M4V → MP4

Guqula Eyakho M4V kuya MP4 amafayela kalula

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Ukulayisha

Indlela yokuguqula M4V kuya MP4

Isinyathelo 1: Layisha eyakho M4V amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

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

Isinyathelo 3: Landa i-version yakho MP4 amafayela

M4V kuya MP4 Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiyifaka kanjani i-M4V ku-MP4 ngaphandle kokulahlekelwa yikhwalithi yevidiyo?

Ukufaka ifayela lakho M4V futhi hlela Quality to High Quality in the conversion options. That re-encodes the video at the highest quality setting (CRF 18 for H.264 and VP9 output), which keeps the most detail at the cost of a larger file. The default, Balanced, uses the standard setting. The MP4 output gets a codec its container supports: H.264 for MP4, MOV and MKV, VP9 for WebM. Ukuthuthukiswa M4V MP4 - H.264 noma HEVC nge AAC - nge optional Apple FairPlay DRM ne iTunes isiqephu metadata. Kuyinto encane kakhulu ukuthi wonke ama-MP4 aphilayo ayizividiyo ze-H.264 ezinesandi se-AAC; isiqoqi sigcina ngokusemthethweni i-HEVC, AV1 ne-VP9.

Ingabe M4V ingaguqulwa ibe MP4 ngaphandle kokuphinde ubhale kabusha ividiyo?

Hayi, hhayi kule khasi. M4V ne MP4 zihlanganisa isakhiwo esifanayo esingaphansi, kodwa umguquli uphinde uhlanganise ividiyo lezinhlamvu ezimbili endaweni yokukopisha umsinga, ngakho-ke kuthatha isikhathi eside kunalokho okushintshayo kwebhokisi futhi isithombe sicindezelwe futhi. Khetha Ubunjani Obuphezulu ngezansi kweBunjani ukuze ugcine iminingwane eminingi. M4V Apple's uhlobo MP4, esetshenziswa iTunes kanye Apple TV app for movies kanye TV iziqephu. MP4 yi ISO/IEC 14496-14, ejwayelekile ngo-2001 futhi ivela ku-QuickTime box layout MOV isebenzisa.

I M4V yami inezinhlamvu zomsindo eziningi — zingaba zonke zihlala ngaphakathi kwe MP4?

Akunalutho. Umguquli ugcina umsindo owodwa, owenza ama-channels amaningi (okungukuthi, umsindo oyinhloko), futhi ususa okunye; akukho sinqumo sokukhetha okuhlukile. Ukugcina umsindo owodwa, shintsha i-M4V nge-track yokuqala (i-VLC noma i-ffmpeg ingakwenza lokhu), bese uyiguqula. I-M4V igcina izibonisi zesigaba, umsebenzi wobuciko kanye nezingcingo zesihloko esingezansi ngendlela i-Apple TV app elindele ngayo, okujwayelekile MP4 kuvame ukulahlekelwa. I-MP4 isekela kuphela ifomu elilodwa lesihloko esihlonishwa kakhulu (mov_text), futhi umsindo we-multi-track awuthembeki ngaphandle kwama-players wedesktop.

Kungani ihele lami M4V lingakwazi ukushintsha ku MP4?

Kuyinto evamile kakhulu i-DRM. Ezinye M4V izithombe zibhalwe ngokufihlakele ku-bitstream level yisitolo noma isofthiwe eyenza, futhi isithombe esibhalwe ngokufihlakele asikwazi ukucinywa yithu noma yinoma yini ngaphandle kwesitshixo selayisense. Izithombe ongazirekhodile, ozenzayo noma ozibhumele ngaphandle azikhuselwanga ziguqulwa ngokuvamile; ukuthenga okusemthethweni akuzokwenza, futhi akukho oguqulelayo angaba nesiqiniseko sokuthi kungashintshwa. DRM-ikhuselwe M4V ukuthenga ngeke kushintshwe yinoma yini; kuphela M4V izithombe ezingakhuselwanga ziguqulwe, futhi abadlali Apple-ayikho njalo kufanele ubanzi kuthiwa.

Ingabe i-MP4 izodlala kwi-browser uma i-M4V ingadlalanga?

Yebo, futhi lokho kuyisizathu esiphelele sokuguqulwa. I M4V efakwe kwikhasi lewebhu ibonisa umdlali okhubazekile noma icindezela ukulayisha, ngoba iziphequluli azikho izikhombisi ezizo. MP4 idlala ngaphakathi ngengxenye yevidiyo ye-HTML5 engavamile ngaphandle kweplugin noma kusetshenziswa okungaphandle. MP4 yindawo ephephile yokufinyelela ekhona — yonke ifoni, i-browser, i-console, umhleli ne-Smart TV eyenziwe eminyakeni eyisithupha edlule idlala ngaphandle kwesoftware engeziwe.

Yini i-codec yevidiyo i MP4 isebenzisa?

Kuxhomekeka ku MP4 isiqoqi. MP4, MOV kanye MKV output ukusebenzisa H.264, okuyinto idlala ku ngempela wonke ifoni, ibrowser kanye TV. WebM output usebenzisa VP9. AVI, WMV kanye MPEG output ukusebenzisa codecs older labo amafomethi akhiwa.

Ingabe umsindo wami uzophila ukuguqulwa M4V kuya ku MP4?

Yebo, umsindo omkhulu ohambayo udlula, uphinde ukhodwe ku-codec i-MP4 idlala, isibonelo, i-AAC ku-MP4 ne-MOV noma i-Opus ku-WebM. Ukuguqulwa okuningi kugcina kuphela umsindo owodwa (omunye onezintambo eziningi), ngakho-ke izilimi ezihlukile nezibuyekezo zilahlekile. MP4 kuya ku-MOV, ne-AVI, WMV, MPEG, FLV, VOB noma M4V kuya ku-MKV, gcina wonke umsindo ohambayo.

Ingabe ngigcina ifreyimu yesiqalo uma ngiguqula M4V ku MP4?

Yebo. Izinga lefreyimu ligcinwa ngaphandle kokuthi ushintshe: i-24 fps M4V ihlala i-24 fps ku-MP4. Uhlelo lwezinga lefreyimu lingaguqulwa libe yi-60, 30 noma i-24 fps. Lishintsha kuphela inani; alisusanga ividiyo noma lisuse i-3:2 pulldown.

Ingabe ubukhulu behele bushintsha kanjani kusuka ku M4V kuya ku MP4?

Kuxhomekeka kulokho okwenzekayo kuvidiyo. MKV MP4 noma MOV nge default izilungiselelo ikhophi ividiyo umfutho engashintshiwe, ngakho ubukhulu ihlala eduze komthombo. Ezinye izibini eziningi ziphinde zikhophi: a high-bitrate M4V ngokuvamile ephuma ncane, ngenkathi ekhona kakhulu ecindezelwe eyodwa ingakhula. Ifayela elincane ngaphansi Quality inikeza inzuzo encane, futhi H.265 ku Codec isilungiselelo (MP4, MOV ne MKV) ngokuvamile ncane kuna H.264 ku quality efana kodwa idlala ku amadivayisi ambalwa.

Ingabe ihele MP4 lidlalwa ku-iPhone, Android, ne-Smart TVs?

MP4 ne H.264 idlala kunoma iyiphi ifoni, i-browser kanye TV. MOV ne H.264 idlala kunoma iyiphi idivayisi Apple kanye TVs eziningi kodwa hhayi kunoma iyiphi ifoni Android edala. MKV idinga app ezifana VLC ku-iOS, futhi WebM ikhaya e-browsers. Akukho isisetshenziswa preset kule khasi, ngakho khetha ifomu injongo isisetshenziswa sakho sisekela.

Ingabe kuthatha isikhathi esingakanani ukushintsha i-M4V yevidiyo yehora elilodwa ibe yi-MP4?

Akukho isikhathi esiqinile: sixhomekeke kude, isixazululo kanye nefomethi efanelekayo. Ukuguquka kuqhutshwa kumaseva ethu we-CPUs ngesoftware encoders; akukho GPU ukukhawulelwa. MKV kuya MP4 noma MOV ngezinhlelo ezijwayelekile zikopishe umsinga wevidiyo futhi zisheshe. Ukuphinda-ukuguqula ku-H.264 kuthatha isikhathi eside, futhi WebM (VP9) yinjongo ehamba kancane, izikhathi eziningi ezihamba kancane kune-H.264 ezivivinyweni zethu.

Yini isixazululo esiphezulu esixhaswe yi M4V kuya ku MP4?

Umguquli awunakho ubukhulu obuphelele obuphelele; umkhawulo ubukhulu bokufaka obuvunyelwe kuhlelo lwakho, futhi ubukhulu buhlala bukhona uma ungakhethanga 1080p, 720p noma 480p. Akukho HDR ukucubungula noma ukumayelana nombala. Uma ividiyo ikhophiwe (MKV kuya MP4 noma MOV ngezinhlelo ezijwayelekile), HDR10 idlula ngaphandle kokuchofoza. Ukuphinde ubhale kabusha i-HDR10 mastering metadata, futhi ngekhwalithi, ubukhulu noma i-frame rate ilungiselelo ezinye izibini zikhuphula ividiyo kumbala we-8-bit, ngakho-ke i-HDR M4V ingabonakalisa i-washed out.