[問題]點樣壓縮視頻嘅碼率?
0
比較下面兩集動畫。前者1280x720,比後者640x480嘅SIZE重要細。 P]<4R:yb 3RiWZN 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。 _ ?TN; 所以,要點樣壓縮到好似前者一樣? .0p0_f= >lmi@UN|k 唔改變解像度,只改變碼率,應如何做? cec9l65d t![7uU.W Nw:GCf-L 《死神》 rJd,Rd
t. General =31"fS@ Complete name : F:\Video\[jumpcn][BLEACH][320][1280x720].mkv cy*?&~; Format : Matroska i}b${no File size : 280 MiB sD<a+Lw}x Duration : 24mn 7s h,QKd>4:CF Overall bit rate : 1 621 Kbps @<<<C?CTv Encoded date : UTC 2011-05-03 17:33:29 qsL)}sC^8 Writing application : mkvmerge v2.9.9 ('Tutu') built on Nov 25 2009 21:13:32 4p e'06: Writing library : libebml v0.7.9 + libmatroska v0.8.1 yZd +^QN Video #1 yh^!'!I6u[ ID : 1 BW-`t-,E; Format : AVC U
-Y03 Format/Info : Advanced Video Codec M=.:,wRm Format profile : [url=mailto:High@L4.0]High@L4.0[/url] m[i+knYX Format settings, CABAC : Yes QFfK0X8cC Format settings, ReFrames : 8 frames Yv
hA_v Muxing mode : Container profile=Unknown@4.0 Fd#?\r. Codec ID : V_MPEG4/ISO/AVC |}23>l7 Duration : 23mn 55s _,q) hOI Nominal bit rate : 1 500 Kbps pqUCqo!m\ Width : 1 280 pixels ?MXejEC Height : 720 pixels L93l0eEt Display aspect ratio : 16:9 Ny_lrfh) [ Frame rate : 23.810 fps '[J<=2& Original frame rate : 23.976 fps 0 - ><q Resolution : 24 bits |4
v0:ETb$ Colorimetry : 4:2:0 |\_^B Scan type : Progressive x2@U.r"zo Bits/(Pixel*Frame) : 0.068 6)z?f4, Writing library : x264 core 98 r1629 2e81ce1 np%\&CVhN 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 J%V-Q>L Audio #2 tS|9fBdCs ID : 2 !(qsD+ Format : AAC u4.ngjJ Format/Info : Advanced Audio Codec $|]" W=h Format version : Version 4 Ad:TY
pLD Format profile : LC
:,WtR Format settings, SBR : No 994`ua+ Codec ID : A_AAC `
L> Duration : 24mn 7s iS&l8@2a Channel(s) : 2 channels Z-8Yd6 4 Channel positions : L R BJgW,huLy Sampling rate : 44.1 KHz W3D c r@Dy Resolution : 16 bits Y7#-Fra0W Text #3 |fxA|/s[< ID : 3 GM<BO8Y. Format : ASS `(v='$6} Codec ID : S_TEXT/ASS lZyG)0t,g Codec ID/Info : Advanced Sub Station Alpha BYO"u6 Text #4 1BAgtd$3 ID : 4 &FH2fMLQ Format : ASS }Ow>dV? Codec ID : S_TEXT/ASS {GKy'/[ Codec ID/Info : Advanced Sub Station Alpha ME;n^y\8 <'fdkW ============================================= N=5)fe%{4 /n5F(5< 《GPX》 \A#1y\ok General {%VV\qaC Complete name : F:\Video\1992.新世紀GPX.高智能一級方程式Ⅱ-DoubleOne\02_.mkv ZunCKc Format : Matroska ({-GOw46 File size : 320 MiB -6tgsfEr Duration : 26mn 54s Xg=x7\V Overall bit rate : 1 663 Kbps _*IPk Encoded date : UTC 2011-05-16 14:48:07 za:a)U^n Writing application : mkvmerge v4.3.0 ('Escape from the Island') 编译于 Sep 5 2010 10:30:51 `+zWu55; Writing library : libebml v1.0.0 + libmatroska v1.0.0 oEx\j+}@n Video #1 a@@M+9Q ID : 1 \S*$UE]uG
Format : AVC xXY.AoO6 Format/Info : Advanced Video Codec Q.9qImgN Format profile : [url=mailto:High@L4.0]High@L4.0[/url] `C_jP|[e Format settings, CABAC : Yes Fi.aC;sx Format settings, ReFrames : 2 frames 4\pWB90V Muxing mode : Container profile=Unknown@4.0 R
g?1-|Tj Codec ID : V_MPEG4/ISO/AVC Nt:8ogk/ Duration : 26mn 52s 4'Xgk8) Width : 640 pixels RGD]8mw Height : 480 pixels V5D2\n3A Display aspect ratio : 4:3 V%CUMH =U Frame rate : 23.976 fps la$%H<,7 Original frame rate : 11.988 fps ?Qqd "=k4 Resolution : 24 bits ~V)?>)T Colorimetry : 4:2:0 ] c}91 Scan type : Progressive jU=<r Writing library : x264 core 38 svn-341 {SG>'KXZ Audio #2 +&ZX$ ID : 2 Omag)U)IPh Format : AAC Di=9mHC Format/Info : Advanced Audio Codec |G=[5e^s[ Format version : Version 4 ^uaFg`S Format profile : LC _zC (J Format settings, SBR : Yes LxJ6M/". Format settings, PS : No tfiqr|z Codec ID : A_AAC B}*V%}:) Duration : 26mn 54s `?o=*OS7Y Channel(s) : 2 channels 9Z!lmfnJ Channel positions : L R a&/HSf_G Sampling rate : 44.1 KHz ,5-Zb3\ Resolution : 16 bits BpT"~4oV5 Video delay : -83ms b>q6:=(( Title : Cantonese粵語 Uu2N9.5 Language : Chinese :|XCnK0 Audio #3 N+
>'J23d! ID : 3 &X w`T9< Format : AAC Hptq,~_t Format/Info : Advanced Audio Codec wr@GN8e` Format version : Version 4 T8q[7Zn Format profile : LC 5!:._TcO Format settings, SBR : Yes ??TdrTS Format settings, PS : No cHn;}l!I Codec ID : A_AAC xT+
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Duration : 26mn 54s ;qVG
\wQq Channel(s) : 2 channels DB Xm Channel positions : L R )_pt*xo Sampling rate : 44.1 KHz ftW{C1,U7 Resolution : 16 bits %QE5<2k Video delay : -83ms ! [q}BU4 Title : 日語 F(G<*lA Language : Japanese yr{5Rp05= 8v$g ==============================================================
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