[問題]點樣壓縮視頻嘅碼率?
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比較下面兩集動畫。前者1280x720,比後者640x480嘅SIZE重要細。 3vGaT4TDx DGuUI}|) 雖然,後者有兩條音頻,但都係好細,13MB/條。就算將兩條音頻刪除,文件SIZ仍然係好大。 F#37Qv 所以,要點樣壓縮到好似前者一樣? cI4qgV r@@eC[' 唔改變解像度,只改變碼率,應如何做? hK9oe%kU~ u>i+R"hi" H|Fqc=qp 《死神》 /Geks/ General o!_; H}pq Complete name : F:\Video\[jumpcn][BLEACH][320][1280x720].mkv Vwh&^{Eh Format : Matroska qu~"C, File size : 280 MiB BO\`m%8md Duration : 24mn 7s OaCj3d> Overall bit rate : 1 621 Kbps OXCml(>{ Encoded date : UTC 2011-05-03 17:33:29 a!J ow?( Writing application : mkvmerge v2.9.9 ('Tutu') built on Nov 25 2009 21:13:32 kKk |@ Writing library : libebml v0.7.9 + libmatroska v0.8.1 63dtO{:4 Video #1
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=Az[ ID : 1 %IH|zSr)EM Format : AVC Vi-!E Format/Info : Advanced Video Codec >zx50e) Format profile : [url=mailto:High@L4.0]High@L4.0[/url] RO3e Format settings, CABAC : Yes Z$=$oJzB Format settings, ReFrames : 8 frames U@t?jTMBkO Muxing mode : Container profile=Unknown@4.0 iKEKk\j-w Codec ID : V_MPEG4/ISO/AVC d~1"{WPSn Duration : 23mn 55s hw.demD Nominal bit rate : 1 500 Kbps ppo$&W
&z Width : 1 280 pixels Pv$"DEXA2 Height : 720 pixels 7/$Z7J!k Display aspect ratio : 16:9 ,xM*hN3A Frame rate : 23.810 fps +z?f,`.* Original frame rate : 23.976 fps Ty`=U>K| Resolution : 24 bits 27i<6PAC[A Colorimetry : 4:2:0 {.8)gVBmA Scan type : Progressive ~5qZs"ks Bits/(Pixel*Frame) : 0.068 E6\~/=X=% Writing library : x264 core 98 r1629 2e81ce1 FrM~6A_ Encoding settings : cabac=1 / ref=8 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=6 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / weightp=0 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=1500 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=3486 / vbv_bufsize=3487 / ip_ratio=1.40 / aq=1:0.50 / nal_hrd=none *1]k&#s Audio #2 JWjp<{Q;1 ID : 2 p"
W0$t. Format : AAC
_;RD-kv Format/Info : Advanced Audio Codec -.3k
vL Format version : Version 4 | Dpfh Format profile : LC 03\8e?$ Format settings, SBR : No ,colGth54 Codec ID : A_AAC ~g|0uO}. Duration : 24mn 7s L. ?dI82c Channel(s) : 2 channels ~a,' Channel positions : L R Fd.d( Sampling rate : 44.1 KHz \5c -L_ Resolution : 16 bits tdK^X1 Text #3 eC:Q)%$%l ID : 3 ;AA7wK 4 Format : ASS #mxfU>vQ: Codec ID : S_TEXT/ASS j@\/]oL^We Codec ID/Info : Advanced Sub Station Alpha 'UCx^- Text #4 ;XuEMq,Di ID : 4 q)y8Bv| Format : ASS SytDo (_=W Codec ID : S_TEXT/ASS w:(7
fu= Codec ID/Info : Advanced Sub Station Alpha #$T"QL@ qn
V9TeU) ============================================= 3`8xh9O ;P#*R3
《GPX》 \`# 0,pLr General `;GGuJb \ Complete name : F:\Video\1992.新世紀GPX.高智能一級方程式Ⅱ-DoubleOne\02_.mkv ()JDjzQT Format : Matroska .[s82c]]6 File size : 320 MiB nit7|T@^ Duration : 26mn 54s OEi9
)I Overall bit rate : 1 663 Kbps e!'u{>u Encoded date : UTC 2011-05-16 14:48:07 ,1+_k ="Z Writing application : mkvmerge v4.3.0 ('Escape from the Island') 编译于 Sep 5 2010 10:30:51 "$YLU}S9 Writing library : libebml v1.0.0 + libmatroska v1.0.0 =i %w_e Video #1 nL~
b ID : 1 {-qTU6 Format : AVC eR;0pWVl Format/Info : Advanced Video Codec 6V
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g Format profile : [url=mailto:High@L4.0]High@L4.0[/url] ]`9K|v Format settings, CABAC : Yes Xh!Pg)|E Format settings, ReFrames : 2 frames "b7C0NE Muxing mode : Container profile=Unknown@4.0 l_EI7mJ Codec ID : V_MPEG4/ISO/AVC _3>zi.J/ Duration : 26mn 52s &$im^0`r_ Width : 640 pixels ( "z;Q?( Height : 480 pixels j)*nE./3 Display aspect ratio : 4:3 T+!kRigN~P Frame rate : 23.976 fps wB"Gw` D Original frame rate : 11.988 fps =1Jo-!{{ Resolution : 24 bits l]&)an Colorimetry : 4:2:0 [)u{ - Scan type : Progressive NDGBv
b Writing library : x264 core 38 svn-341 Ba~Iy2\x Audio #2 r U5'hK
ID : 2 #IDCCD^1= Format : AAC UlytxWkUX Format/Info : Advanced Audio Codec h (2k;M^s Format version : Version 4 < Ifnf6~ Format profile : LC nsk
6a Format settings, SBR : Yes iq-o$6Pg Format settings, PS : No
:LG%8Z{R Codec ID : A_AAC DcHMiiVM Duration : 26mn 54s _Oq\YQ
b v Channel(s) : 2 channels Df^S77&c! Channel positions : L R wYG0*!Vj Sampling rate : 44.1 KHz 3}Qh`+Yj] Resolution : 16 bits k6S<46}h| Video delay : -83ms l[ k$O$jo Title : Cantonese粵語 v^'~-^s
Language : Chinese fO nvC* Audio #3 w.H+$=aK ID : 3 l-EQh*!j Format : AAC =ndKG5 Format/Info : Advanced Audio Codec C"<@EMU9 Format version : Version 4 SGm?"esEt Format profile : LC t;3.; Format settings, SBR : Yes
jfamuu 7 Format settings, PS : No
V;jz0B Codec ID : A_AAC 7/L7L5h< Duration : 26mn 54s Xg,BK0O Channel(s) : 2 channels =@o} Channel positions : L R G]CY3xw98 Sampling rate : 44.1 KHz w3D_ c~ Resolution : 16 bits ^
cm^JyS) Video delay : -83ms vKf=t&gqr Title : 日語 _(foJRr Language : Japanese X Rn=;gK%J Lw`\J|%p ==============================================================
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