XviD四个压片参数的不同压制效果测试解析.docx
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XviD四个压片参数的不同压制效果测试解析
在XviD中，Configuration里面各项参数的设置，将会对成品产生细微的影响，各个参数的具体含义请参看DGWXX的《XviD1.0参数详解》；本文将结合实际的压片成果对其中各项参数得到的影象画面进行讨论：
片源：
第六届中韩歌会片断（HDTV）1024x576
为了得到一个相对公平的测试结果，现在决定按照相同的设置进行同一片源的压制，唯一不同的设置将在下面详细说明：
相同设置部分
压制工具：
GordianKnot0.33.1
压缩编码：
XviD1.03
量化方式：
hvs-best
搜寻宽度：
VHQ4：
widesearch
Quantization设置：
1，2，1，5，1，31
分辨率：
740x416
目标体积：
139Mb
AVS滤镜：
降糙关闭
不同设置部分
下面我们将分别开启QuarterPixel（以下简称QP）、GlobalMotionCompensation（以下简称GMC）、仅仅使用B-VOPs和关闭B-VOPs四个不同参数进行测试；得到的结果如下：
1、开启QP
成品的DRF评测如下：
FourCC:
XVID
Codec:
XviD0037
Resolution:
[Width:
740Height:
416]
FrameRate:
23.976framespersecond
TheVideohas8472frames[00:
05:
53]
AverageFramequalityisHIGH [AverageDRF/quantizeris2.38]
StandardDeviation:
QualityisHIGH [Std.Deviationis0.54]
ImageResolutionisHIGH
ThefilehasPacketedFrames!
ThereareNOframedrops（NOdropsisbetter
RecomendedResolution:
[800x448] （TargetDRF/quantizer=2.8
Thefilesizecanbesmaller!
PerformanceCaracteristics:
ThisvideoseemstohavetooFEWKeyframes.Maydegradeimagequalityandseeking.
Macroblocksperframe:
1196（PoorPlaybackinSlowComputers,PIII450orbetterrequired
TheWidthisnotmultipleof32.Maydegradeperformanceinsomesystems.
KilobitsperSecond:
2971.32
KilobitsperFrame:
123.80
KilobitsperMacroblock:
0.104
BitsperPixel:
0.41
FrameTypeStatistics:
IFrames:
0.42%
PFrames:
63.07%
BFrames:
36.51%
SFrames:
0.00%
NFrames:
0.00%
（MoreAdvancedCodecsuseBandSframes
FrameQualityStatistics:
DRF=1&2:
5122 60.7%
DRF=3:
3246 38.5%
DRF=4:
68 0.8%
DRF=5:
0 0.0%
DRF=6:
0 0.0%
DRF=7:
0 0.0%
DRF=8:
0 0.0%
DRF=9:
0 0.0%
DRF>9:
0 0.0%
KeyF/DeltaF:
0.43%
KeyDRF<4:
31
KeyDRF=4:
0
KeyDRF>4:
5
AverageKeyDRF:
1.86
MAXDRF:
4
AverageDRF:
2.38
Deviation:
0.54
影片的第3932帧截图如下：
2、使用GMC
DRF评测：
FourCC:
XVID
Codec:
XviD0037
Resolution:
[Width:
740Height:
416]
FrameRate:
23.976framespersecond
TheVideohas8472frames[00:
05:
53]
AverageFramequalityisHIGH [AverageDRF/quantizeris2.39]
StandardDeviation:
QualityisHIGH [Std.Deviationis0.52]
ImageResolutionisHIGH
ThefilehasPacketedFrames!
ThereareNOframedrops（NOdropsisbetter
RecomendedResolution:
[800x448] （TargetDRF/quantizer=2.8
Thefilesizecanbesmaller!
PerformanceCaracteristics:
ThisvideoseemstohavetooFEWKeyframes.Maydegradeimagequalityandseeking.
Macroblocksperframe:
1196（PoorPlaybackinSlowComputers,PIII450orbetterrequired
TheWidthisnotmultipleof32.Maydegradeperformanceinsomesystems.
KilobitsperSecond:
2971.29
KilobitsperFrame:
123.80
KilobitsperMacroblock:
0.104
BitsperPixel:
0.41
FrameTypeStatistics:
IFrames:
0.42%
PFrames:
36.84%
BFrames:
36.95%
SFrames:
25.79%
NFrames:
0.00%
（MoreAdvancedCodecsuseBandSframes
FrameQualityStatistics:
DRF=1&2:
5085 60.3%
DRF=3:
3291 39.0%
DRF=4:
60 0.7%
DRF=5:
0 0.0%
DRF=6:
0 0.0%
DRF=7:
0 0.0%
DRF=8:
0 0.0%
DRF=9:
0 0.0%
DRF>9:
0 0.0%
KeyF/DeltaF:
0.43%
KeyDRF<4:
32
KeyDRF=4:
0
KeyDRF>4:
4
AverageKeyDRF:
1.89
MAXDRF:
4
AverageDRF:
2.39
Deviation:
0.52
截图：
2、使用GMC
DRF评测：
FourCC:
XVID
Codec:
XviD0037
Resolution:
[Width:
740Height:
416]
FrameRate:
23.976framespersecond
TheVideohas8472frames[00:
05:
53]
AverageFramequalityisHIGH [AverageDRF/quantizeris2.39]
StandardDeviation:
QualityisHIGH [Std.Deviationis0.52]
ImageResolutionisHIGH
ThefilehasPacketedFrames!
ThereareNOframedrops（NOdropsisbetter
RecomendedResolution:
[800x448] （TargetDRF/quantizer=2.8
Thefilesizecanbesmaller!
PerformanceCaracteristics:
ThisvideoseemstohavetooFEWKeyframes.Maydegradeimagequalityandseeking.
Macroblocksperframe:
1196（PoorPlaybackinSlowComputers,PIII450orbetterrequired
TheWidthisnotmultipleof32.Maydegradeperformanceinsomesystems.
KilobitsperSecond:
2971.29
KilobitsperFrame:
123.80
KilobitsperMacroblock:
0.104
BitsperPixel:
0.41
FrameTypeStatistics:
IFrames:
0.42%
PFrames:
36.84%
BFrames:
36.95%
SFrames:
25.79%
NFrames:
0.00%
（MoreAdvancedCodecsuseBandSframes
FrameQualityStatistics:
DRF=1&2:
5085 60.3%
DRF=3:
3291 39.0%
DRF=4:
60 0.7%
DRF=5:
0 0.0%
DRF=6:
0 0.0%
DRF=7:
0 0.0%
DRF=8:
0 0.0%
DRF=9:
0 0.0%
DRF>9:
0 0.0%
KeyF/DeltaF:
0.43%
KeyDRF<4:
32
KeyDRF=4:
0
KeyDRF>4:
4
AverageKeyDRF:
1.89
MAXDRF:
4
AverageDRF:
2.39
Deviation:
0.52
截图：
2、使用GMC
DRF评测：
FourCC:
XVID
Codec:
XviD0037
Resolution:
[Width:
740Height:
416]
FrameRate:
23.976framespersecond
TheVideohas8472frames[00:
05:
53]
AverageFramequalityisHIGH [AverageDRF/quantizeris2.39]
StandardDeviation:
QualityisHIGH [Std.Deviationis0.52]
ImageResolutionisHIGH
ThefilehasPacketedFrames!
ThereareNOframedrops（NOdropsisbetter
RecomendedResolution:
[800x448] （TargetDRF/quantizer=2.8
Thefilesizecanbesmaller!
PerformanceCaracteristics:
ThisvideoseemstohavetooFEWKeyframes.Maydegradeimagequalityandseeking.
Macroblocksperframe:
1196（PoorPlaybackinSlowComputers,PIII450orbetterrequired
TheWidthisnotmultipleof32.Maydegradeperformanceinsomesystems.
KilobitsperSecond:
2971.29
KilobitsperFrame:
123.80
KilobitsperMacroblock:
0.104
BitsperPixel:
0.41
FrameTypeStatistics:
IFrames:
0.42%
PFrames:
36.84%
BFrames:
36.95%
SFrames:
25.79%
NFrames:
0.00%
（MoreAdvancedCodecsuseBandSframes
FrameQualityStatistics:
DRF=1&2:
5085 60.3%
DRF=3:
3291 39.0%
DRF=4:
60 0.7%
DRF=5:
0 0.0%
DRF=6:
0 0.0%
DRF=7:
0 0.0%
DRF=8:
0 0.0%
DRF=9:
0 0.0%
DRF>9:
0 0.0%
KeyF/DeltaF:
0.43%
KeyDRF<4:
32
KeyDRF=4:
0
KeyDRF>4:
4
AverageKeyDRF:
1.89
MAXDRF:
4
AverageDRF:
2.39
Deviation:
0.52
截图：
2、使用GMC
DRF评测：
FourCC:
XVID
Codec:
XviD0037
Resolution:
[Width:
740Height:
416]
FrameRate:
23.976framespersecond
TheVideohas8472frames[00:
05:
53]
AverageFramequalityisHIGH [AverageDRF/quantizeris2.39]
StandardDeviation:
QualityisHIGH [Std.Deviationis0.52]
ImageResolutionisHIGH
ThefilehasPacketedFrames!
ThereareNOframedrops（NOdropsisbetter
RecomendedResolution:
[800x448] （TargetDRF/quantizer=2.8
Thefilesizecanbesmaller!
PerformanceCaracteristics:
ThisvideoseemstohavetooFEWKeyframes.Maydegradeimagequalityandseeking.
Macroblocksperframe:
1196（PoorPlaybackinSlowComputers,PIII450orbetterrequired
TheWidthisnotmultipleof32.Maydegradeperformanceinsomesystems.
KilobitsperSecond:
2971.29
KilobitsperFrame:
123.80
KilobitsperMacroblock:
0.104
BitsperPixel:
0.41
FrameTypeStatistics:
IFrames:
0.42%
PFrames:
36.84%
BFrames:
36.95%
SFrames:
25.79%
NFrames:
0.00%
（MoreAdvancedCodecsuseBandSframes
FrameQualityStatistics:
DRF=1&2:
5085 60.3%
DRF=3:
3291 39.0%
DRF=4:
60 0.7%
DRF=5:
0 0.0%
DRF=6:
0 0.0%
DRF=7:
0 0.0%
DRF=8:
0 0.0%
DRF=9:
0 0.0%
DRF>9:
0 0.0%
KeyF/DeltaF:
0.43%
KeyDRF<4:
32
KeyDRF=4:
0
KeyDRF>4:
4
AverageKeyDRF:
1.89
MAXDRF:
4
AverageDRF:
2.39
Deviation:
0.52
截图：
3、关闭QP、GMC，仅仅使用B-VOPs进行压制
B-VOPs设置如下：
3；1.2；0.6；
DRF评测：
FourCC:
XVID
Codec:
XviD0037
Resolution:
[Width:
740Height:
416]
FrameRate:
23.976framespersecond
TheVideohas8472frames[00:
05:
53]
AverageFramequalityisHIGH [AverageDRF/quantizeris2.40]
StandardDeviation:
QualityisHIGH [Std.Deviationis0.53]
ImageResolutionisHIGH
ThefilehasPacketedFrames!
ThereareNOframedrops（NOdropsisbetter
RecomendedResolution:
[784x448] （TargetDRF/quantizer=2.8
Thefilesizecanbesmaller!
PerformanceCaracteristics:
ThisvideoseemstohavetooFEWKeyframes.Maydegradeimagequalityandseeking.
Macroblocksperframe:
1196（PoorPlaybackinSlowComputers,PIII450orbetterrequired
TheWidthisnotmultipleof32.Maydegradeperformanceinsomesystems.
KilobitsperSecond:
2971.29
KilobitsperFrame:
123.80
KilobitsperMacroblock:
0.104
BitsperPixel:
0.41
FrameTypeStatistics:
IFrames:
0.42%
PFrames:
62.63%
BFrames:
36.95%
SFrames:
0.00%
NFrames:
0.00%
（MoreAdvancedCodecsuseBandSframes
FrameQualityStatistics:
DRF=1&2:
5027 59.6%
DRF=3:
3344 39.6%
DRF=4:
65 0.8%
DRF=5:
0 0.0%
DRF=6:
0 0.0%
DRF=7:
0 0.0%
DRF=8:
0 0.0%
DRF=9:
0 0.0%
DRF>9:
0 0.0%
KeyF/DeltaF:
0.43%
KeyDRF<4:
32
KeyDRF=4:
0
KeyDRF>4:
4
AverageKeyDRF:
1.89
MAXDRF:
4
AverageDRF:
2.40
Deviation:
0.53
截图：
4、关闭QP、GMC、B-VOPs，仅仅使用IF和PF进行压制
DRF评测：
FourCC:
XVID
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