digitalFAQ.com Forums [Archives] - KVCD: Uncompressable movies??

digitalFAQ.com Forums [Archives] (http://www.digitalfaq.com/archives/)

- Video Encoding and Conversion (http://www.digitalfaq.com/archives/encode/)

- - KVCD: Uncompressable movies?? (http://www.digitalfaq.com/archives/encode/4583-kvcd-uncompressable-movies.html)

Uncompressable movies??

Well I made quite a few KVCDS for a while and I never noticed what happened to me with my last to movies (AVI sources) Both movies are ~90mins so they usually fit`s wonderfull in 704x480 or better in 480x480 when to much action. Now this 2 movies I made are not to much action and for the first 1 I used AVS 2.07 and the 2nd 2.5.2. And The last one I can only get 62,8 CQ?? with 2200Max 150Min bitrate. For the previous one was even worst since I have to move to 352x480 to get 69CQ. What can be wrong? this are the 2 scripts I used

Code:

viSource("D:\Movies-videos\test\evildead3.avi")

LegalClip() 

GripCrop( 480, 480, overscan=2 ) 

GripSize(resizer="BicubicResize") 

STMedianFilter(8, 32, 0, 0, 8, 32) 

# SpaceDust() # Optional - for some "not so clean" DVDs. 

unfilter(30,30)

Blockbuster(method="noise", variance=.5, seed=1)

temporalsmoother(1,2) 

##mergechroma(blur(1.50)) 

##mergeluma(blur(0.2)) 

# Convolution3d or DCTFilter for extreme worse cases. 

GripBorders()

TextSub("D:\Movies-videos\hero480.ssa") 

##AssumeFPS(23.976)

LegalClip()

Sampler(length=24)

Code:

## DLL Section ## 

# 

LoadPlugin("D:\Movies-videos\Codecs2.5\MPEG2Dec3.dll") 

LoadPlugin("D:\Movies-videos\Codecs2.5\GripFit_YV12.dll") 

LoadPlugin("D:\Movies-videos\Codecs2.5\STMedianFilter.dll") 

LoadPlugin("D:\Movies-videos\Codecs2.5\asharp.dll") 

LoadPlugin("D:\Movies-videos\Codecs2.5\unfilter.dll") 

LoadPlugin("D:\Movies-videos\Codecs2.5\undot.dll") 

LoadPlugin("D:\Movies-videos\codecs2.5\Sampler-2.5.dll")

LoadPlugin("D:\Movies-videos\codecs2.5\VSFilter.dll")

# 

#### 



## Defined Variables and Constants ## 

# 

MaxTreshold = 1.50 

nf =  0 # Current frame. 

# 

#### 



## Main section and static filters ### 

# 

AviSource("D:\Movies-videos\test\spun.avi") 

# 

undot() 

Limiter() 

asharp(1, 4) 

##BilinearResize(448,352,22,0,596,352)

##AddBorders(16,64,16,64)

GripCrop(480, 480, overscan=2) 

GripSize(resizer="BicubicResize") 

STMedianFilter(8, 32, 0, 0 ) 

MergeChroma(blur(MaxTreshold)) 

MergeLuma(blur(0.1)) 

# 

# 



## Linear Motion Adaptive Filtering ## 

# 

# ( Portions from AviSynth's manual ) - This will apply temporalsoften to 

# very static scenes, and apply variable blur on moving scenes. 

# We also assign a variable - and this is why a line break is inserted: 



SwitchThreshold = (Width<=352) ? 4 : (Width<=480) ? 3 : 2 

ScriptClip("nf = YDifferenceToNext()"+chr(13)+ "nf >= SwitchThreshold ? \ 

unfilter( -(fmin(round(nf)*2, 100)), -(fmin(round(nf)*2, 100)) ) : \ 

TemporalSoften( fmin( round(2/nf), 6), round(1/nf) , round(3/nf) , 1, 1) ") 



# 

# 

# 



GripBorders() 

#LetterBox( Your_Values_Here ) # Depends on situation. Use MovieStacker! 

##AssumeFPS(23.976)

TextSub("D:\Movies-videos\test\Spun.ssa")

Limiter() 

Sampler(length=24)

# 

# 

## Functions ### 



function fmin( int f1, int f2) { 

  return ( f1<f2 ) ? f1 : f2 

} 



# 

####

Any tips?

i have had similar problems with movies that will not compress :)

it is basically because some movies just don't because of a lot of things like brightness, amount of action and how clean the source is.

i wouldn't worry about it, i don't think anything is wrong :idea:

Guys,

Tale a look at my post #7 here: http://www.kvcd.net/forum/viewtopic.php?t=4964&start=32

Try to calculate your CQ again, and see if you get a different number ;)

-kwag

wow this looks promising :D

off to test now :!:

sorry to be an idiot, but where in movie stacker do i find the average bit rate :?: :oops:

Quote:

Originally Posted by kinggee

but where in movie stacker do i find the average bit rate :?:

Under the "Video Stream" frame, on the "Resize & Video Stream" tab :)

-kwag

ahh i see it - 873, that sounds about right :)

many thanks

Quote:

Originally Posted by kinggee

sorry to be an idiot, but where in movie stacker do i find the average bit rate :?: :oops:

it's not an idiot question my friend

is in the bottom of the "resize and video stream" tab
in the "video stream" (in dark blue color)

:wink:

editing:
:P
oops, i answer in slow motion,
the "faster double click" came faster!
:lol:

Quote:

Originally Posted by kinggee

ahh i see it - 873, that sounds about right :)

many thanks

873 - 43% = 497.61
So set your MIN to that ( or 498 in ToK, because ToK doesn't allow decimals )

-kwag

Well thanx for the tip I`m gonna try it tomorrow after all I`m just 1,5 hs away of finishing the encoding, so I`m gonna compare betterif I let it finish.
But isn`t 2000Kbs to low? I mean what about action movies?
My problem wasn`t about acurate in the prediction ony low CQ, but I will cheq further tomorrow it`s to late now and I need some sleep :oops:

Quote:

Originally Posted by AgNa

But isn`t 2000Kbs to low? I mean what about action movies?

Play it :mrgreen: http://www.kvcd.net/boon-action.mpg

-kwag

Well I gave it a try this morning and it truned down my CQ by 1,5 points :roll: I wasn`t totally happy with the result so I went for another full encode at 352x480 (200min, 2200Max) and I got 9 more points in CQ. So I think It`s gonna look better. Maybe I`m gonna do some test using your method Kwang but I don`t like the results when lowering the bitrate so much, your sample looks good but not so good as others KVCDs I saw. So for now, and until another better method arrives, I`m gonna keep lowering to 352x480 in this kind of movies, or just going for 2 cd`s when the movie deserves it :D

Of course you had more points :!: That's because you increased the distance from the MIN to the MAX, and the encoder has to compensate for the loss of dynamic range :!: It now has a larger bitrate swing to take care of.
The CQ is only a reference, and you can't rely on the value. That's why you got a lower CQ with a MAX of 2,000. But quality wise, it will be better than with the higher CQ and larger MIN, MAX :!:
That is, referenced to a same file size on both encodes.

-kwag

well maybe I didn`t explain my self to clear or I didn`t understand you totally

A) 480x480 - 2200max - 150 min = 62.7 CQ
B) 480x480 - 2000max - 422.69min = 61 CQ
C) 352x480 2200max -200 min = 71 CQ
D) 352x480 2000max - 422.69min = 69CQ

That`s why I decided to go for C :D

Take a look at your D sample. It should be better than your C sample ;)
Also, B will be better than A.

-kwag