold) ? MergeLuma(blur(val)) : MergeLuma(blur(.75)) ")
#
####

#LetterBox( 16,16,16,16 ) # Depends on situation. Use MovieStacker!
#AddBorders( 16,16,16,16 ) # Depends on situation. Use MovieStacker!
Limiter()
#
####
AssumeFPS(23.976)
LoadPlugin("C:\TOK\ToK_EXTRAS\Sampler\Sampler-2.5.dll")
oldfps = framerate
interval = round((FrameCount/24)/59.940)/10
nFrames = round(24)
SelectRangeEvery( (round(framecount/interval)),nFrames)


David

What green bar David 8O :?:

-kwag

Yeah I get that, I was just floating the idea of a nonlinear function as it could possibly produce visually better results - less blurring on more low motion scenes, but increased blurring with higher motion. Im normally working with low quality non-DVD sources so I'd like to maintain as much noticeable detail as possible, only blurring when it won't be noticed.

Ignore me, Im just thinking "out loud" :)

Yep, but with the line at the end I thought you might be comparing the filtered current frame with the non-filtered next frame (which seemed wrong), but I'm not sure which next frame (filtered or not) AVISynth would use for YDifferenceToNext (sh0dan?)

Anyway you've changed the script now so it doesn't matter :)

Re: Bug Squashed !!!
 

I've been experimenting with blurring 2-3 frames after the scene change, the theory being that at 24fps 3 frames ~= 0.1s which is the shortest time interval your eyes can react to (like your eyes run at 10Hz :). Should give more compression for no visual difference...I think :)

Re: Bug Squashed !!!
 

Yes, it might be a good idea to try, maybe blur the two frames after the scene change :idea: I'm not sure if I would blur 3 frames though :?, it might be visible. How about bluring the frame "before" the scene change, and 2 frames "after" the scene change :idea: :idea:
Right now, the script blurs only the frame after a scene change, using mergeluma(blur(MaxTreshold)).

-kwag

Problem with mergeluma now corrected.
 

I've found what's possibly a bug in AviSynth and/or mergeluma.
After doing a test encode, I see some scenes where there's no scene change at all, and one frame slightly increases brightness. It looks like a small "flash". I've traced the problem to be when mergeluma blur value makes a transition from around ~0.180 to ~0.205.
I've corrected this by changing the minimum value to be 0.2.
So now mergeluma fluctuates between min=0.2 to max=1.58.
I have been able to reproduce the problem consistently. Here's a very short mpeg file which shows the effect:

www.kvcd.net/flash.mpg

And here's the same clip with the corrected min of .2 showing a clean clip:
www.kvcd.net/no-flash.mpg

The current script posted corrected this.

-kwag

I'm on AMD Athlon XP1800+ and the new script looks beautiful... :roll:

Re: Problem with mergeluma now corrected.
 

Aggh! Beat me to the Submit button :D I'd noticed this as well and the 0.1-0.2 transition point. Thanks for the fix!

Re: Problem with mergeluma now corrected.
 

:wink:
I just PM'ed sh0dan about it :)

-kwag

Just a quick (and stupid :oops: ) question...

Where in the script are you supposed to put the lines:

FieldDeinterlace()
or
Telecide()
Decimate()

Am I correct to presume I should put them directly after the first Limiter() line?

Newbie warning, I know... Sorry! :roll:

Put them right after the source line where you open the .d2v :)

-kwag

Thanks kwag! :wink: I just wanted to be sure to get it right.
You're the Man! 8)

I need a simple script to reproduce this.

Does this happend with or without mergeluma? (When you just blur)?

Hi Kwag,

In testing the new script I have noticed that on scenes with very little action the image seems to shift from left to right.... The Scene I'm looking at is from the movie "Meet the Parents" when they are at the dinner table. You can see the glass wine move from left to right... I have just tried this a couple of minutes ago with the last script you posted.

I don't notice this effect in scene with action/movement... Have you notice the same?