『漫游』酷论坛>『影音数码技术学习交流』>[求助]crf模式转换的线 ..
[求助]crf模式转换的线性量化控制问题！急
kingliu46@2009-07-26 00:57
qcomp:线性量化控制，0.0为固定码率，1.0为固定量化值，只能用于二次压缩和基于质量的压缩模式。
rc=crf / crf=22.0 / qcomp=0.60
我转换的时候设置了是1.0，可是为什么转换用完美解码看还是0.60？
还有就是视频缓冲的问题
着是我的视频地址
http://video.qq.com/v1/videopl?v=6Irf1NgZwwR
我的视频参数
D:\12\[HKG][Umineko][04][RV10][BIG5].mp4
General
Complete name : D:\12\[HKG][Umineko][04][RV10][BIG5].mp4
Format : MPEG-4
Format profile : Sony PSP
Codec ID : MSNV
File size : 48.0 MiB
Duration : 23mn 45s
Overall bit rate : 282 Kbps
Encoded date : UTC 2009-07-24 16:30:10
Tagged date : UTC 2009-07-24 16:30:10
Video #1
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.0
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 23mn 44s
Bit rate mode : Variable
Bit rate : 248 Kbps
Maximum bit rate : 1 452 Kbps
Width : 480 pixels
Height : 272 pixels
Display aspect ratio : 16/9
Frame rate mode : Constant
Frame rate : 23.000 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.082
Stream size : 42.1 MiB (88%)
Writing library : x264 core 67 r1165 6841c5e
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x1:0x111 / me=umh / subme=9 / psy_rd=0.0:0.0 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=2 / nr=0 / decimate=0 / mbaff=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=3 / wpredb=1 / keyint=250 / keyint_min=25 / scenecut=40 / rc=crf / crf=22.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00 / cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x1:0x111 / me=umh / subme=9 / psy_rd=0.0:0.0 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=2 / nr=0 / decimate=0 / mbaff=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=3 / wpredb=1 / keyint=250 / keyint_min=25 / scenecut=40 / rc=crf / crf=22.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00
Encoded date : UTC 2009-07-24 16:30:10
Tagged date : UTC 2009-07-24 16:30:13
Audio #2
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : Yes
Format settings, PS : Yes
Codec ID : 40
Duration : 23mn 45s
Bit rate mode : Variable
Bit rate : 32.0 Kbps
Maximum bit rate : 48.9 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Resolution : 16 bits
Stream size : 5.44 MiB (11%)
Encoded date : UTC 2009-07-24 16:30:13
Tagged date : UTC 2009-07-24 16:30:13
我观看这个视频就缓冲的非常快，而却也很清晰！
http://video.qq.com/v1/videopl/vbar?g=03469715904a51eff801&v=6kkxMZkYA3r
着是他的参数
C:\Documents and Settings\Administrator\桌面\未知.MP4
General
Complete name : C:\Documents and Settings\Administrator\桌面\未知.MP4
Format : MPEG-4
Format profile : Sony PSP
Codec ID : MSNV
File size : 56.3 MiB
Duration : 23mn 45s
Overall bit rate : 331 Kbps
Encoded date : UTC 2009-07-22 00:59:21
Tagged date : UTC 2009-07-22 00:59:21
Video #1
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.0
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 23mn 45s
Bit rate mode : Variable
Bit rate : 235 Kbps
Maximum bit rate : 3 613 Kbps
Width : 608 pixels
Height : 336 pixels
Display aspect ratio : 16/9
Frame rate mode : Constant
Frame rate : 23.976 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.048
Stream size : 39.8 MiB (71%)
Writing library : x264 core 59
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x1:0x111 / me=dia / subme=3 / brdo=0 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=3 / nr=0 / decimate=1 / mbaff=0 / bframes=3 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=0 / bime=1 / keyint=250 / keyint_min=25 / scenecut=40(pre) / rc=crf / crf=22.0 / rceq='blurCplx^(1-qComp)' / qcomp=1.00 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30 / aq=2:1.00
Encoded date : UTC 2009-07-22 00:59:21
Tagged date : UTC 2009-07-22 00:59:30
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 : 23mn 45s
Bit rate mode : Variable
Bit rate : 93.4 Kbps
Maximum bit rate : 129 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Resolution : 16 bits
Stream size : 15.9 MiB (28%)
Encoded date : UTC 2009-07-22 00:59:25
Tagged date : UTC 2009-07-22 00:59:30
kingliu46@2009-07-27 01:45
怎么都没有一个人为我解答一下？？？
MeteorRain@2009-07-27 09:40
那我来说一句
楼主的问题太深奥，我不懂
roozhou@2009-07-27 11:54
这是x264 --longhelp里的
--qcomp QP curve compression: 0.0 => CBR, 1.0 => CQP [0.60]
既然你设成1.0，那还用毛crf，直接qp模式就行了
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