MP4 → AUDIO

Guqula Eyakho MP4 kuya AUDIO amafayela kalula

Khetha amafayela akho

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Ukulayisha

Indlela yokuguqula MP4 kuya AUDIO

Isinyathelo 1: Layisha eyakho MP4 amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

Isinyathelo 2: Chofoza inkinobho ethi 'Guqula' ukuze uqale ukuguqulwa.

Isinyathelo 3: Landa i-version yakho AUDIO amafayela

MP4 kuya AUDIO Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiyikhipha kanjani i-audio track kusuka ku-MP4 njenge-AUDIO?

Layisha phezulu ihele MP4 futhi umguquli ususa umsindo osuka kwi-MP4, bese uguqula ikhodi ibe yi-AUDIO. Amafreyimu wevidiyo asuswa — akukho sikhathi sevidiyo sesibili, akukho phutha lomgangatho ngaphandle kokukhishwa kwe-AUDIO codec. MP4 yi ISO/IEC 14496-14, ejwayelekile ngo-2001 futhi ivela ku-QuickTime box layout MOV isebenzisa. Umsindo lapha yinjongo ejwayelekile: umguquli ukhipha umsindo futhi ukhetha ukukopela okudlalwa ngokubanzi.

Ingabe ukushintsha MP4 kuya ku AUDIO kuyingxenye yesithathu yokucindezela okulahlekile?

Yebo, futhi kufanelekile ukuhlela. Izifomethi zombili ziyi-lossy, ngakho-ke i-AUDIO encoder isebenza kusuka kumsindo osele udlulele engxenyeni eyodwa ye-psychoacoustic, futhi iziphakamiso zayo zihlanganisa isiqephu sokuqala. Ku-192 kbps noma ngaphezulu, imiphumela ihlala icacile kakhulu. Uma une-lossless master nganoma yikuphi, uku-encoding i-AUDIO kusuka kulo kunciphisa ukudlula okuphindiwe ngokuphelele. Kuyinto encane kakhulu ukuthi wonke ama-MP4 aphilayo ayizividiyo ze-H.264 ezinesandi se-AAC; isiqoqi sigcina ngokusemthethweni i-HEVC, AV1 ne-VP9. Iphutha lokuphuma ku MP3 ku 192 kbps, okucacile kumathuluzi amaningi futhi okufundeka nganoma iyiphi idivayisi.

Ingabe ngiyiphawula i AUDIO ngemininingwane yomuntu odlalayo ne-album?

Yebo, futhi kuyinzuzo engokoqobo ngaphezulu kwe MP4, engeke ikwazi ukugcinwa kuphi naphi. AUDIO ifaka isihloko, umculi, i-album, unyaka, inani le-track kanye ne-cover art efakwe ngaphakathi kwebhokisi, ngakho-ke i-library yomculo ifaka ngokulungile ngaphandle kokufaka isandla. Ukukhetha isiphetho ngokuzenzakalela kuyindlela ekhawulezayo uma konke ofunayo wusandi ngaphandle kwehele, ngaphandle kwesinqumo se-codec esidinga ukukwenziwa.

Yini ekwenzeke kumsindo othile uma uguqula MP4 ku AUDIO?

Ihlolwe phansi ku-stereo, ngoba AUDIO ayinayo indlela esebenzayo ye-multichannel. Ukuxuba okuphansi kusetshenziswa izilinganiso ezijwayelekile ukuze umhlangano we-channel ephakathi uhlale ucacile futhi izingqimba zixhunywe ku-level ephansi. Noma yini esekelwe ekubekeni kwe-channel ehlukile idlule lapho lokhu kwenzeke. Okuzenzakalelayo ku-lossy, ngakho uma umsuka ube yi-lossless futhi ufuna ukuhlela noma ukuphatha, buza nge-WAV noma i-FLAC ngokucacile.

Yiyiphi i-track yomsindo ekhishwayo uma MP4 yami iqukethe eziningi?

Ngephutha umsindo 0 (umsindo wokuqala, ngokuvamile umsindo omkhulu). Uma MP4 wakho ufaka umlayezo, ama-dubs, noma umsindo ochazayo kuma-tracks angeziwe, umkhethi othuthukisiwe "umsindo" ukuvumela ukuthi ukhethe 1, 2, 3... ngokucacile. Uhlu lwe-track lubonisa ukufinyelela kokubuka kuqala ukuze ungakhetha ngokuzifihla.

Ihele AUDIO lisebenzisa i-bitrate enjani?

Iphutha AUDIO i-bitrate yi-192 kbps (icacile kuma-earphones amaningi). Nciphisa ku-320 kbps nge-audiophile output, noma 96-128 kbps ngezwi/podcast lapho ihele elincane liyisisekelo. Ama-AUDIO angeke alahlekile (WAV, FLAC) agweme ukumiswa kwe-bitrate futhi agcine yonke isampula.

Ingabe ukusuka ku MP4 kuya ku AUDIO kuzonciphisa ubunjani bomsindo wami?

Uma i AUDIO ifomethi ingekho lutho (WAV, FLAC, ALAC), yonke isampula yangempela igcinwa. Uma i AUDIO ingekho lutho (MP3, AAC, OGG, Opus), i-codec icindezela futhi — ku-192 kbps ushintsho alukwazi ukulizwa kuningi kwezithameli; ku-96 kbps ungalizwa ama-cymbals noma ama-sibilans abandayo. I-MP4 i Container ayinaso isikhundla kulolu hlelo — ukumiswa kwe-codec kuphela okubalulekile.

Ingabe i-AUDIO ekhishwayo igcina i-MP4 isilinganiso sesampula?

Ngokungagqibekanga yebo — 48 kHz MP4 umsindo ushintsha ube 48 kHz AUDIO umsindo, 44.1 kHz ushintsha ube 44.1 kHz. Uma ufuna ukuncipha kwesampula ukuze kusebenze (isibonelo 96 kHz studio masters kuya ku 44.1 kHz CD-quality AUDIO) isampula-rate dropdown yenza lokhu ngekhwalithi ephezulu yokusatshalaliswa kabusha.

Ingabe ngingakwazi ukukhishwa kwe AUDIO umsindo kusuka kusibaya sehele MP4?

Yebo — susa isibaya se MP4 amafayela endaweni yokulayisha futhi siqhube ukukhishwa ngokufanayo. I-Premium ithola abasebenzi abafanayo abaningi; ku-100-file batch (uhlelo lwemiculo-video olujwayelekile) lokhu kuyinto ehlukile phakathi kwamasekondi angama-90 namaminithi angama-8.

Ingabe kuthatha isikhathi esingakanani ukukhishwa kwe AUDIO kusuka ku-MP4 wehora elilodwa?

Umsindo demux + transcode usebenza ngokushesha kakhulu kunakhodi yevidiyo - ngokuvamile 5-15% yesikhathi somthombo. Ihora le-1 MP4 -> AUDIO liphele ngemizuzu engu-3-9 ku-pipeline ejwayelekile. Uma i-AUDIO codec ifana ne-source codec esekwi-MP4 (ejwayelekile ye-AAC ngaphakathi kwe-MKV / MP4), iyi-remux ecacile futhi isebenza ngemizuzu.

Ingabe ihele AUDIO lifaka isihloko / umculi / amathegi we-albhamu?

Uma ihele MP4 ligcina i-stream metadata (umculi, isihloko, i-album), sikopa lezi zindawo kuAUDIO isitoreji lapho ifomu lixhasa amathegi. ID3v2 (MP3), amazwana we-Vorbis (OGG, FLAC), ama-MP4 atoms (AAC / M4A), RIFF INFO (WAV) wonke abhalwe. Ukungabi nathegi MP4 kwenza AUDIO — sebenzisa i-Mp3tag noma i-Picard emva-kwe-ukukhishwa ukuze uthuthukise.

Ingabe MP4 yami imfihlo ngesikhathi sokukhipha umsindo?

Yebo — imodeli yobumfihlo efanayo nezo zonke iziguqulo. Umsuka MP4 nesokudla AUDIO zicutshungulwa kubasebenzi abahlukanisiwe futhi zicishwe ngaphakathi kwemizuzu. Asikwazi ukudlala, ukugcina, noma ukuhlanganisa okuqukethwe. Bona /privacy/.