作者yummypixza (好吃的披萨)
看板AVEncode
标题[请问] MPC-HC配avisynth再以LAV CUVID解码会色偏
时间Mon Sep 19 17:49:16 2011
现在电脑的组态是这样的:
Intel Pentium Dual Core E5200
Windows Vista SP2 Home Basic
nVIDIA GeForce G100
K-Lite Codec Pack 7.00 Full
Real Alternative 2.0.2 Lite
LAV CUVID decoder 0.13 (Legacy CUDA build)
原本是想要参考01的这篇来做倍频效果
http://www.mobile01.com/topicdetail.php?f=347&t=1576237
可是因为这样做就没办法开DXVA, 後来看到别的地方说可以以raw video的方式先倍频
再丢给DXVA做处理, 所以又去抓了LAVCUVID来试
之後在MPC-HC在外部筛选器指定了ffdshow raw video filter >> LAVCUVID:
http://i.imgur.com/tWJXt.png
播放时也的确确认是先让ffdshow作处理再丢给LAV CUVID:
http://i.imgur.com/0NYle.jpg
可是一旦开了avisynth里的语法之後色彩就会离奇色偏:
http://i.imgur.com/yAxhu.jpg
但是从上面的frame rate跟观感的确能证明avistnth的语法是有作用的
http://i.imgur.com/TeEhS.jpg << 关闭avisynth处理, 色彩正常.
请问这样子是ffdshow, avisynth, 还是LAV CUVID的问题?
※影片讯息补上:
Gerneral
Format : Matroska
File size : 376 MiB
Duration : 26mn 3s
Overall bit rate : 2 016 Kbps
Encoded date : UTC 2009-11-14 19:36:32
Writing application : mkvmerge v2.9.0 ('Moanin'') built on May
22 2009 17:46:31
Writing library : libebml v0.7.7 + libmatroska v0.8.1
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile :
[email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 8 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 26mn 3s
Nominal bit rate : 1 500 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.068
Writing library : x264 core 68 r1183M f21daff
Encoding settings : cabac=1 / ref=8 / deblock=1:1:1 /
analyse=0x3:0x133 / me=esa / subme=8 / psy_rd=0.6:0.0 / mixed_ref=1 /
me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 /
chroma_qp_offset=-2 / threads=3 / nr=0 / decimate=1 / mbaff=0 / bframes=16 /
b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=0 / keyint=250 /
keyint_min=25 / scenecut=40 / rc=2pass / bitrate=1500 / ratetol=1.0 /
qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 /
ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00
Audio #1
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : A_AAC
Duration : 26mn 3s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Audio #2
ID : 3
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : A_AAC
Duration : 26mn 3s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 125.232.138.158
1F：→ yummypixza:补充一下, 截图当时因为怀疑是LAV CUVID硬解的问题所以 09/19 17:51
2F：→ yummypixza:把DXVA关掉, 但实际上开或不开的结果都一样. 09/19 17:51
※ 编辑: yummypixza 来自: 125.232.138.158 (09/19 18:01)
3F：→ web2312:LAV CUVID输出colorspace改成YV12应该能解决色彩问题 09/19 21:18
4F：→ web2312:另可参考本版#1EINlBZH,用SVP来做动态补偿 09/19 21:19
5F：→ web2312:另外原则上LAV CUVID在滤镜串列中应该排在ffdshow之前 09/19 21:20
6F：→ web2312:先进行解码在交给ffdshow raw filter做後处理 09/19 21:20
7F：→ yummypixza:改了输出色域及调换顺序之後问题就解决了, 谢谢!! 09/21 16:14