M4A → AC3

Sinthani Yanu M4A ku AC3 mafayilo mosavuta

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Kukweza

Momwe mungasinthire M4A ku AC3

Gawo 1: Kwezani yanu M4A 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 AC3 mafayilo

M4A ku AC3 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji M4A audio ku AC3 popanda kuwononga mtundu?

Kutsitsa fayilo ya M4A ndipo wosinthira amasankha AC3 codec ndi bitrate kuti agwirizane ndi chiyambi. AC3 yopanda kusowa (WAV / FLAC / ALAC) imateteza zonse zomwe zimafanana; AC3 yowonongeka (MP3 / AAC / OGG / Opus) imayikidwa ku 192 kbps yomwe ndi yosawoneka bwino kwa amayi ambiri. M4A ali AAC m'malamulo ambiri, kapena Apple Lossless (ALAC) pamene anachokera ku lossless rip. AC-3 ndi lossy multichannel audio, nthawi zambiri 5.1 pa 384 kapena 448 kbps, ndi metadata kwa dialogue normalization ndi downmixing.

Kodi kusinthira M4A ku AC3 ndi gawo lachiwiri la kutsitsa kwa lossy?

Ndikukhulupirira kuti ndinu oyenera, ndipo ndibwino kuti mupange. Mafomu awiriwa ndi owonongeka, choncho AC3 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 AC3 kuchokera ku yomwe imalepheretsa kupitanso koyamba.

Kodi malemba anga a nyimbo ndi album art adzapulumuka kusinthidwa kwa M4A ku AC3?

Siyimagwira ntchito. M4A imathamanga ndi metadata block yoyenera, koma AC3 siyimagwira ntchito yoyenera ya woimba, album, track number kapena cover art, choncho ma tag amatulutsidwa mosasokonezeka. Tengani M4A ngati kopita kosindikizidwa, kapena kulembanso kosindikizidwa pambuyo pake ndi chida monga Mp3tag kapena MusicBrainz Picard. AC-3 ndi yosagwira ntchito ndi standards zamakono ndi si yovomerezeka ndi masamba, mafoni kapena ambiri web player popanda downmix kuti stereo.

Nchifukwa chiyani ena a M4A anga a M4A sasintha?

DRM. Mtundu wa M4A 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. 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 yochokera ku AC3 idzagwiritsa ntchito bitrate iti?

Mtengo woyambirira ndi 192 kbps kwa lossy AC3; pass-through kwa lossless AC3. 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 M4A kupita ku AC3 kumachepetsa mtundu wanga wa audio?

Ngati M4A ndi lossy ndipo AC3 ndi lossless (mwachitsanzo MP3 → WAV), AC3 si yabwino kuposa M4A — simungathe kubwezeretsa zambiri zomwe zatulutsidwa. Ngati M4A ndi lossless ndipo AC3 ndi lossy, AC3 codec imabwezeretsa; pa 192 kbps zotsatira zake ndi zosawoneka bwino kwa zinthu zambiri.

Kodi wosintha M4A kupita ku AC3 amasunga ID3 / metadata tags?

Ndiyo — mutu, woimba, album, chaka, mndandanda wa nyimbo, ndi zithunzi za album zimawerengedwa kuchokera ku M4A ndipo zimalemba ku AC3 komwe mtundu umathandizira ma tag. Zomwe zimadziwika bwino (MP3, AAC, FLAC, OGG) zimasamalira ma tag bwino; WAV yosapanga dzimbiri siyichita. AC-3 ndi Dolby Digital, surround mtundu standardized kwa laserdisc, DVD, ATSC kufalitsa ndi sinema mu mapema 1990s.

Kodi ndingasinthire mamiliyoni a M4A mafayilo ku AC3?

Yai - tidzayika fayilo ya M4A 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 AC3 idzakhala ndi kuchuluka kwa sampling yomweyo ngati M4A?

Mwa default yes — 48 kHz M4A imakhala 48 kHz mu AC3. 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 M4A kupita ku AC3?

Ndiyo — njira yosintha mawu kuti akhale oyenera imagwiritsa ntchito ITU-R BS.1770 / EBU R128 kuti ikhale yoyenera kwa AC3, yolenga -14 LUFS (zoyenera kusewera) kapena -16 LUFS (zoyenera kusewera podcast).

Kodi AC3 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 AC3 codec yosinthidwa kwa zida zanu zofunikira. AC-3 ndi surround track onse AV wolandirayo, DVD wosewera mpira ndi TV decodes natively, chifukwa chake ndibe basiline kufalitsa.

Kodi fayilo yanga M4A ndi yapadera pamene ikusintha kukhala AC3?

Ndikofunika — fayilo ya M4A imatha kuchitidwa m'ma worker osiyana ndipo imatha kuthetsedwa m'maola ochepa. Tisaseweranso, sitisunga nthawi yaitali, kapena sitigawana zomwe zili pa audio.

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.