『漫游』酷论坛>『影音数码技术学习交流』>[请教]新的X264 r736压出 ..
[请教]新的X264 r736压出来的质量很差
zjhray@2008-02-06 10:29
有些静态画面糊掉了,谁知道megui自动升级到r736前是哪个版本吗
zjhray@2008-02-06 10:52
刚才用r709在相同参数下压相同视频,发现qp比r736高了2,但画质确没有达到应有的水准
也就是说r736在谎报qp,请升级过的朋友注意一下
Re: [请教]新的X264 r736压出来的质量很差
咪姆@2008-02-06 11:26
引用
最初由 zjhray 发布
谁知道megui自动升级到r736前是哪个版本吗
709
咪姆@2008-02-06 11:50
刚才打开megui自动升级到736-2了,不知是否修正了楼主说的BUG
zjhray@2008-02-06 12:12
r736-2也是一样,不知是不是作者对qp值的定义改变了,但我感觉还是多少码率干多少事,只不过以qp来衡量画质的要注意一下
咪姆@2008-02-06 12:25
刚才megui本体也自动升级到1044了,希望能修正BUG
zjhray@2008-02-06 12:38
1044对此并无帮助
咪姆@2008-02-06 13:34
那我还是继续用709吧:(
qyqgpower@2008-02-07 14:14
r735 | pengvado | 2008-01-27 17:29:54 +0100 (Sun, 27 Jan 2008) | 2 lines
print average of macroblock QPs instead of frame's nominal QP
--ref在前面的SVN里也已经改了
r721 | pengvado | 2008-01-18 01:42:38 +0100 (Fri, 18 Jan 2008) | 2 lines
change the meaning of --ref: it now selects DPB size (including B-frames), rather than L0 size (which B-frames are added to)
当使用bframe时,新的ref=旧ref值+1
解决了x264压制符合Level4.1的HD源时,ref设置上的困扰
720p --ref最大9
1080p --ref最大4
还有,如果你用的是MeGUI自动升级给的版本,那里面还打了新AQ补丁,默认开启且值的定义和旧AQ补丁不一样,如果原来有对AQ的自定义参数,还是先去掉为好
superkidx@2008-02-07 20:52
MS 没了AQ
Patches applied : none, sorting some mess with 64-bit build for now.
alphaa@2008-02-07 21:07
—_— 我还是等稳定了再升级好了...
qyqgpower@2008-02-07 22:26
引用
最初由 superkidx 发布
MS 没了AQ
Patches applied : none, sorting some mess with 64-bit build for now.
MS是什么
MeGUI自动升级,development模式下,给的肯定是打了新AQ补丁的,MeGUI向来不提供纯粹的svn build
x264 core:58 svn-736M
--aq-strength Amount to adjust QP/lambda per MB [0.5]
0.0: no AQ
1.0: medium AQ
--aq-sensitivity "Center" of AQ curve. [13.0]
0: automatic sensitivity (avoids moving bits between frames)
10: most QPs are raised
20: good general-use sensitivity
30: most QPs are lowered
x264.nl上的是纯svn build,没有AQ补丁,不管是新式还是旧式
superkidx@2008-02-07 22:35
引用
最初由 qyqgpower 发布
MS是什么
MeGUI自动升级,development模式下,给的肯定是打了新AQ补丁的,MeGUI向来不提供纯粹的svn build
x264 core:58 svn-736M
--aq-strength Amount to adjust QP/lambda per MB [0.5]
0.0: no AQ
1.0: medium AQ
--aq-sensitivity "Center" of AQ curve. [13.0]
0: automatic sensitivity (avoids moving bits between frames)
10: most QPs are raised
20: good general-use sensitivity
30: most QPs are lowered
x264.nl上的是纯svn build,没有AQ补丁,不管是新式还是旧式
不用MeGUI
http://mirror05.x264.nl/Cef/
x264 core:58 svn-736C
话说从709-736的改动还真是大啊
vempx@2008-02-07 23:27
现在在用736-2,CQ18模式下压完之后,发现log里的QP很小……我还觉得奇怪呢
不过没有出现楼主说的静态画面压糊了的情况~
请问楼主是什么片子压糊了,能贴个图看看吗?
vempx@2008-02-07 23:51
还有刚发现一个情况,megui的log
- -[Information] Log for job1 (video, Anime_DVDRip_Step1.avs -> Anime_DVDRip_Step1.mp4)
- --[Information] [2008-2-4 14:21:23] Started handling job
- --[Information] [2008-2-4 14:21:23] Preprocessing
- --[NoImage] Job commandline: "D:\MeGUI\tools\x264\x264.exe" --qp 18 --ref 3 --mixed-refs --no-fast-pskip --bframes 3 --b-pyramid --b-rdo --bime --weightb --direct auto --filter 1,1 --subme 7 --trellis 2 --analyse all --8x8dct --me umh --threads 3 --thread-input --sar 1:1 --progress --no-dct-decimate --no-psnr --no-ssim --output "E:\clannad\01\Anime_DVDRip_Step1.mp4" "E:\clannad\01\Anime_DVDRip_Step1.avs"
- --[Information] [2008-2-4 14:21:23] Encoding started
- --[NoImage] Standard output stream:
- --[NoImage] Standard error stream
- ---[NoImage] avis [info]: 864x480 @ 23.98 fps (34790 frames)
- ---[NoImage] x264 [info]: using SAR=1/1
- ---[NoImage] x264 [info]: using cpu capabilities: MMX MMXEXT SSE SSE2 SSE3 3DNow!
- ---[NoImage] mp4 [info]: initial delay 2002 (scale 24000)
- ---[NoImage] x264 [info]: slice I:431 Avg QP:15.79 size: 43263
- ---[NoImage] x264 [info]: slice P:14301 Avg QP:16.96 size: 13493
- ---[NoImage] x264 [info]: slice B:20058 Avg QP:19.00 size: 1273
- ---[NoImage] x264 [info]: mb I I16..4: 23.1% 46.8% 30.1%
- ---[NoImage] x264 [info]: mb P I16..4: 4.1% 9.7% 3.5% P16..4: 38.3% 10.1% 4.1% 0.5% 0.3% skip:29.3%
- ---[NoImage] x264 [info]: mb B I16..4: 0.1% 0.2% 0.1% B16..8: 8.5% 0.5% 0.9% direct: 1.3% skip:88.6%
- ---[NoImage] x264 [info]: 8x8 transform intra:54.6% inter:50.3%
- ---[NoImage] x264 [info]: direct mvs spatial:99.9% temporal:0.1%
- ---[NoImage] x264 [info]: ref P 74.8% 13.4% 11.8%
- ---[NoImage] x264 [info]: ref B 86.3% 13.7%
- ---[NoImage] x264 [info]: kb/s:1307.4
- ---[NoImage] encoded 34790 frames, 7.10 fps, 1307.49 kb/s
请问谁知道为什么是“Standard error stream”呢……?压出来的东西看着是没问题的~
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