MP4 → M4A

Guqula Eyakho MP4 ukuba M4A iifayile ngokulula

Khetha iifayile zakho

okanye rhuqa uze ushiye iifayile zakho apha

Inkqubo ekhululekileyo: 1 IiNguqulelo/iyure · Yiya ngaphandle komda →

Guqula iifayile ezifikelela kwi-1 GB simahla, abasebenzisi bePro banokuguqula iifayile ezifikelela kwi-100 GB; Bhalisa ngoku

Iyalayisha

Indlela yokuguqula MP4 ukuba M4A

Inyathelo 1: Layisha eyakho MP4 iifayile usebenzisa iqhosha elingasentla okanye ngokutsala nokuwisa.

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

Inyathelo lesi-3: Khuphela i-converted yakho M4A iifayile

MP4 ukuba M4A Imibuzo Ebuzwa Rhoqo Ngokuguqula

Ndiyikhupha njani i-audio kwifayili MP4 njenge M4A?

Layisha phezulu ifayili ye MP4 kwaye siyi-demux i-audio track, emva koko siyi-transcode kwi M4A. Akukho kungena kwevidiyo kwaye akukho kufumana umgangatho ngaphandle kwento ekhoyo kwi-M4A codec; isixhobo /extract-audio/ siqhuba i-pipeline efanayo.

I-M4A ifayili isebenzisa i-bitrate yesandi enjani?

I-M4A emiselweyo ye-bitrate yi-192 kbps (ibonisa ngaphaya kwengoma). Nciphisa ukuya kwi-320 kbps (i-audiophile), 128 kbps (i-podcast eqhelekileyo), okanye i-96 kbps (ilizwi/ifayili encinci). Ukhetho lutshintshiselana ngobungakanani befayili ngokuchasene nobuxoki obunokulungiswa kwaye lubonakaliswa kwiinketho eziphambili phambi kokuguqula.

Ingaba ndiya kulahlekelwa umgangatho wesandi xa ndisuka kwi-MP4 ukuya kwi-M4A?

Ukuba M4A ayilahleki (WAV, FLAC), yonke isampuli yombhalo ovela kumbhalo wesandi igcinwa ngokuchanekileyo. Ukuba M4A ilahlekile (MP3, AAC, OGG, Opus), i-M4A codec iphinda icinezele — kwi-192 kbps emiselweyo le nto icacile kuzo zonke izinto ezivela kumbhalo.

Ingaba i-M4A ekhutshweyo igcina i-sample rate yangaphambili?

Ngokungagqibekanga ewe — i-48 kHz yothotho lwesandi ngaphakathi kwe MP4 ivela kwi-48 kHz ngaphakathi kwe M4A. Ukuba ufuna i-44.1 kHz (uthelekiso lwe-CD-quality) i-sample-rate ephambili ehla-phantsi iphatha i-resample ngecebo lokucoca ulwelo eliphezulu le-quality (akukho zinto ezibonakalayo ezibizwa ngokuba zi-alias).

Ndingayikhupha i-audio kwiifayili ezininzi MP4 kwi M4A kwiqela elinye?

Ewe — susa isiqulathi seefayili MP4 ngaphakathi kwaye sikhuphe isandi ngokuthe tye. Abasebenzisi abaphezulu bafumana abasebenzi abathe tye abaninzi kwaye akukho bungakanani befayili nganye obuphezulu; kwifayili ye-50-iqela lento le yinto eyahlukileyo phakathi kweemizuzu ezili-90 nemizuzu eli-8.

Ingaba ifayili M4A iya kuphawulwa ngesihloko / umculi / i-albham?

Ukuba i-MP4 ifayile inesihloko okanye i-metadata yokuhamba (eqhelekileyo kwi-DVD rips, iipodcasts, iividiyo zengoma), sikopa umculi / isihloko / imihlaba ye-albham kwi M4A isiqulathi seefayili. Amacebo angaphawulwanga MP4 avelisa M4A angaphawulwanga — sebenzisa umhleli we-tag (Mp3tag, Picard, MusicBrainz) emva koko ukuba ii-tags ezininzi zibalulekile.

Ithatha ixesha elingakanani ukushenxisa i-M4A kwifayili ye-MP4?

Ukutsala isandi kukhawulezayo kakhulu kunokuphinda kubhalwe ikhowudi ividiyo - ngokuqhelekileyo 5-15% yobude bomthombo. Iyure ye-1 MP4 → M4A igqiba kwimizuzu ye-3-9 kwinkqubo eqhelekileyo; ividiyo yemizuzu emi-5 igqiba ngaphantsi kwemizuzu.

Ndingayikhupha icala le-MP4 yesandi njenge-M4A?

Akukho kulo mhlathi - khupha isandi esipheleleyo njenge M4A kuqala, emva koko sebenzisa /audio-trim/ ukucima icandelo. Umendo wenyathelo elinye ukhawulezayo kunenkqubo edityanisiweyo kwaye ukuvumela ukuba ujonge kuqala isandi esikhutshiweyo phambi kokucima.

Ingaba ifayili yam MP4 ifihlakeleyo xa ndikhupha isandi?

Ewe — imodeli yobumfihlo efanayo neyokuguqulwa ngalinye kwiwebhusayithi: abasebenzi abakhuselekileyo, ukucinywa okuzenzekelayo kwimizuzu, akukho hlaziyo lomsebenzisi lweaudiyo okanye imixholo yevidiyo. Bona /privacy/.

Kutheni ifayili yam M4A isebenzisa izithuba ezingasebenziyo?

Iindawo ezizitshixo zihlala zithetha ukuba ifayili MP4 inenkqubo yesandi eninzi-ye-track (igqalelo, ulwimi olutshintshiweyo, iziqhagamshelanisi ezijikelezayo) kwaye sikhethe umsinga ongafanelekanga. Sebenzisa ukhetho oluphambili "umsinga wesandi" ukukhetha ngokucacileyo umsinga 0, 1, njl.njl., okanye uphinde uhlanganise zonke iziqhagamshelanisi kwi-multi-track M4A isiqwenga ukuba M4A ixhasa oko.

Ingaba ukususwa kwe M4A ku stereo, mono, okanye 5.1?

Ubeko lwesiqhagamshelanisi lugcinwa ukusuka kwi MP4 ngokumiselweyo — i-5.1 MP4 ivelisa i-5.1 M4A apho i-codec ixhasa khona (AAC, FLAC, OGG, Opus). Iforce stereo okanye mono nge-channel-downmix option; isetyenziswa kwi-podcast workflows okanye ukudlala nge-bandwidth ephantsi.

Ingaba i-M4A ekhutshiweyo iyadlala kwi-iPhone, Android, okanye kwi-stereo yemoto?

I-MP3 idlala jikelele. I-AAC / M4A idlala kwi-Apple neyo yonke i-Android. I-OGG / Opus ifuna umdlali okutsha kwi-iOS kodwa idlala kakuhle kwi-Chrome / Firefox / VLC. Isixhobo esiphambili esimiselweyo sikhetha i-M4A codec enokuthi idlala kwinkqubo yakho emiselweyo.

MP4

Ifomathi yesikhongozeli seMP4 inokugcina ividiyo, iaudio, imibhalo engezantsi, kunye nemifanekiso kwifayile enye enoxinzelelo oluhle kakhulu.

M4A

I-M4A yifomati yefayile yomsindo esondeleleneyo neMP4. Ibonelela ngoxinzelelo oluphezulu lweaudio ngenkxaso yemetadata, iyenza ilungele usetyenziso olwahlukeneyo.