WMV → MP4

Guqula Eyakho WMV ukuba MP4 iifayile ngokulula

Khetha iifayile zakho

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Iyalayisha

Indlela yokuguqula WMV ukuba MP4

Inyathelo 1: Layisha eyakho WMV iifayile usebenzisa iqhosha elingasentla okanye ngokutsala nokuwisa.

Inyathelo lesi-2: Cofa iqhosha elithi 'Guqula' ukuze uqalise ukuguqula.

Inyathelo lesi-3: Khuphela i-converted yakho MP4 iifayile

WMV ukuba MP4 Imibuzo Ebuzwa Rhoqo Ngokuguqula

Ndiyiguqula njani i-WMV ibe yi-MP4 ngaphandle kokulahlekelwa umgangatho wevidiyo?

Layisha phezulu ifayili yakho ye WMV kwaye umguquli uqhube i-CRF-esekelwe kwi-encoding ephindayo ebhekisa kwi-visually-lossless MP4 imveliso (i-CRF 18 ngokumiselweyo, amaxabiso aphantsi = ifayili enkulu / umgangatho ophezulu). I-codec ikhethiwe ukuhambelana ne MP4 isiqulathi-zifayili — H.264 ye-wide-compat MP4, H.265 ye-size-efficient MKV, VP9 ye-WebM, AV1 yee-pipelines ezintsha.

Yeyiphi i-codec yevidiyo esetyenziswa yi-MP4?

Ixhomekeke kwi MP4 isiqulathi seefayili. I-MP4 imiselwe ukuba ibe yi-H.264 ukuze ixhase ukudlala okubanzi phakathi kweefowuni, ii-browser, kunye ne-Smart TVs. I-MKV imiselwe ukuba ibe yi-H.265 / HEVC ukuze ilinganise nengxenye yobungakanani befayili kwinqanaba elifanayo lomgangatho. I-WebM imiselwe ukuba ibe yi-VP9. Iinketho eziphambili zibonisa ukhetho olucacileyo lwe-codec ukuba ufuna ukucima.

Ingaba umculo wam wesandi uya kuqhubeka uguquka ukusuka kwi WMV ukuya kwi MP4?

Ewe. Xa WMV ne MP4 zibelana nge-codec yesandi (umzekelo, zombini zithabatha i-AAC), isandi siphinda sixutywe ngaphandle kokubuyisela ukukhowuda - i-bit-identical. Xa ii-codecs zihlukile, isandi siguqulwa kwi-AAC / Opus / Vorbis kuxhomekeke ekubeni i-MP4 ixhasa ntoni. I-audio enezithotho ezininzi (iingxelo, iilwimi ezitshintshiweyo) igcinwa.

Ndingagcina i-framerate yokuqala xa ndiguqula i-WMV ibe yi-MP4?

Ngokungagqibekanga ewe — i-24fps WMV ihlala i-24fps kwi-MP4; i-60fps WMV ihlala i-60fps. Ukuba ufuna ukuguqula umyinge (umzekelo, i-interlaced 29.97 → i-progressive 30, okanye i-60 → 30 yemida yokukhuphela), ukhetho lwe-framerate luphatha 3:2 ukutsala ezantsi, ukususa uthungelwano, kunye nokuqhekeka kwe-frame kwindlela efanayo yokufihla.

Ubungakanani befayili butshintsha njani ukusuka kwi WMV ukuya kwi MP4?

I-codec efanayo yokuphinda-phinda (WMV H.264 → MP4 H.264 itshintsha kuphela isiqulathi seefayili): ubungakanani obufanayo. Utshintsho lwe-codec lunokutshintsha ngokumangalisayo: H.264 → H.265 luya kuquka ifayili kwinqanaba elifanayo lomgangatho wokubona; VP9 imalunga nokuthelekiswa; AV1 icima enye i-20-30% kodwa ihamba phantsi ukukopela.

Ingaba ifayili MP4 iyadlala kwi-iPhone, Android, kunye neSmart TVs?

MP4 / H.264 idlala ngokusemthethweni kwisixhobo ngasinye esitsha. MOV / H.264 idlala kwizixhobo ze-Apple kunye neTV ezininzi kodwa hayi rhoqo kwi-Android edala. MKV ifuna i-VLC kwi-iOS. WebM ikwi-browser-first. Iinketho eziphambili ziquka "ukulungelelanisa isixhobo" esimiselweyo esikhetha i-MP4 codec / isiqulathi esikhuselekileyo senjongo yakho.

Ithatha ixesha elingakanani ukutshintsha i-WMV yevidiyo yeyure enye ibe yi-MP4?

I-Same-codec re-mux ikwindawo efutshane-imizuzu engama-30 ukuya kwengama-60 yefayili yeyure enye. I-codec epheleleyo ephinda-ikhowudi iqhuba malunga nexesha lomthombo we-0.3-0.7x kwi-GPU yethu, ngoko ke i-1-iyure WMV → MP4 igqiba kwimizuzu engama-18-40 ngokuxhomekeka kwisisombululo kunye ne-codec emiselweyo.

Yintoni ubukhulu bomfanekiso oxhaswayo kwi WMV ukuya kwi MP4?

Ukuza kuthi ga kwi-8K (7680×4320) kwi-premium plans. Ukuguqulwa simahla kugqityiwe kwi-4K (3840×2160) ngumda wobungakanani befayili nganye. I-HDR metadata (HDR10, HDR10+, Dolby Vision xa ikhona) iqhutywa apho zombini i WMV ne MP4 iinqanawa zixhasa khona.

Ingaba i-WMV yevidiyo yam ifihlakeleyo ngexesha liguqulwa libe li MP4?

Ewe. Iifayili zevidiyo ezilayishwe phezulu ziqhubekekiswa kubasebenzi abakhethekileyo, azisoloko zijongwa ngumntu, azisoloko zidweliswe kwisikhombisi, kwaye zicinywa kwimizuzu embalwa emva kokuphela. Ifestile yokugcina ibhalwe kwi /privacy/ kwaye asipapashi naziphi na iziqu zesifundo ezivela kubasebenzisi abalayishwe phezulu.

Ndingatywina, ndiyimise, okanye ndiyijikelezise ngexesha lokuguqulwa kwe WMV ukuya kwi MP4?

Ayikumgangatho ofanayo — sebenzisa /video-trim/ okanye /video-cutter/ ukucima kuqala, emva koko qhuba uguqulelo WMV → MP4. Ukudibanisa ukusika nokutshintsha kukhawulezayo kunekubuyisela kwakhona ikhowudi yonke i WMV ukushiya kuphela imifanekiso engasebenziyo.

Kutheni le nto ifayili MP4 imnyama xa ithelekiswa nomboneleli WMV?

I-bitrate-too-low imiselwe rhoqo. Ukunxulumana kwakhona ukusuka kwi-bitrate ephezulu WMV ukuya kwi-CRF emiselweyo MP4 icinezela kakhulu kwimiboniso enamandla. Shenxisa i-CRF ezantsi ukuya kwi-16-18, okanye misela i-bitrate yenjongo ecacileyo ehambelana nomcebo WMV, kwaye i-MP4 ibuyisela ucacileyo.

Ingaba i-WMV ukuya kwi-MP4 iguqula iinkwenkwezi ezingaphantsi?

Ewe — iingoma zesihloko esingaphakathi (mov_text kwi-MP4, SRT/ASS kwi-MKV) zigcinwa xa zombini i WMV ne MP4 iziqulathi zixhasa ezo. Isihloko esitywiniweyo (i-hardsub) sidlulisa ngokuzenzekelayo kuba zihlala kwisakhelo sevidiyo ngokwaso.

WMV

I-WMV (iVidiyo yeWindows Media) yifomati yocinezelo yevidiyo ephuhliswe nguMicrosoft. Ngokuqhelekileyo isetyenziselwa ukusasaza kunye neenkonzo zevidiyo ze-intanethi.