Sasovics
28th February 2003, 22:52
Hi all!
I've encoded Scorpion King, PAL source at 927 average kbps (aimed for 1 CD), using avisynth as frameserver, resolution at 640 x 272 NeutralBicubic filtering. The final result was quite good (65 of DivX quality) except this one. scorpion.png (http://www.volny.cz/buckin/scorpion.png) Look at the attached picture. It is a scene in the beginning, when barbarians are trying to kill Rocks brother. Quite dark scene. If you zoom the picture a bit (depend on what resolution u are using on your desktop - I had to zoom it 200% of original size to get the same size as in Windows Media Player full screen mode, at my 1280x1024 desktop resolution).
Can you see that noise, especially on the faces those twos ?
But what is strange, lighter pictures are really crisp and clear. Without any noise.
I've tried different filters to get it out.
First I've encoded it with convolution3D (preset = movieHQ), which
I've put it before resize filter.
Then tried without it,
then TemporalSoften(1,5,0) with and without CNR2 (Chroma Noise reduction)
and finaly without any filters. Only cropping and resizing.
My DVD source is really crisp and clean, so no way it's because of source. But in other hand, I think it is not because of wrong filter settings in avisynth script too, 'cause without any settings the quality of those dark scenes was even worse.
just one thing remains. Wrong codec settings ?
I am using DivX 3.11 SBC with GordianKnot Stats file Editor.
Here is my all settings I've used
Avisynth script:
LoadPlugin("C:\PROGRA~1\GORDIA~1\mpeg2dec.dll")
LoadPlugin("C:\PROGRA~1\GORDIA~1\Convolution3D.dll")
#LoadPlugin("C:\PROGRA~1\GORDIA~1\cnr2.dll")
# SOURCE
mpeg2source("D:\DVD1\scorpion.d2v")
# CROPPING
crop(0,76,720,432)
Convolution3d (preset="movieHQ")
# DENOISING LUMA
#TemporalSoften(1,5,0)
# DENOISING CHROMA
#Cnr2()
# RESIZING
BicubicResize(640,272,0,0.5)
After succesfull 1st pass I've loaded my stats file into GordianKnot stats file reader and tweaked it a bit (using manono's suggestions)
Luma disbled
F-Size correction -> 33% (to get minimum bitrate to 300kbps)
Motion correction -> 99%
Key Frames: Max. distance -> 250 Min. distance -> 25
For second pass I've used GordianKnot_default.vcf with calculated stats file and ecf file.
Any help appreciated.
Thanx a lot.
Sasovics
I've encoded Scorpion King, PAL source at 927 average kbps (aimed for 1 CD), using avisynth as frameserver, resolution at 640 x 272 NeutralBicubic filtering. The final result was quite good (65 of DivX quality) except this one. scorpion.png (http://www.volny.cz/buckin/scorpion.png) Look at the attached picture. It is a scene in the beginning, when barbarians are trying to kill Rocks brother. Quite dark scene. If you zoom the picture a bit (depend on what resolution u are using on your desktop - I had to zoom it 200% of original size to get the same size as in Windows Media Player full screen mode, at my 1280x1024 desktop resolution).
Can you see that noise, especially on the faces those twos ?
But what is strange, lighter pictures are really crisp and clear. Without any noise.
I've tried different filters to get it out.
First I've encoded it with convolution3D (preset = movieHQ), which
I've put it before resize filter.
Then tried without it,
then TemporalSoften(1,5,0) with and without CNR2 (Chroma Noise reduction)
and finaly without any filters. Only cropping and resizing.
My DVD source is really crisp and clean, so no way it's because of source. But in other hand, I think it is not because of wrong filter settings in avisynth script too, 'cause without any settings the quality of those dark scenes was even worse.
just one thing remains. Wrong codec settings ?
I am using DivX 3.11 SBC with GordianKnot Stats file Editor.
Here is my all settings I've used
Avisynth script:
LoadPlugin("C:\PROGRA~1\GORDIA~1\mpeg2dec.dll")
LoadPlugin("C:\PROGRA~1\GORDIA~1\Convolution3D.dll")
#LoadPlugin("C:\PROGRA~1\GORDIA~1\cnr2.dll")
# SOURCE
mpeg2source("D:\DVD1\scorpion.d2v")
# CROPPING
crop(0,76,720,432)
Convolution3d (preset="movieHQ")
# DENOISING LUMA
#TemporalSoften(1,5,0)
# DENOISING CHROMA
#Cnr2()
# RESIZING
BicubicResize(640,272,0,0.5)
After succesfull 1st pass I've loaded my stats file into GordianKnot stats file reader and tweaked it a bit (using manono's suggestions)
Luma disbled
F-Size correction -> 33% (to get minimum bitrate to 300kbps)
Motion correction -> 99%
Key Frames: Max. distance -> 250 Min. distance -> 25
For second pass I've used GordianKnot_default.vcf with calculated stats file and ecf file.
Any help appreciated.
Thanx a lot.
Sasovics