[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。 #\%GrtM x9-K}s]% 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。 2=F_<Jh|+ 所以,要點樣壓縮到好似前者一樣? N;r,B \ E[0KvN;O 唔改變解像度,只改變碼率,應如何做? 4zJ9bF4 V
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tb6<. 《死神》 ``aoLQc` General O!Mm~@MoA Complete name : F:\Video\[jumpcn][BLEACH][320][1280x720].mkv YwB5Zqr Format : Matroska K8284A8v File size : 280 MiB 2z )h,<D Duration : 24mn 7s &(Xp_3PO Overall bit rate : 1 621 Kbps tH>%`: Encoded date : UTC 2011-05-03 17:33:29 ^9cqT2:t Writing application : mkvmerge v2.9.9 ('Tutu') built on Nov 25 2009 21:13:32 4~Lw:o1a Writing library : libebml v0.7.9 + libmatroska v0.8.1 |mMW"(~ Video #1 Kq-y1h]7H ID : 1 Y`lC4*g Format : AVC 4I {|M,+ Format/Info : Advanced Video Codec 6@Eip[e Format profile : [url=mailto:High@L4.0]High@L4.0[/url] xo^_;(; Format settings, CABAC : Yes
n-H0cm Format settings, ReFrames : 8 frames Jc{zi^)(EN Muxing mode : Container profile=Unknown@4.0 .0\Wu+ Codec ID : V_MPEG4/ISO/AVC :hxfd b- Duration : 23mn 55s IGv>0LOd@ Nominal bit rate : 1 500 Kbps (CuaBHR
Width : 1 280 pixels dzbzZ@y Height : 720 pixels Y*J`Wf(w Display aspect ratio : 16:9 -*?a*q/#nQ Frame rate : 23.810 fps = @ph Original frame rate : 23.976 fps =>S5}6 Resolution : 24 bits z
KJ6j ]m Colorimetry : 4:2:0 m$[\(Z(/ Scan type : Progressive r,yhc = Bits/(Pixel*Frame) : 0.068 ?CmW{9O Writing library : x264 core 98 r1629 2e81ce1 ~>#=$#V Encoding settings : cabac=1 / ref=8 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=6 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / weightp=0 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=1500 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=3486 / vbv_bufsize=3487 / ip_ratio=1.40 / aq=1:0.50 / nal_hrd=none 9LCV"xgX Audio #2 K mL
PWj ID : 2 C/
;f)k< Format : AAC c9f~^}jNb Format/Info : Advanced Audio Codec &XgB-}^: Format version : Version 4 +s_@964 Format profile : LC MdEZ839J Format settings, SBR : No &t%ICz&3 Codec ID : A_AAC E!3W_:Bs Duration : 24mn 7s lR;<6 Channel(s) : 2 channels h r t\ Channel positions : L R [ &R-YQ@ Sampling rate : 44.1 KHz `2S%l,>)# Resolution : 16 bits pm<<!`w" Text #3 !|Vjv}UO ID : 3 6RzTSb Format : ASS 1Pn!{ bU3@ Codec ID : S_TEXT/ASS (Rs<'1+> Codec ID/Info : Advanced Sub Station Alpha B.{0,bW?
Text #4 VWbgusxJ ID : 4 80:na7$)# Format : ASS CEI#x~Oq Codec ID : S_TEXT/ASS uQpV1o5iA Codec ID/Info : Advanced Sub Station Alpha k]I<% 9)H~I/
9Y ============================================= sowkxw.^Q J*$ !^\s 《GPX》 ~EX/IIa{ General -+O8v;aC' Complete name : F:\Video\1992.新世紀GPX.高智能一級方程式Ⅱ-DoubleOne\02_.mkv Udd|. J Rd Format : Matroska ,4EE9
?J File size : 320 MiB .5_w^4`b Duration : 26mn 54s 9>[$;> Overall bit rate : 1 663 Kbps /UM9g+Bb Encoded date : UTC 2011-05-16 14:48:07 se7_:0+w Writing application : mkvmerge v4.3.0 ('Escape from the Island') 编译于 Sep 5 2010 10:30:51 %Z.>)R4 Writing library : libebml v1.0.0 + libmatroska v1.0.0 e$Md?Pq Video #1 ]Alu~ Dw ID : 1 W\FKAvS Format : AVC \XmtSfFC Format/Info : Advanced Video Codec r ZGA9duy Format profile : [url=mailto:High@L4.0]High@L4.0[/url] QWfwoe&;R: Format settings, CABAC : Yes Q/0;r{@Tq} Format settings, ReFrames : 2 frames =:9n+7~$
Muxing mode : Container profile=Unknown@4.0
5.5dB2w Codec ID : V_MPEG4/ISO/AVC a08B8 Duration : 26mn 52s NE3G!qxL Width : 640 pixels qdUlT*fw Height : 480 pixels ?CM,k0 Display aspect ratio : 4:3 j+Wgjf Frame rate : 23.976 fps 9 Q].cDe[ Original frame rate : 11.988 fps @WFjM Resolution : 24 bits 0~BQ8O=+mn Colorimetry : 4:2:0
Z p]Bs Scan type : Progressive O(WFjmHx Writing library : x264 core 38 svn-341 WDgp(Av! Audio #2 :GGsQ
n ID : 2 Ya\G/R Format : AAC j
>0S3P, Format/Info : Advanced Audio Codec ux{OgFfi Format version : Version 4 ^JYR^X>_ Format profile : LC /?2yo{Fg Format settings, SBR : Yes gU+BRTZ&x Format settings, PS : No
@A$%baH0 Codec ID : A_AAC Z(U&0GH` Duration : 26mn 54s Fi*6ud\n! Channel(s) : 2 channels /R@(yT=t Channel positions : L R ,{zvGZ| Sampling rate : 44.1 KHz Nnv&~D> Resolution : 16 bits Xb6@;G" Video delay : -83ms n=hz7tjaz Title : Cantonese粵語 9f
BD.9A Language : Chinese mHw1n=B Audio #3 _);1dcnR ID : 3 )xTp7YnZ; Format : AAC G?jY>;P) Format/Info : Advanced Audio Codec y>wr $ Format version : Version 4 O7rm( Format profile : LC |wK)(s Format settings, SBR : Yes hA/FK Format settings, PS : No j}h50*6KO Codec ID : A_AAC qD`')=
Duration : 26mn 54s #Oe=G:+A Channel(s) : 2 channels D0"+E* Channel positions : L R :%!SzI? Sampling rate : 44.1 KHz 4
5ct*w Resolution : 16 bits drb_GT Video delay : -83ms Uhg[#TUK Title : 日語 R@"N{ [9 Language : Japanese ^P{'l^CVX tP3H7Yl!g ==============================================================
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