MP4 → M4A

Tahurihia Tō MP4 Tuhinga o mua M4A kōnae ngawari

Tīpakohia ō kōnae

Ka tangohia rānei ā-rānei ōna doke ki konei

Whakahaua: 1 Ka whakawhitinga/ora · Kāore i te whakawhāiti →

Tahurihia kia 1 GB ngā kōnae mō te kore utu, ka taea e ngā kaiwhakamahi Pro te tahuri ki te 100 GB ngā kōnae; Waitohu inaianei

Tukuatu ana

Me pēhea te huri MP4 Tuhinga o mua M4A

Hipanga 1: Tukuatu tō MP4 ngā kōnae mā te whakamahi i te pātene i runga ake nei, mā te tōia me te whakataka rānei.

Hipanga 2: Pāwhiritia te pātene 'Tahuri' hei tīmata i te tahuritanga.

Hipanga 3: Tikiake i tō mea kua tahurihia M4A kōnae

MP4 Tuhinga o mua M4A Ngā Pātai Auau mō te Tahuritanga

He pēhea te whakawātea i te oro mai i tōku pūranga MP4 hei M4A?

Whakataki i te MP4, ā, ka whakawātea te kaihanga i te rerenga oro, kātahi ka whakakōrerotia ki M4A. Kāore he whakawhitinga ataata tuarua - ka whakakoretia te rererangi ki te āhua o te whakawāteatanga, nā reira he tere ake te whakawāteatanga i te whakakōrerotanga katoa. Ko MP4 te ISO/IEC 14496-14, i paerewa i te tau 2001, ā, i puta mai i te āhua o te kāwai pēnei i te QuickTime e whakamahia ana e MOV. Ko te M4A he pūrere MP4 e mau ai te oro anake, ā, ko te mea e whakaputaina ana e iTunes, Apple Music me te taupānga iPhone Voice Memos.

He whakawhitinga te MP4 ki te M4A he porowhita tuarua o te whakawhāiti ngaro?

Heoi, ā, e tika ana te whakarite i te taha. He ngaro nga āhuahira e rua, nā reira ko te M4A encoder e mahi ana mai i te oro, kua puta kētia e tētahi whakawhitinga psychoacoustic, ā, ko ōna whakataunga anō e whakakotahi ana i te tautuhi tuatahi. I te 192 kbps, i runga ake rānei i te hua, he mārama tonu te hua mō te nuinga o te whakarongo. Mēnā kei a koe tētahi māngai kore ngaro i tētahi wāhi, ka whakakōrerotia te M4A mai i tērā, ka ārai katoa i te whakawhitinga rua. Tata tonu ki ia MP4 i te mohoao he ataata H.264 me te oro AAC; kei roto hoki i te kāwai he HEVC, AV1 me VP9. Kei roto i te M4A te AAC i te nuinga o nga take, Apple Lossless rānei (ALAC) ina puta mai i tētahi tāruatanga kore.

Ka taea e au te tohu i te M4A me ngā mōhiohio kaiwaiata me te pūrākau?

Heoi, ā, he whiwhinga tūturu i runga i te MP4, kāore he wāhi e whakawhirinaki ana ki te rokiroki i tētahi o ia. M4A e mau ana i te taitara, te kaitapere, te pūrākau, te tau, te tau rererangi me te toi kāwai i roto i te kāwai anō, kia tika ai te pūranga pūoro me te kore e whakawhiti i te kāwai. Ka pupuri te M4A i ngā metadata āhua iTunes, ngā wāhanga me ngā mahi toi, ā, ko te āhua oro māori i runga i ngā pūrere Apple katoa.

He aha te mokatere oro e whakamahia ana e te M4A?

Ko te bitrate tōtika mō te ngaro M4A ko te 192 kbps, he mārama mō te pūoro. Ka taea e koe te whakawātea ki te 320 kbps (audiophile), 96-128 kbps rānei (rorohiko / podcast / pūranga iti ake). Ka puta te bitrate dropdown i roto i ngā kōwhiringa tiketike i mua i te kōwhiri i te tahuri.

Ka ngaro ahau i te āhua o te oro, e haere ana mai i te MP4 ki te M4A?

Mēnā he kore ngaro (WAV, FLAC) te M4A, ka tiakina ngā tauira katoa ki te tika. Mēnā he ngaro te M4A (MP3, AAC, OGG, Opus), ka whakawhāiti anō te pūkōrero M4A te pūtake oro — i te 192 kbps he mārama te hua mō te nuinga o ngā ihirangi. Ka haere te ngaro → kāore i te whakaora i ngā taipitopito kua whakakoretia.

E pupuri ana te M4A oro i te auau tauira taketake?

Mā te pūmau, ā, — 48 kHz te oro i roto i tōmu MP4 e noho ana 48 kHz i roto i te huaputa M4A. Mō te pūkōrero CD-burning, te pūkōrero rānei, ka taea e koe te whakawātea ki te 44.1 kHz mā te whakatata i te ōrite tauira; he mātauranga SoX-kitenga nui te tātai.

Ka taea e au te whakawātea i te oro mai i ngā pūranga maha MP4 ki M4A i roto i tētahi rōpū?

He — ka tangohia tētahi pūrākau o ngā pūranga MP4, ā, ka tangohia e tātau te oro i te āhua ōrite. Ka whiwhi ngā kaiwhakamaori Premium ki ngā kaimahi ā-tōtahi kē atu; i runga i te 50-file batch ko tēnei te rerekētanga i waenganui i ngā minu me ngā minu tekau.

Ka tohu te M4A me te taitara / kaitapere / metadata pūranga?

Mēnā ka mau te MP4 i te wāhanga, i te metadata rānei o te rerenga, ka tārua tātau i ngā āpure taitara / kaitapere / pūrākau ki roto i te M4A. Mēnā kāore, ka puta mai te M4A kāore i te whakahuahua - ka whakamahia te kaiwhakawhanake tohu (Mp3tag, Picard) i muri i te whakahuahua mō te whakahuahua ā-whakahaere.

He maha te wā e tangohia ai te pūoro M4A mai i tētahi wā 1-ora MP4?

He tere te reo demux + encoding — i te nuinga o te 5 ki te 15% o te roanga pūtake. Ko te 1-ora MP4 → M4A e whakamutu ana i roto i te 3 ki te 9 minu i runga i te pūtautau paerewa; Ka whakaiti te whakatata Premium i tēnei i ngā mahi whakatōpū.

Ka taea e au te whakawātea i tētahi wāhanga anake o te MP4 oropū hei M4A?

Kāore i tēnei utauta — ka tangohia te oro katoa hei M4A, kātahi ka whakamahia /oro-trim /, /oro-kuteru rānei hei whakaiti i te wāhanga. He tere ake te ara e rua-whakapae i te mahi whakakotahi, ā, ka hoatu ki a koe te mana tika o te taumata-whakapae.

He tūmataiti te tātau MP4 i te wā o te whakawāteatanga oro?

He — te tauira anō o te āhua o te āhua o ia huringa: kaimahi motuhake, kāore he arotakenga tangata, he whakakore ā-tōtika i roto i ngā minu o te whakamutu. Ko te matapihi o te tiakitanga i roto i /privacy/.

He aha te take i whakawāteatia ai te M4A i te wā i whakangāwaritia ai te MP4?

Almost always a wrong-stream selection: MP4 had multiple audio tracks and the demuxer picked an empty or auxiliary stream. Use the advanced "audio stream" picker to select stream 0, 1, 2 explicitly, or target an M4A container that supports multi-track output (FLAC, OGG).

MP4

Ka taea e te hōputu ipu MP4 te pupuri i ngā ataata, oro, hauraro, me ngā whakaahua i roto i te kōnae kotahi me te kōpeketanga tino pai.

M4A

M4A Ko te hōputu kōnae ororongo e te piri tata ki MP4. Ka tukuna he kohinga ororongo kounga teitei me te tautoko mo nga metadata, e pai ana mo nga momo tono.