M4V Zvishandiso

Chinja M4V kuenda uye kubva kune akasiyana mafomati

Nezvedu M4V

M4V imhando yefaira revhidhiyo rakagadzirwa neApple. Yakafanana neMP4 uye inowanzoshandiswa pakutamba kwevhidhiyo paApple madivayiri.

Mashandisirwo Akajairika

iTunes video
Apple TV content
Protected video

M4V Mibvunzo Inowanzo bvunzwa Nezvekuchinja

Chii chinonzi M4V video faira?

M4V ndicho Apple's QuickTime chigadzirwa. iPhones, iPads uye Macs vanorekodha mavhidhiyo muM4V ne default. The format inotsigira H.264, HEVC, ProRes, akawanda audio tracks, subtitles uye chapter markers. M4V inoita kuti nyaya irambe ichiratidza zviratidzo, mavara uye zvinyorwa zvemazita mumhando yeApple TV app inotarisira, iyo MP4 inowanzo shaya.

Ndeipi faira ye M4V imwechete seMP4 pasi pezvo?

M4V yakagadzirwa kubva kune imwe ISO Base Media File Format box layout MP4 inoshandisa - mutsara weatoms unobata media data pamwe neindex iyo inoti iyo yega yega frame inotanga. Izvi ndizvo zvinoita kuti kushandura pakati pavo kuve kudzokororwa kupfuura kudzokororwa: ma streams akakopwa pasi pekusingaperi uye chete wrapper yakanyorwazve, iyo inotora masekondi kunyangwe pafile ine hunhu hwekukura. M4V ndiro Apple's chimiro cheMP4, anoshandiswa ne iTunes uye Apple TV app for movies and TV episodes.

Nei kutenga kunobva se M4V?

Nekuti format iri kutengesa kwavo kutumira wrapper, akazvimirira kune yake apps uye, yezvinyorwa zvakabhadharwa, kune yako account. That is what makes it convenient inside that ecosystem and awkward outside it. Files that are not account-locked convert normally; protected ones cannot be opened by any converter, which is a deliberate property of the format rather than a limitation here.

I M4V imwechete format seimwe yekuwedzera?

Yeah.

Nei browser yangu isina kutamba faira M4V?

Mabrowser anotumira decoders kune yakajairika yakaderera runyorwa rwemafomati, uye M4V haasi pazvo - kupihwa mvumo, mhando yecodec inokutendera, kana chete makore ayo anoichengeta kunze. Faira harisi kukuvadzwa uye desktop player ichaivhura, asi hapana chinhu chaunoita kune peji ichaita kuti mubrowser iite. Kushandura kune web-native container ndiyo chete nzira inonzwisisika yekutamba mumisoro. DRM-inodzivirira M4V kutengesa haasi kuchinjaniswa nechimwe chinhu; chete unprotected M4V mafaera vari convertible, uye kwete-Apple vatambi kazhinji vanofanira kuchinja zita rezvirongwa.

I M4V ichatamba pafoni kana TV pasina kusvibisa bhatiri?

Muchokwadi, zvirizvo, nekuti machip mufoni, matablets, uye matelevhizheni anodecode izvi zvakasiyana-siyana zvepamberi muzvigadzirwa zvavo musilicon, kwete pakutanga processor. Izvi ndizvo zvinosiyana pakati pevhidhiyo iyo inotamba zvakachena kwemazuva maviri neimwe iyo inopisa chigadzirwa ichi uye inodziya ichi muminutu makumi maviri. Mumwe mufananidzo unodzikira ndewekuti app inotsigira asi haisi decoding — codec inoshamisa, wrapper inoita kuti gallery app irege. Structurally M4V ndiro MP4 — H.264 kana HEVC neAAC — nesarudzo Apple FairPlay DRM uye iTunes chitsauko metadata.

Iri M4V ichivharwa?

Hachisi chinhu chinoenda kusvikira zvapera, asi huwandu hwemafaira matsva huchiramba huchidzikira uye maturusi matsva anenge asiri akawanda anoramba achizvitsigira. Mafaira aripo acharamba achigona kunyorwa kwenguva yakareba. Kuita kuti archive irambe iri mune iyi fomati kunoita kuti zvive nyore, asi kuvhura imwe nyowani yekushanda munzira inoreva kubvuma kuiswa kwesoftware yakaoma.

Ndeapi mazita ezita mukati me M4V anogona kusarudzwa, kana akasvibiswa muvhidhiyo?

Kusarudza, kana vakawedzerwa zvakanaka. M4V inotakura zvinyorwa sezvavo zvemukati pamwe nevhidhiyo, kuitira kuti muverengi agone kuchinja matauro, kudzima, kana kushandura iwo mumutambo unotsigira. Kupisa-muzvinyorwa zvakare zvinokwanisika - ivo chete pixels muframe - asi ivo vanogara, uye hapana nguva dzose chikonzero chekusarudza ivo kana chikonzero chinotsigira chinhu chakanaka.

Nei M4V kushandura kune imwe video format?

Convert M4V kuti MP4 kana iwe uchida Universal kutamba - web browsers, Mobile zviwanikwa, smart TVs uye kushandura apps vese kutamba MP4 natively. Convert to WebM for web embedding where smaller file size matters. Convert to MOV kana uchishanda mu Final Cut kana mamwe Apple-native pipelines.

M4V kuchinja anopa re-encode video?

Kana iyo source codec mukati M4V inoenderana neyakatarwa chigaro isu remux pasina re-encoding (rapid, lossless). Kana iyo codec inofanirwa kuchinja (semuenzaniso HEVC kune H.264) iyo video inowanzo re-encoded - yakaderera, ine yakaderera generational quality cost.