[请教]高码率xvid转低码率H.264是否没有意义？

引用

Format : AVI
Format/Info : Audio Video Interleave
File size : 79.8 MiB
Duration : 2mn 40s
Overal bit rate : 4174 Kbps
Writing library : EO Video 1350/release
Video
Format : MPEG-4 Visual
Format profile : Streaming Video@L1
Format settings, BVOP : Yes
Format settings, QPel : No
Format settings, GMC : No warpoints
Format settings, Matrix : Default
Muxing mode : Packet Bitstream
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 1mn 20s
Bit rate : 6938 Kbps
Width : 640 pixels
Height : 480 pixels
Display aspect ratio : 4/3
Frame rate : 29.970 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.754
Stream size : 66.2 MiB
Writing library : XviD 1.1.0 (UTC 2005-11-22)

引用

Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 8 frames
Codec ID : avc1
Duration : 1mn 20s
Bit rate mode : Variable
Bit rate : 451 Kbps
Nominal bit rate : 448 Kbps
Maximum bit rate : 1347 Kbps
Width : 640 pixels
Height : 480 pixels
Display aspect ratio : 4/3
Frame rate mode : Constant
Frame rate : 29.970 fps
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.049
Stream size : 4.30 MiB
Writing library : x264 core 60
Encoding settings : cabac=1 / ref=8 / deblock=1:3:3 / analyse=0x3:0x133 / me=umh / subme=7 / brdo=1 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=3 / nr=0 / decimate=1 / mbaff=0 / bframes=16 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=1 / wpredb=1 / bime=1 / keyint=300 / keyint_min=25 / scenecut=40(pre) / rc=2pass / bitrate=448 / ratetol=1.0 / rceq='blurCplx^(1-qComp)' / qcomp=1.00 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=2:1.00
Encoded date : UTC 2008-06-25 03:41:54
Tagged date : UTC 2008-06-25 03:41:54

引用

最初由 zjhray 发布
50%的码率就可以了，基本上可以保持原有画质，你这451k是太高估x264的能力了

引用

Video #201
Format : MPEG-4 Visual
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warpoints
Format settings, Matrix : Default
Codec ID : 20
Duration : 4mn 4s
Bit rate mode : Variable
Bit rate : 1996 Kbps
Maximum bit rate : 4298 Kbps
Width : 640 pixels
Height : 480 pixels
Display aspect ratio : 4/3
Frame rate mode : Constant
Frame rate : 24.000 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.271
Stream size : 58.2 MiB
Writing library : Lavc51.14.0
Encoded date : UTC 2008-06-16 10:45:45
Tagged date : UTC 2008-06-16 10:45:49

引用

最初由 观铃の使魔 发布

砍帧？...小白求教程 ><