MP4 → MP2

Guqula Eyakho MP4 kuya MP2 amafayela kalula

Khetha amafayela akho

noma cindezela bese ususa amafayela akho lapha

I-Free Plan: 1 Ukushintsha/ihora · Iya ngaphandle komkhawulo →

Tshintsha amafayela mahhala, Pro abasebenzisi bangaguqula amafayela amakhulu kakhulu; Bhala manje

Ukulayisha

Indlela yokuguqula MP4 kuya MP2

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 MP2 amafayela

MP4 kuya MP2 Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiyikhipha kanjani umsindo kusuka kuhele lami MP4 njenge MP2?

Layisha phezulu ihele MP4 futhi umguquli u-demuxes umsindo, bese uguqula ikhodi liyi MP2. Akukho sinqumo sevidiyo sesibili - umsindo obonakalayo ususwa ngokushesha ngakho ukukhishwa kusheshe kakhulu kunalokho okuphelele kokuphinde ukhodwe. MP4 yi ISO/IEC 14496-14, ejwayelekile ngo-2001 futhi ivela ku-QuickTime box layout MOV isebenzisa. MP2 yi MPEG-1 Audio Layer II, i-layer edlule i-MP3 futhi yabe yi-audio standard ye-DVB ne-DAB broadcasting.

Ingabe ukushintsha MP4 kuya ku MP2 kuyingxenye yesithathu yokucindezela okulahlekile?

Yebo, futhi kufanelekile ukuhlela. Izifomethi zombili ziyi-lossy, ngakho-ke i-MP2 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, ukukopisha i-MP2 kusuka kulo kunciphisa ukudluliswa okuphindiwe ngokuphelele. Kuyinto encane kakhulu ukuthi wonke ama-MP4 aphilayo ayizividiyo ze-H.264 ezinesandi se-AAC; isiqukathi sigcina ngokusemthethweni i-HEVC, AV1 ne-VP9. MP2 ilahlekelwa yinto kodwa isebenzisa isihlungi esilula kunaso iMP3, isebenza nge 192 kuya ku 384 kbps.

Yini i-bitrate yomsindo osetshenziswa yi-MP2 ekhishwayo?

Izinga lokungena elijwayelekile le-lossy MP2 yi-192 kbps, elicacile kumculo. Ungayisusa ku-320 kbps (audiophile) noma 96-128 kbps (ubizo / podcast / ifayela elincane). Izinga lokungena eliphansi livela ezinketho eziphezulu ngaphambi kokuba ucofe uguqule.

Ingabe ngizolahlekelwa ukhwalithi yomsindo uma ngisuka ku MP4 kuya ku MP2?

Uma MP2 ingekho emdlalweni (WAV, FLAC), yonke imibiko igcinwa ngokugcwele. Uma MP2 ingekho emdlalweni (MP3, AAC, OGG, Opus), i MP2 codec icindezela kabusha umsuka womsindo — ku-192 kbps imiphumela icacile kuzo zonke izithako. Ukuya nge-lossy → akukho emdlalweni akusho ukubuyisela imininingwane ekhishwe.

Ingabe i-MP2 yomsindo igcina isilinganiso sosampula sangaphambilini?

Ngokungajwayelekile yebo — umsindo we-48 kHz ku MP4 wakho uhlala u-48 kHz ku-MP2 kuphuma. Ukukhuphula i-CD noma ukuhambisana nomdlali odala ungakhuphula isampula ku-44.1 kHz ngesampula-rate dropdown; isampula ephindayo isezingeni eliphakeme le-SoX.

Ingabe ngingakwazi ukukhishwa umsindo kusuka kuhele MP4 ku MP2 ngeqembu elilodwa?

Yebo — susa ifolda ye MP4 amafayela futhi sizokhipha umsindo ngokuhambisana. Abasebenzisi bepremium bathola abasebenza ngokuhambisana; kuhele olungu-50 lohlelo lokhu kuyinto ehlukile phakathi kwemizuzu emihlanu nemizuzu eyisithupha.

Ingabe i-MP2 izophawulwa ngesihloko / umculi / i-album metadata?

Uma i MP4 ithatha isiqephu noma i-metadata yokuhamba, sikopa isihloko / umculi / ama-album ama-fields ngaphakathi kwe MP2 ibhokisi. Uma kungenjalo, i MP2 iphuma ingaphawuliwe - sebenzisa umhleli wesihloko (Mp3tag, Picard) ngemuva kokuthumela ngaphandle ukuphawula okunethezeka.

Ingabe kuthatha isikhathi esingakanani ukukhishwa kwe-MP2 umsindo kusuka ku-MP4 ohora elilodwa?

Umsindo demux + ukukopela kushesha — 5 kuya ku-15% wesikhathi somthombo. Ihora le-1 MP4 → MP2 liphele ngo-3 kuya ku-9 imizuzu ku-pipeline ejwayelekile; i-premium parallelism isusa lokhu ngaphezu kwemisebenzi yeqembu.

Ingabe ngizokhipha kuphela isigaba se-MP4 somsindo njenge-MP2?

Akukho kulolu thuluzi ngokuqondile — khipha umsindo wonke njenge MP2, bese usebenzisa /audio-trim/ noma /audio-cutter/ ukucisha inhlanganisela. Indlela yezinhlangothi ezimbili ivame ukukhawulela kunemisebenzi ehlangene futhi ikunikeza ukulawula okucacile kwe-waveform-level.

Ingabe ihele lami MP4 liyimfihlo ngesikhathi sokukhipha umsindo?

Yebo - imodeli yobumfihlo efanayo njengezo zonke iziguquko: abasebenza ngokuzimela, akukho ukuhlolwa komuntu, ukususwa okuzenzakalelayo ngaphakathi kwemizuzu yokuqedela. Ifasitela lokugcina eliphelele litholakala ku /privacy/.

Kungani ihele MP2 linezithuba ezingenalutho lapho i MP4 ikhona umsindo?

Kuyinto evamile ukukhethwa kwe-stream engalungile: MP4 inezinhlamvu zomsindo eziningi futhi i-demuxer ikhetha inhlamvu engenalutho noma esizakayo. Sebenzisa isikhethi esithuthukisiwe "i-stream yomsindo" ukukhetha inhlamvu 0, 1, 2 ngokucacile, noma ubeke i MP2 ibhokisi elixhasa i-multi-track output (FLAC, OGG).

Ingabe ngigcina MP2 njenge-stereo, mono, noma 5.1 surround?

Uhlelo lwesixhumi lugcinwa kusuka ku MP4 ngokuzenzakalela — 5.1 MP4 lukhiqiza 5.1 MP2 uma i-MP2 codec isekela lokhu (AAC, FLAC, OGG, Opus). Ukhetho lokuxuba ngezansi lufaka i-stereo noma i-mono — lusetshenziswa kumapodcast asebenza khona lapho amabhayisikobho ajikelezayo elahlekile i-bitrate.