WMA → M4A

Sinthani Yanu WMA ku M4A mafayilo mosavuta

Sankhani mafayilo anu

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 kupita ku M4A popanda kuwononga mtundu?

Kutsitsa fayilo ya WMA ndipo wosintha amasankha kulumikizana kwa M4A codec / bitrate komwe kumagwirizana ndi fayilo ya chiyambi. M4A yopanda kusowa (WAV / FLAC / ALAC) imasunga zonse mwatsatanetsatane; M4A yowonongeka (MP3 / AAC / OGG / Opus) imayikidwa ku 192 kbps yomwe ndi yosawoneka bwino kwa pafupifupi zonse zomwe zili ndi nyimbo. 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 ndi bitrate iti yomwe fayilo ya M4A imatha?

Default 192 kbps for lossy M4A; pass-through for lossless M4A. Override to 320 kbps if you want maximum lossy fidelity, 128 kbps for size-restricted podcast distribution, or 96 kbps for voice-only sources where the smaller file matters more than studio detail.

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

Ngati WMA ndi yowonongeka (MP3, AAC) ndi M4A ndi yopanda kusowa (WAV, FLAC), M4A si yabwino kuposa WMA - simungathe kubwezeretsa zambiri zomwe zatulutsidwa ndi WMA codec yowonongeka. Ngati WMA ndi yopanda kusowa ndi M4A ndi yopanda kusowa, yembekezerani kuti M4A encoder ibwezeretse; pa 192 kbps kuwonongeka kumakhala kosadziwika kwa nkhope zambiri.

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

Ndikoyenera - dzina, woimba, album, chaka, mndandanda wa nyimbo, album art, BPM, kusewera-kupeza kumawerengedwa kuchokera ku WMA chomera ndi kulemba m'madera ofanana pa M4A chomera. ID3v2 (MP3), Vorbis maganizo (OGG, FLAC), MP4 atoms (AAC, M4A), RIFF INFO (WAV), iXML chidutswa zonse map cleanly. M4A ndi MP4 chidebe kunyamula audio okha, ndipo ndi zimene iTunes, Apple Music ndi iPhone Voice Memos app kupanga.

Kodi ndingasinthire ma WMA ambiri a M4A?

Yes — chotsani fayilo ya WMA ndipo tidzazipanga mofanana. Premium ili ndi ogwira ntchito ambiri mofanana ndi malire a fayilo, kotero fayilo ya 500 imatha m'maola ochepa kuposa maola asanu. Mtundu wa fayilo umasungidwa mu ZIP yotulutsidwa.

Kodi M4A idzakhala ndi kuchuluka kwa sampling yomweyo ngati WMA?

Mwa default ndi yemweyo (48 kHz WMA imatulutsa 48 kHz M4A, 44.1 kHz WMA imatulutsa 44.1 kHz M4A). Kuti mukwaniritse zofunikira — monga kuchepetsa 96 kHz studio masters mpaka 44.1 kHz M4A polemba CD, kapena kuwonjezera 22 kHz voicemail mpaka 44.1 kHz M4A — mndandanda wolowetsa wa sampling-rate umagwiritsa ntchito kuwonjezera kwa SOX-style.

Kodi ndingasinthire kuwala kwa mawu m'mawindo a WMA mpaka M4A?

Ndiyo — kusankha kwa loudness-normalize kumagwiritsa ntchito ITU-R BS.1770 / EBU R128 ku M4A output, kulenga -14 LUFS (streaming standard) kapena -16 LUFS (podcast standard) kapena malire apadera. Kuthandiza pamene mukusintha nyimbo ndi zigawo zosiyanasiyana za mastering kukhala imodzi M4A playlist.

Kodi M4A idzasewera pa stereo yagalimoto yanga / iPod / Sonos / wokamba nkhani wa Bluetooth?

MP3 imasewera padziko lonse lapansi pazinthu zonse zomwe zidapangidwa mzaka zapitazi 20. AAC imasewera pa Apple, ambiri a Android, Sonos, ndi ma stereo amakono agalimoto. FLAC imasewera pa Sonos ndi Android yaposachedwa, osati bwino pa iPods oyambirira. WAV imasewera pa chilichonse koma fayilo ndi yayikulu. Kuwonekera kwa chipangizocho chimasankha M4A codec yotetezeka kwa pulogalamu yomwe mumasankha. 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 yachikhalidwe panthawi yosintha?

Ndikofunika — fayilo WMA yotulutsidwa imathetsedwa m'maola ochepa. Tisasewera, sitisunga kapena sitigawana zolemba za audio. Mzerewu umagwira ntchito pa zida zomwe timayang'anira kuyambira pachiyambi mpaka kumayambiriro; palibe ntchito yachitatu yomwe imalandira fayilo yanu.

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

Kusintha kwa codec (mwachitsanzo, FLAC -> MP3 kapena WAV -> AAC): nthawi zambiri 10-20% ya nthawi yoyambira, choncho 1-hour WMA -> M4A imatha m'maola 6-12 pa chingwe cha standard.

WMA

WMA (Mawindo Media Audio) ndi Audio 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.