视频来自：优酷
LoadPlugin("D:\AviSynth\plugins\dgmpgdec\DGDecode.dll")
Load_Stdcall_Plugin("D:\AviSynth\plugins\yadif\yadif.dll")
LoadPlugin("D:\AviSynth\plugins\blendbob\BlendBob.dll")
LoadPlugin("D:\AviSynth\plugins\undot\UnDot.dll")
V=Mpeg2Source("独自去偷欢.d2v").ConvertToYV12().Yadif(mode=1,order=1).Blendbob(badframes=0,forcematch=1).Crop(0,0,-10,0).LanczosResize(960,720).Undot()
A=DirectShowSource("独自去偷欢_Audio1.mp2")
AudioDub(V,A)

FFmpeg也是调用的X264
F:\Videos\独自去偷欢.mov
General
Complete name : F:\Videos\独自去偷欢.mov
Format : MPEG-4
Format profile : QuickTime
Codec ID : qt
File size : 92.7 MiB
Duration : 4mn 6s
Overall bit rate : 3 157 K
bp
s
Writing application : Lavf55.44.100
Video #1
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 4mn 6s
Bit rate mode : Variable
Bit rate : 2 957 Kbps
Nominal bit rate : 3 000 Kbps
Width : 960 pixels
Height : 720 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 29.970 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.143
Stream size : 86.8 MiB (94%)
Writing library : x264 core 142 r2431 ac76440
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=3 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=abr / mbtree=1 / bitrate=3000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Audio #2
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : 40
Duration : 4mn 6s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Resolution : 16 bits
Stream size : 5.63 MiB (6%)

X264+NeroAAC
F:\Videos\独自去偷欢.mp4
General
Complete name : F:\Videos\独自去偷欢.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 97.4 MiB
Duration : 4mn 6s
Overall bit rate : 3 318 Kbps
Encoded date : UTC 2014-06-04 15:32:17
Tagged date : UTC 2014-06-04 15:32:17
Video #201
ID : 201
Format : AVC
Format/Info : Advanced Video Codec
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 4mn 6s
Bit rate mode : Variable
Bit rate : 2 996 Kbps
Maximum bit rate : 4 405 Kbps
Width : 960 pixels
Height : 720 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 29.970 fps
Bits/(Pixel*Frame) : 0.145
Stream size : 87.9 MiB (90%)
Encoded date : UTC 2014-06-04 15:32:17
Tagged date : UTC 2014-06-04 15:32:19
Audio #101
ID : 101
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : 40
Duration : 4mn 6s
Bit rate mode : Variable
Bit rate : 319 Kbps
Maximum bit rate : 348 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Resolution : 16 bits
Stream size : 9.37 MiB (10%)
Encoded date : UTC 2014-06-04 15:29:37
Tagged date : UTC 2014-06-04 15:32:19

我发现用FFmpeg CPU使用率100%，MeGUI只有60%多。FFmpeg似乎要快很多，压出来的质量也不比MeGUI差。

input 是亮点。