Belgarad
2nd May 2002, 15:03
"sometimes horizontal lines in horizontal moving areas" ...Well i hope that is the best describtion of what i mean.
Basically it looks like an interlaced issue to me.
I am using cce (inside dvd2svcd) to encode a recording from my dvb-receiver (mpge2)
It works fine but sometimes i get the effect mentioned above.
Usally i open the recorded mpeg2 stream with bitrate view to get some parameter and then use the proper settings for doing the encoding with cce.
here the examples of the one that fails and the one that was ok(details from bitrateview):
(note that i used PVAStrumento prior to the encoding)
==========FAILED==================
Nom. bitrate: 1968800 Bit/Sec
VBV buffer size: 71
Constrained param. flag: No
Chroma format: 4:2:0
DCT precision: 10
Pic. structure: Frame
Field topfirst: Yes
DCT type: Field
Quantscale: Nonlinear
Scan type: Alternate
Frame type: Interlaced
Settings within dvd2svcd:
======================
Encoder settings (dvd2svcd 1.08) used:
Buttomfield first =on
Linear Quantizizer = on
Intra Decision Auto = off (10)
And here on that worked fine:
===========OK=================
Nom. bitrate: 1943600 Bit/Sec
VBV buffer size: 112
Constrained param. flag: No
Chroma format: 4:2:0
DCT precision: 8
Pic. structure: Frame
Field topfirst: Yes
DCT type: Field
Quantscale: Nonlinear
Scan type: ZigZag
Frame type: Interlaced
Settings within dvd2svcd:
======================
Encoder settings (dvd2svcd 1.08) used:
Buttomfield first =on
Linear Quantizizer = on
Intra Decision Auto = off (10)
Zig Zag = on
And here my CCE Settings i used, Generic AVS (created by dvd2svcd):
========================================================
LoadPlugin("D:\APPS\DVD2SVCD\SIMPLE~1\SIMPLE~1.DLL")
LoadPlugin("D:\APPS\DVD2SVCD\MPEG2Dec\mpeg2dec.dll")
mpeg2source("D:\Daten\Video\DVD2SV~1\DVD2AV~1.D2V")
SimpleResize(480,432)
AddBorders(0,72,0,72)
ResampleAudio(44100)
Although bitrate view tells me that both files use "Field top first=yes", i have to select "buttomfield first = on". If i do not, than i have real jerky horizontal movement.
Mabye it has something to do with the value of "DCT precision: 8
"?
Basically it looks like an interlaced issue to me.
I am using cce (inside dvd2svcd) to encode a recording from my dvb-receiver (mpge2)
It works fine but sometimes i get the effect mentioned above.
Usally i open the recorded mpeg2 stream with bitrate view to get some parameter and then use the proper settings for doing the encoding with cce.
here the examples of the one that fails and the one that was ok(details from bitrateview):
(note that i used PVAStrumento prior to the encoding)
==========FAILED==================
Nom. bitrate: 1968800 Bit/Sec
VBV buffer size: 71
Constrained param. flag: No
Chroma format: 4:2:0
DCT precision: 10
Pic. structure: Frame
Field topfirst: Yes
DCT type: Field
Quantscale: Nonlinear
Scan type: Alternate
Frame type: Interlaced
Settings within dvd2svcd:
======================
Encoder settings (dvd2svcd 1.08) used:
Buttomfield first =on
Linear Quantizizer = on
Intra Decision Auto = off (10)
And here on that worked fine:
===========OK=================
Nom. bitrate: 1943600 Bit/Sec
VBV buffer size: 112
Constrained param. flag: No
Chroma format: 4:2:0
DCT precision: 8
Pic. structure: Frame
Field topfirst: Yes
DCT type: Field
Quantscale: Nonlinear
Scan type: ZigZag
Frame type: Interlaced
Settings within dvd2svcd:
======================
Encoder settings (dvd2svcd 1.08) used:
Buttomfield first =on
Linear Quantizizer = on
Intra Decision Auto = off (10)
Zig Zag = on
And here my CCE Settings i used, Generic AVS (created by dvd2svcd):
========================================================
LoadPlugin("D:\APPS\DVD2SVCD\SIMPLE~1\SIMPLE~1.DLL")
LoadPlugin("D:\APPS\DVD2SVCD\MPEG2Dec\mpeg2dec.dll")
mpeg2source("D:\Daten\Video\DVD2SV~1\DVD2AV~1.D2V")
SimpleResize(480,432)
AddBorders(0,72,0,72)
ResampleAudio(44100)
Although bitrate view tells me that both files use "Field top first=yes", i have to select "buttomfield first = on". If i do not, than i have real jerky horizontal movement.
Mabye it has something to do with the value of "DCT precision: 8
"?