Guqula MP4 ukuba MPG

Guqula Eyakho MP4 ukuba MPG amaxwebhu ngokulula

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Iyalayisha

Indlela yokuguqula MP4 ukuba MPG

Inyathelo 1: Layisha eyakho MP4 iifayile usebenzisa iqhosha elingasentla okanye ngokutsala nokuwisa.

Inyathelo lesi-2: Cofa iqhosha elithi 'Guqula' ukuze uqalise ukuguqula.

Inyathelo lesi-3: Khuphela i-converted yakho MPG iifayile

MP4 ukuba MPG Imibuzo Ebuzwa Rhoqo Ngokuguqula

Ndiyiguqula njani ikhowudi i MP4 ukuya kwi MPG ngaphandle kokulimala komgangatho?

Layisha phezulu ifayile yakho MP4 kwaye umguquli wethu usebenzisa i-CRF-based re-encode ebhekisa kwi-visually-lossless MPG output (CRF 18 ngokumiselweyo, ngaphantsi = enkulu / umgangatho ophezulu). I-codec ikhethiwe ukuhambelana ne MPG ibhokisi (H.264 / H.265 / VP9 / AV1 ngokufanelekileyo). I-MPG ifana nenkqubo ye-MPEG ejikelezayo njenge-.mpeg — uluhlu lweeleta ezintathu luyi-DOS-era truncation, hayi ifomati eyahlukileyo.

Yeyiphi i-codec esetyenziswa yi-MPG yemveliso?

Oku kuxhomekeke kwi-container. I-MP4 imiselwe ukuba i-H.264 (uxhaso lokudlala olubanzi); i-MKV ne-WebM imiselwe ukuba i-H.265 ne-VP9 ngokulandelelanayo ukucofa okulungileyo kwi-quality efanayo. Ungacima ukhetho lwe-codec kwizinto ezikhethwayo eziphambili phambi kokuguqula.

Ingaba umculo wam wesandi uya kuqhubeka uguquka MP4 ukuya MPG?

Yes — audio is re-muxed (when MP4 and MPG share an audio codec) or re-encoded to AAC / Opus / Vorbis depending on what the MPG container supports. Multi-track audio (commentary, alternate languages) is preserved.

Ndingagcina i-framerate yokuqala xa ndiguqula i-MP4 iye kwi-MPG?

Ngokungagqibekanga, i-framerate ayitshintshwanga (MP4 24fps ihlala i-24fps kwi MPG). Ukuba ufuna ukuyitshintsha (umzekelo. i-interlaced 29.97 → i-progressive 30fps), sebenzisa ukhetho lwe-framerate, oluphatha 3:2 ukutsala ezantsi nokususa u-interlacing kwindlela efanayo.

Yintoni ubungakanani befayili obuhlukileyo phakathi kwe MP4 ne MPG?

I-codec efanayo ephinda i-muxes (umzekelo MP4 → MPG apho zombini zisebenzisa i-H.264) zivelisa ubungakanani obufanayo. Iinguqulelo ze-codec zingatshintsha ubungakanani ngokumangalisayo: H.264 → H.265 ngokuqhelekileyo iqulethe ifayile kwinqanaba elifanayo lomgangatho obonakalayo; H.264 → VP9 imalunga nokuthelekiswa.

Ingaba ifayili MPG iyadlala kwi-iPhone / Android / Smart TV?

MP4 / H.264 idlala ngokusemthethweni naphi na. MOV / H.264 idlala kwizixhobo zeApple kunye ne-Smart TVs ezininzi kodwa hayi kwi-Android edala. I-MKV ifuna i-VLC kwi-iOS. Iinketho eziphambili ziquka "ukulungelelanisa isixhobo" esimiselweyo esikhetha i-codec ekhuselekileyo / uthelekiso lwesiqulathi seefayili kwisixhobo esithe nkqo.

Ithatha ixesha elingakanani ukutshintsha ifayili ye-1-iyure MP4 ibe yi MPG?

Oku kuxhomekeke kutshintsho lwe-codec. I-codec efanayo yoku-multiply: 30-60 imizuzwana (akukho kuphinda ukukhowude). Ukuphinda ukhowudi kwi-codec eyahlukileyo: ihlala i-0.3-0.7x ixesha lomthombo kwi-GPU yethu ye-pipeline, ngoko ifayile yeyure enye igqiba kwimizuzu engama-18-40.

Yintoni ubukhulu bokubonisa obuxhaswa yi MP4 ukuya kwi MPG?

Ukuza kuthi ga kwi-8K (7680×4320) kwi-Premium. Abasebenzisi abakhululekileyo baphelelwe lixesha kwi-4K (3840×2160) ngomda wobungakanani befayili. I-HDR metadata (HDR10, Dolby Vision) igcinwa apho zombini MP4 ne MPG iziqulathi zigcina ixhaswe.

Ingaba i-MP4 yevidiyo yam ifihlakeleyo ngexesha lokuguqulwa?

Ewe - iifayile zevidiyo ezilayishwe phezulu ziqhutywa ngabasebenza ngokuzimeleyo kwaye zicinywe kwimizuzu embalwa yokugqitywa. Asiboni, singagcina, sigcine, okanye sinikezele ngento equlethe. Bona /privacy/ kwifestile yokugcina i-data epheleleyo.

Ndingazicima okanye ndizimise ngexesha lokuguqulwa kwe MP4 ukuya kwi MPG?

Ayikho kwinyathelo elifanayo — sebenzisa /video-trim/ okanye /video-cutter/ ukucima phambi kokuguqula, emva koko ufolose i MP4 → MPG inyathelo. Ukucima nokutshintsha kwinkqubo ikhawuleza kune-re-encoding ifayile yonke ukujika kuphela.

Kutheni le nto ifayili MPG imnyama / i-pixelated xa kuthelekiswa nomcebo MP4?

I-bitrate-too-low imiselwe rhoqo. Ukunxulumana kwakhona ukusuka kwi-bitrate ephezulu MP4 ukuya kwi-bitrate ephantsi MPG kwi-CRF emiselweyo icindezela kakhulu kwimifanekiso ehambayo. Nciphisa i-CRF ukuya kwi-16-18 (okanye misela i-bitrate ecacileyo) kwaye uphinde uqhube ukubuyisa umgangatho.

Ingaba i-MP4 ukuya kwi-MPG iguqulela ixhasa izihloko ezingaphantsi?

Ewe - iingoma zesicatshulwa esifakiweyo (i-mov_text kwi-MP4, i-SRT/ASS kwi-MKV) zigcinwa xa zombini i MP4 ne MPG iziqulatho zixhasa. Iingoma zesicatshulwa ezitywiniweyo (ezitywiniweyo) zidlulisa ngokuzenzekelayo kuba ziyinxalenye yesakhelo sevidiyo.