[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。 Q'7o_[o/ nC_<pq^tr 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。 SXwgn > 所以,要點樣壓縮到好似前者一樣? [\ @!~F{ 8W[QV 唔改變解像度,只改變碼率,應如何做? e@L+z |jEKUTv,G DS=kSkW^&5 《死神》
nUs) General (x>5 Complete name : F:\Video\[jumpcn][BLEACH][320][1280x720].mkv 3543[W#a Format : Matroska _@F4s File size : 280 MiB JBeC\ \QX Duration : 24mn 7s BXZ( %tnY Overall bit rate : 1 621 Kbps D<5gdIw Encoded date : UTC 2011-05-03 17:33:29
Writing application : mkvmerge v2.9.9 ('Tutu') built on Nov 25 2009 21:13:32 v~L} : Writing library : libebml v0.7.9 + libmatroska v0.8.1 m&Ms[X Video #1 U5dJ=G ID : 1 yE{l
Xp; Format : AVC 'gI58#v Format/Info : Advanced Video Codec rZKv:x}{6 Format profile : [url=mailto:High@L4.0]High@L4.0[/url] NO`LSF Format settings, CABAC : Yes #U"\v7C{n Format settings, ReFrames : 8 frames 44kY[jhf Muxing mode : Container profile=Unknown@4.0 feQ_dA q Codec ID : V_MPEG4/ISO/AVC <!5N=- Duration : 23mn 55s #y-OkGS
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Nominal bit rate : 1 500 Kbps :2 QA
# Width : 1 280 pixels gS4K](KH | Height : 720 pixels :}+U?8/"7 Display aspect ratio : 16:9 j9y,UT Frame rate : 23.810 fps wW6?.}2zU Original frame rate : 23.976 fps !xj >~7 Resolution : 24 bits Q]{DhDz?+ Colorimetry : 4:2:0 h&h]z[r R Scan type : Progressive s
~(qO|d Bits/(Pixel*Frame) : 0.068 [9[tn- Writing library : x264 core 98 r1629 2e81ce1 V=3NIw18 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 K~x G+Kh Audio #2 M}(4>W ID : 2 @#*B|lHE Format : AAC ]r'b(R; S Format/Info : Advanced Audio Codec <2}"Y(zwKl Format version : Version 4 _q3SR[k+` Format profile : LC XL EA|# Format settings, SBR : No UrN$nhH Codec ID : A_AAC qe`W~a9x Duration : 24mn 7s 0:v7X)St Channel(s) : 2 channels `S;pn+5 Channel positions : L R .zBSjh_=H Sampling rate : 44.1 KHz SDA
+XnmH Resolution : 16 bits h,TDNR<1L Text #3 m4>v S ID : 3 _$MoMg{uJH Format : ASS 8QFY:.h& Codec ID : S_TEXT/ASS JOenVepQ, Codec ID/Info : Advanced Sub Station Alpha 2=["jP!B Text #4 B:^5W{ ID : 4 |\~cjPX( Format : ASS gbXzD`WQ Codec ID : S_TEXT/ASS ?y]3kU Codec ID/Info : Advanced Sub Station Alpha w y:. j><.tA~i ============================================= @>X."QbE Zt[
PkBi 《GPX》 VdVca1Z General pO
nZ7( Complete name : F:\Video\1992.新世紀GPX.高智能一級方程式Ⅱ-DoubleOne\02_.mkv +es.V
/ Format : Matroska 0sV;TQt+f File size : 320 MiB sx`C<c~u Duration : 26mn 54s pBK[j([ Overall bit rate : 1 663 Kbps L_ 8C=MS Encoded date : UTC 2011-05-16 14:48:07 ApU5,R0 Writing application : mkvmerge v4.3.0 ('Escape from the Island') 编译于 Sep 5 2010 10:30:51 h %MPppCEa Writing library : libebml v1.0.0 + libmatroska v1.0.0 |Vd)7/LN Video #1 %S$P+B? ID : 1 /SlCcozFL~ Format : AVC `lcpUWn Format/Info : Advanced Video Codec ~yB[}BPf Format profile : [url=mailto:High@L4.0]High@L4.0[/url] -PEpy3dMY Format settings, CABAC : Yes z~z.J] Format settings, ReFrames : 2 frames h7gH4L!'u Muxing mode : Container profile=Unknown@4.0 47ir QK
* Codec ID : V_MPEG4/ISO/AVC <aL$d7 Duration : 26mn 52s O2 3f\pm& Width : 640 pixels W?XvVPB Height : 480 pixels q;>' jHh Display aspect ratio : 4:3 Bz/NFNi[p Frame rate : 23.976 fps `(*5yX C Original frame rate : 11.988 fps olK%TM[Y Resolution : 24 bits }1X,~y] Colorimetry : 4:2:0 X1tAV>k5'L Scan type : Progressive //V?rs Writing library : x264 core 38 svn-341 p
m3? Audio #2 BuK 82 ID : 2 i>b^n+74> Format : AAC :tzCuK?e Format/Info : Advanced Audio Codec ~3/>;[! Format version : Version 4 9-}&znLZe Format profile : LC -!wm]kx
f Format settings, SBR : Yes 0o`0Td Format settings, PS : No )9L1WOGi Codec ID : A_AAC - Npl x Duration : 26mn 54s I-fs*yzj;8 Channel(s) : 2 channels ,+zLFQC0@ Channel positions : L R 0r:8ni%cL Sampling rate : 44.1 KHz h'IBVI!P Resolution : 16 bits l E
Qn2+ Video delay : -83ms N
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]*E Title : Cantonese粵語 QJOP *<O Language : Chinese "F)7!e Audio #3 F?5kl/(" ID : 3 b$.N8W% Format : AAC K _O3Dc
Q Format/Info : Advanced Audio Codec nCXIWLw Format version : Version 4 2 B5kpmH: Format profile : LC N \A)P Format settings, SBR : Yes 5vg@zH\z Format settings, PS : No {_ewc/~ Codec ID : A_AAC ) ,*&rd! Duration : 26mn 54s :^J(%zy Channel(s) : 2 channels (w"zI! Channel positions : L R GD~3RnGQ{ Sampling rate : 44.1 KHz D[;6xJ Resolution : 16 bits +>c)5Jih Video delay : -83ms pEhWgCL Title : 日語 v2rX uo
Language : Japanese s+Ln>c'|o -D{~7& ==============================================================
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