XviD制作教程(10.22update)

制作所需软件:
DVD2AVIdg/MPEG2DEC3dg Version 1.0.0
AviSynth 2.5.2
XviD MPEG4 codec
VirtualDubMod 1.5.4.1
AviSynth_250 plugins:
Decomb5.0.0
Gordian Knot 0.28

1.用DVD2AVI分离mpeg2文件的音频流,确定视频流的规格信息.
首先选择Video - Field Operation，设置为None。按F5开始预览。让它运行一会儿，观察status窗口。这里有两个你需要记住的东西：第一个是Aspect Ratio，要么是16:9要么是4:3，另一个是frame type。

最后根据情况保存DVD2AVI工程文件
①视源全部为Progressive的或者Video Type是FILM并打开了Forced Film
File->Save Project [F4]
②视源是Interlaced的或者部分Interlaced部分Progressive
File->Save Project (1.76)

2.编写Avisynth script生成avs档
下是一个Avisynth script模板,带"#"内容以不起作用,根据使用情况去掉或者加上
根据上述①②分两种情况:
①的情况(YV12制程)
mpeg2_P.avs:

复制代码

LoadPlugin("MPEG2Dec3dg.dll")
mpeg2source("xxx.d2v")
crop(6,4,-6,-4)
LanczosResize(640,480)

# DENOISING: choose one combination (or none)

#LoadPlugin("UnDot.dll")
#UnDot()
#UnDot is a simple median filter for removing dots, that is stray orphan pixels and
#mosquito noise. It basicly just clips each pixel value to stay within min and max
#of its eight surrounding neigbors.

#LoadPlugin("Convolution3d.dll")
#Convolution3d("movielq")
#Convolution3d (preset="movieHQ") // Movie Hi Quality (good DVD source)
#Convolution3d (preset="movieLQ") // Movie Low Quality (noisy DVD source)
#Convolution3d (preset="animeHQ") // Anime Hi Quality (good DVD source)
#Convolution3d (preset="animeLQ") // Anime Low Quality (noisy DVD source)
#Convolution3d (preset="animeBQ") // Anime Bad Quality (???)
#Convolution3d (preset="vhsBQ") // VHS capture Bad Quality (???)

②的情况(YUY2制程)
mpeg2_I.avs:

复制代码

LoadPlugin("LoadPluginEx.dll")
LoadPlugin("MPEG2DEC2.dll")
mpeg2source("xxx.d2v")

#首先确定你DVD2AVI时是把Field Operation设为None,否则不要使用以下内容
LoadPlugin("Decomb500.dll")

#FieldDeinterlace()
#影片做Deinterlace (Frame Rate:25.000 fps, Video Type:PAL,Frame Type:Interlaced)
#预览画面，仔细观察。如果你没有看到水平黑线那么实际上图像是progressive的,则影片不用做Deinterlace

#Telecide(order=1,guide=1)
#Decimate(cycle=5)
#影片做IVTC (Frame Rate:29.970 fps, Frame Type:Interlace, Field Order:Top Field First, NTSC 3:2 pulldown)
#若影片的Field Order是Bottom Field First,则设置order=0;不是3:2 pulldown的去掉",guide=1"
#判断Field Order和3:2 pulldown的方法请看order_guide.avs

crop(8,66,-6,-60)
#切边：最后兩个数字一定要为负数，所以請手動加上"-"
#按照GK的Resolution里面的数值填上Crop(left,top,-width,-height)

LanczosResize(640,352)
#放大縮小,按照GK的Resolution里面的Width x Height数值填上LanczosResize(width,height)

#LumaFilter(+10,1.1)
#亮度滤镜
#变暗:LumaFilter(-10,0.9)
#变亮:LumaFilter(+10,1.1)
#LumaFilter(clip, integer "lumoff", float "lumgain")
#the transfomation is : yy = (y*lumgain)+lumoff
#lumoff : Luminosity offset. default = -2 (for iago ^^)
#lumgain : Luminosity gain. default = 1

# DENOISING: choose one combination (or none)
#LoadPlugin("UnDot.dll")
#UnDot()

#LoadPlugin("FluxSmooth-2.5.dll")
# little noise
#FluxSmooth(5,7)
# medium noise
#FluxSmooth(7,7)
# heavy noise
#FluxSmooth(10,15)

#调用字幕
#LoadPlugin("VSFilter.dll")
#TextSub("xxx.ssa")

order_guide.avs:

复制代码

LoadPlugin("LoadPluginEx.dll")
LoadPlugin("MPEG2DEC2.dll")
LoadPlugin("Decomb500.dll")
mpeg2source("xxx.d2v")
AssumeTFF().SeparateFields()
#Telecide(order=1,guide=1,post=0,show=true)

# 1.Set the Field Order:

#Add a script line to separate the fields using top field first, as follows:
#AssumeTFF().SeparateFields()

#Now serve the script into VirtualDub and find an area with motion. Single step forward
#through the motion. Note whether the motion progresses always forward as it should, or
#whether it jumps back and forth as it proceeds. For example, if the field order is wrong,
#an object moving steadily from left to right would move right, then jump back left a
#little, then move right again, etc. If the field order is correct, it moves steadily to
#the right.

#If the motion is correct with AssumeTFF().SeparateFields(), then your field order is top
#field first and you must set order=1. If the motion is incorrect, then your field order
#is bottom field first and you must set order=0

# 2.Set up Pattern Guidance:

#Second, you can serve the following script into VirtualDub and see what Telecide() reports
#about it (remember to use the correct field order as you determined it above).

#AviSource("your_clip.avi")
#Telecide(order=1,guide=1,post=0,show=true)

#Serve this into VirtualDub and step through several typical sections of your clip. If
#Telecide() reports "in-pattern", or "in-pattern*", then it is locking onto 3:2 pulldown.
#If it reports "out-of-pattern" or continuously jumps in and out of pattern lock, then it
#is not locking onto a consistent 3:2 pattern.

#If you determine that your clip has a lot of 3:2 content, then you should go ahead and set
#guide=1. If there is not a lot of 3:2 content, or you have any doubts about the nature of
#the clip, then you should set guide=0.

以上avs需要用VirtualDubMoD打开预览并根据情况修改相关内容,直到预览的画面没有问题再进行下一步的真正编码.

3.用VirtualDubMoD打开最终的avs档,进行MPEG-4编码,生成Avi档
Video-->Fast recompress
xvid 1psss setting:
Global选项里
Quantization type-->H.263
VHQ mode--> 0-Off
Maximum / Minimum I-frame interval-->240 / 1
将最大关键帧设为每秒帧数的10倍(例如：240、250、300)
Use Chroma motion
Maximum B-frames-->2
B-frames quantizer ratio(%)-->100
B-frames quantizer offset-->1
B-frames threshold-->0
DX50 B-VOP compatibility

Two Pass里：
在1st pass stats指定一个目录来保存video.stats
File->save as...(F7)开始做1pass

完成后在Gordian Knot中的NanDUB Files中，OPEN打开XVID 1st pass建立的video.stats文件。
回到GK的Bitrate界面上，进行码流计算和決定要做成多少CD版本.通过调整Total File Size使Video Size/1st Pass Size的比值在30%-40%左右就可以达到质量和大小之间的平衡了.
拷贝在Video Size 這一栏里的那个xxxxxx KB的值，这个在VirtualDubMoD做2pass-int时会用到

2 Pass - 2nd pass int setting:
在Desired size(Kbtyes)填入之前在GK拷贝的那个值,即刚才在GK计算记下Video Size的大小(KB那个数值)
Advanced option...
B-frames quantizer offset-->200
Two Pass：
确定1st pass stats为之前做1pass时生成的video.stats文件
Bitrate payback delay (frames)->240
应设为每秒帧数的10倍(例如：240、250、300)

在Debug里：
把Chroma Optimizer和Use trellis R-D quantisation(该选择只对H.263有效)都选上

File->save as...(F7)开始做2pass

4.最后用VDM或NanDub合成音频流.

附上xvid-dev-api-4-2003-10-05的推荐设置
2-pass,chroma motion,h263,vhq4,BVOPs=2,ratio=1,offset=2,Trellis quantisation