[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。 .^0@^%Wi oA`'~~! 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。 |GJSAs"L@ 所以,要點樣壓縮到好似前者一樣? wB~Ag$~ ],9%QE 唔改變解像度,只改變碼率,應如何做? aaW(S
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jFfuT9oId 《死神》 Hy~kHBIL General CL oc
Complete name : F:\Video\[jumpcn][BLEACH][320][1280x720].mkv gB,~Y511 Format : Matroska kKwb)i File size : 280 MiB cXu"-/ Duration : 24mn 7s oZTKG' Overall bit rate : 1 621 Kbps r=lhYn Encoded date : UTC 2011-05-03 17:33:29 v1wMXOR Writing application : mkvmerge v2.9.9 ('Tutu') built on Nov 25 2009 21:13:32 R@Ch3l@ Writing library : libebml v0.7.9 + libmatroska v0.8.1 -E_lwK Video #1 <hazrKUn ID : 1 WZ`u"t^2V Format : AVC ^\:"o Format/Info : Advanced Video Codec k_$:?
$ Format profile : [url=mailto:High@L4.0]High@L4.0[/url] ?v?b%hK!; Format settings, CABAC : Yes H;5Fs KIF Format settings, ReFrames : 8 frames 7jP
C{W Muxing mode : Container profile=Unknown@4.0 $/sIdFZi Codec ID : V_MPEG4/ISO/AVC jA9&hbQuL Duration : 23mn 55s (F9U`1~4 Nominal bit rate : 1 500 Kbps w
3oh8NRs_ Width : 1 280 pixels zi M~V' Height : 720 pixels v%8.o%G Display aspect ratio : 16:9 t;g=@o9YA Frame rate : 23.810 fps z2:^Qg Original frame rate : 23.976 fps >p"ytRu^ Resolution : 24 bits l!z)gto Colorimetry : 4:2:0 tB-0wD=PR Scan type : Progressive i#c1ZC Bits/(Pixel*Frame) : 0.068 );X&J:-l+ Writing library : x264 core 98 r1629 2e81ce1 4H@:| 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 A|3'9iL{9 Audio #2 $2lrP]`>j. ID : 2 -DWyKR= j" Format : AAC c8'a<<sj Format/Info : Advanced Audio Codec DL$O274uZ Format version : Version 4 9p|;Hh: Format profile : LC 1nHQ)od Format settings, SBR : No ECq(i( Codec ID : A_AAC 1?k{jt~ Duration : 24mn 7s z u53mZ Channel(s) : 2 channels 3.[ fTrzJ Channel positions : L R j
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Sampling rate : 44.1 KHz -qv*%O@ Resolution : 16 bits vRp#bScc Text #3 gl k-: # ID : 3 PHZ+u@AA6@ Format : ASS `v;9!ReZV Codec ID : S_TEXT/ASS S.G"*'N Codec ID/Info : Advanced Sub Station Alpha s#phs`v Text #4 > J4Tk1//b ID : 4 -B+Pl* Format : ASS \53(D7+ Codec ID : S_TEXT/ASS QYl
Pr&O9 Codec ID/Info : Advanced Sub Station Alpha # !:u
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>m!6 ============================================= HP/f`8 .x6c.Y.S 《GPX》 &d5n_:^
General ~8fy
qE$ Complete name : F:\Video\1992.新世紀GPX.高智能一級方程式Ⅱ-DoubleOne\02_.mkv \PHbJN:BI Format : Matroska 3W&f^* File size : 320 MiB $q}zW% Duration : 26mn 54s +OEheG8 Overall bit rate : 1 663 Kbps x?5D>M/Y Encoded date : UTC 2011-05-16 14:48:07 L$T23*9XY Writing application : mkvmerge v4.3.0 ('Escape from the Island') 编译于 Sep 5 2010 10:30:51 j`
RuK Writing library : libebml v1.0.0 + libmatroska v1.0.0 F ?APDGAN Video #1 }bkQr)us ID : 1 V?_:-!NJ( Format : AVC l:' 0 Format/Info : Advanced Video Codec h`{agWB Format profile : [url=mailto:High@L4.0]High@L4.0[/url] ^a ,Oi% Format settings, CABAC : Yes abs\Ku9 Format settings, ReFrames : 2 frames |<:Owd= Muxing mode : Container profile=Unknown@4.0 H]zi>;D Codec ID : V_MPEG4/ISO/AVC G0e]PMeFl Duration : 26mn 52s 1u9*)w Width : 640 pixels __B`0t Height : 480 pixels H{tG:KH Display aspect ratio : 4:3 \Uz7ar#, Frame rate : 23.976 fps sN"JVJXi Original frame rate : 11.988 fps /"q
wC Resolution : 24 bits D]P_tJI Colorimetry : 4:2:0 7dg2-4 Scan type : Progressive te<lCD6 Writing library : x264 core 38 svn-341 h vC gd^M Audio #2 >^fpQG ID : 2 5*~]=(BE Format : AAC VM.4w.})_E Format/Info : Advanced Audio Codec ygN4%-[XA Format version : Version 4 t9C.|6X Format profile : LC c3L)!]kB Format settings, SBR : Yes "A4
.2 Format settings, PS : No 3?n2/p
7= Codec ID : A_AAC 2kXa Duration : 26mn 54s fV>
12ici Channel(s) : 2 channels [9-&Lq_ g Channel positions : L R @Yu=65h Sampling rate : 44.1 KHz vq?aFX9F Resolution : 16 bits G(Ky7SZ Video delay : -83ms .+.'TY-- Title : Cantonese粵語 hxT{!g Language : Chinese l-mt{2 Audio #3 %}`zq8Q; ID : 3 MkNPC Format : AAC $FJf8u` Format/Info : Advanced Audio Codec Dr_ (u<[ Format version : Version 4 3D2\#6yo Format profile : LC ru>c\X^| Format settings, SBR : Yes .XZq6iF9 Format settings, PS : No NUQ?QQ Codec ID : A_AAC }Dc7'GZ Duration : 26mn 54s $~h\`vF& Channel(s) : 2 channels ge[hAI2I Channel positions : L R h!zev~u1)` Sampling rate : 44.1 KHz %fF0<c^-U Resolution : 16 bits rFJPeK7 Video delay : -83ms VfFXH,j Title : 日語 G+SMH`h Language : Japanese O8mmS! >Ohh)$ ==============================================================
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