WMA → M4A

Sinthani Yanu WMA ku M4A mafayilo mosavuta

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kapena dinani ndi kuchotsani mafayilo anu apa

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Kukweza

Momwe mungasinthire WMA ku M4A

Gawo 1: Kwezani yanu WMA mafayilo pogwiritsa ntchito batani lomwe lili pamwambapa kapena pokoka ndi kugwetsa.

Gawo 2: Dinani batani la 'Convert' kuti muyambe kusintha.

Gawo 3: Tsitsani pulogalamu yanu yosinthidwa M4A mafayilo

WMA ku M4A Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji WMA audio ku M4A popanda kuwononga mtundu?

Kutsitsa fayilo ya WMA ndipo wosinthira amasankha M4A codec ndi bitrate kuti agwirizane ndi chiyambi. M4A yopanda kusowa (WAV / FLAC / ALAC) imateteza zonse zomwe zimafanana; M4A yowonongeka (MP3 / AAC / OGG / Opus) imayikidwa ku 192 kbps yomwe ndi yosawoneka bwino kwa amayi ambiri. WMA ndi lossy mwa default, mu ASF chidebe, ndi lossless ndi mawu-optimised mitundu yomwe ndi yosadziwika anakumana. M4A ali AAC m'malamulo ambiri, kapena Apple Lossless (ALAC) pamene anachokera ku lossless rip.

Kodi kusinthira WMA ku M4A ndi gawo lachiwiri la kutsitsa kwa lossy?

Ndikukhulupirira kuti ndinu oyenera, ndipo ndibwino kuti mupange. Mafomu awiriwa ndi owonongeka, choncho M4A encoder akuchita ntchito kuchokera ku audio yomwe yakhala ikuyenda mwa psychoacoustic pass, ndipo masankho ake oyamba amapanga gawo loyamba. Pa 192 kbps kapena pamwambapa, zotsatirazi ndizosawoneka bwino kwa ambiri owerenga. Ngati muli ndi master yopanda kuwonongeka, kulemba koyamba kwa M4A kuchokera ku yomwe imalepheretsa kupitanso koyamba.

Nchifukwa chiyani ena a WMA anga a WMA sasintha?

DRM. Mtundu wa WMA mafayilo amasinthidwa ndi sitolo kapena pulogalamu yomwe idatulutsa, ndipo mawu osakira satha kusinthidwa ndi aliyense wosintha. Chomwecho chomwe mwachotsa, cholemba kapena chogula popanda kuteteza chimasinthidwa moyenera; kugula kwa licensed sichidzachitika. WMA ndi unsupported pafupifupi kulikonse kunja kwa Windows, ndi zaka WMA owona angagwiritsidwe ntchito DRM kuti amaletsa kusintha kwathunthu.

Kodi fayilo yochokera ku M4A idzagwiritsa ntchito bitrate iti?

Mtengo woyambirira ndi 192 kbps kwa lossy M4A; pass-through kwa lossless M4A. Chotsani 320 kbps kwa audiophile kapena 96 kbps kwa mawu / podcast. Chosankha chimasintha kukula kwa fayilo motsutsana ndi kumvetsera; pansi pa 96 kbps lossy artifacts amawoneka pa nyimbo.

Kodi kuchoka ku WMA kupita ku M4A kumachepetsa mtundu wanga wa audio?

Ngati WMA ndi lossy ndipo M4A ndi lossless (mwachitsanzo MP3 → WAV), M4A si yabwino kuposa WMA — simungathe kubwezeretsa zambiri zomwe zatulutsidwa. Ngati WMA ndi lossless ndipo M4A ndi lossy, M4A codec imabwezeretsa; pa 192 kbps zotsatira zake ndi zosawoneka bwino kwa zinthu zambiri.

Kodi wosintha WMA kupita ku M4A amasunga ID3 / metadata tags?

Ndiyo — mutu, woimba, album, chaka, mndandanda wa nyimbo, ndi zithunzi za album zimawerengedwa kuchokera ku WMA ndipo zimalemba ku M4A komwe mtundu umathandizira ma tag. Zomwe zimadziwika bwino (MP3, AAC, FLAC, OGG) zimasamalira ma tag bwino; WAV yosapanga dzimbiri siyichita. M4A ndi MP4 chidebe kunyamula audio okha, ndipo ndi zimene iTunes, Apple Music ndi iPhone Voice Memos app kupanga.

Kodi ndingasinthire mamiliyoni a WMA mafayilo ku M4A?

Yai - tidzayika fayilo ya WMA ndipo tidzazipanga mofanana. Premium ili ndi ogwira ntchito ambiri mofanana ndi malire a fayilo, kotero fayilo ya 500 imatha m'maola angapo osati m'maola angapo.

Kodi M4A idzakhala ndi kuchuluka kwa sampling yomweyo ngati WMA?

Mwa default yes — 48 kHz WMA imakhala 48 kHz mu M4A. Ngati mukufuna kuchepetsa kusamvana kwa ma CD (96 kHz → 44.1 kHz kwa kulemba CD), kusankha kwa kusamvana kwa ma CD kumagwiritsa ntchito kusamvana kwabwino kwambiri panthawi yolemba ma CD.

Kodi ndingasinthire kuwala kwamphamvu pamene ndikusintha WMA kupita ku M4A?

Ndiyo — njira yosintha mawu kuti akhale oyenera imagwiritsa ntchito ITU-R BS.1770 / EBU R128 kuti ikhale yoyenera kwa M4A, yolenga -14 LUFS (zoyenera kusewera) kapena -16 LUFS (zoyenera kusewera podcast).

Kodi M4A yanga idzasewera pa stereo yagalimoto, iPod, ndi Sonos?

MP3 imasewera kulikonse. AAC imasewera pa Apple, ambiri a Android, ndi Sonos. FLAC imasewera pa Sonos ndi Android koma si pa iPods oyambirira. WAV imasewera pa chilichonse koma ndichodabwitsa. Kusintha kwa chipangizo chatsopano chimasankha M4A codec yosinthidwa kwa zida zanu zofunikira. M4A amasunga rich iTunes-style metadata, zigawo ndi ntchito zojambulajambula osatha, ndi ndi native audio mtundu pa onse Apple chipangizo. M4A amachititsa zinthu ziwiri kwambiri zosiyana m'mbuyo kwa m'modzi kuwonjezeka - lossy AAC ndi lossless ALAC - ndi non-Apple hardware thandizo ndi zosagwirizana.

Kodi fayilo yanga WMA ndi yapadera pamene ikusintha kukhala M4A?

Ndikofunika — fayilo ya WMA imatha kuchitidwa m'ma worker osiyana ndipo imatha kuthetsedwa m'maola ochepa. Tisaseweranso, sitisunga nthawi yaitali, kapena sitigawana zomwe zili pa audio.

Kodi ndi nthawi yayitali bwanji kuti musinthe nthawi ya 1-hour WMA kuti M4A?

Kusintha kwa codec yofanana: 10 mpaka 30 masekondi. Kusintha kwa codec yosiyana: 10 mpaka 20% ya nthawi yoyambira, kotero nthawi ya 1 ola WMA → M4A imatha m'maola 6 mpaka 12. Ntchito za batch zimagwirizana pakati pa ogwira ntchito kuti ziwonjezere kufulumira.

WMA

WMA (Mawindo Media Audio) ndi zomvetsera psinjika mtundu kukula Microsoft. Amagwiritsidwa ntchito kwambiri kusonkhana ndi nyimbo pa intaneti.

M4A

M4A ndi mtundu wamafayilo omvera womwe umagwirizana kwambiri ndi MP4. Imapereka kupsinjika kwapamwamba kwamawu ndi chithandizo cha metadata, ndikupangitsa kuti ikhale yoyenera kugwiritsa ntchito zosiyanasiyana.