Kodi mtundu woyamba umakhudza zotsatira za kusintha kwa kukula?
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Amachita. MP4 ndi otetezeka kutumiza chidebe: H.264 kanema ndi AAC audio amasewera pa moyenera pa foni, browser ndi TV popanda codec pakiti. Izi ndi zomwe zimasankhidwa ngati kuchepetsa fayilo ndi chinthu chokhacho cha pixels kapenanso chinthu chofufuza chofufuza.
Kodi pali chinachake chokhacho cha MP4 chomwe ndingawone?
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Yes — MP4 amasunga index yake mu moov atomu, kotero stream-kopera kusintha ndi pafupi-mphindi ndi zotsatirabe akufuna bwinobwino mu msakatuli. Kuyenera kutsimikiziridwa kuti mubwezeretse fayilo yomwe simungathe kubwezeretsa.
Kodi ndi chiyani cholakwika chofala kwambiri pamene mukusintha kukula kwa MP4 videos?
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Upscaling. Kukula sikungayambitse mfundo zosadziwika zomwe sizikuwonetsedwa, choncho zotsatira zake ndi mtundu wolimba wa mtundu woyamba ndi kukula kwakukulu. Kawirikawiri, sinthani kukula kwa chithunzicho kuchokera pazomwe muli nazo, ndipo sinthani kukula kwake kamodzi kokha, osati m'madera.
Kodi Kusintha kwa MP4 imasintha bwanji ma dimensions?
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Concretely, ma frame amasinthidwa ndi chinyezi chokoma kwambiri ndipo ma stream amasinthidwanso, chifukwa chidaliro ndi chinthu cha chithunzi chosinthidwa; kusiyana kwa ma aspect amabwezeretsedwa ngati simukufuna kuchotsa. You give it a target width, a target height or a percentage, and it works from the original rather than from a previously resized copy.
Kodi ndingagwiritse ntchito Kusintha kwa MP4 pa MP4 videos angapo nthawi imodzi?
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Yai. Uploads queue m'njira yofanana, zomwe zikutanthauza zambiri pano kuposa kulikonse chifukwa ntchito za video ndi mphindi kuposa masekondi. Maakaunti aulere amayendetsa fayilo imodzi nthawi imodzi; chilolezo chimatulutsacho.
Kodi chimachitika chiyani kwa nyimbo za audio, subtitle ndi chapter?
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Audio yambiri, ma subtitle ophatikizidwa ndi masamba olemba masamba amapulumuka komweko komwe konkriti yoyenera imatha kuwaimira - zomwe ndizomwe zimatenga ntchito yabwino kuchokera ku naive re-encode yomwe imasungabe njira imodzi.
Kodi pali malire a kukula kwa fayilo pa Kusintha kwa MP4?
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Yai: maakaunti aulere amapanga kanema mpaka ku 40 MB pa fayilo, mosakayikira chingwe choyamba patsambali; ffmpeg ndi x264, x265 ndi libvpx amachita ntchito, yomwe ndi imodzi mwazinthu zofanana ndi mapulogalamu a desktop video.Video ndi banja limodzi lomwe limakhala lokwanira kwambiri kuti likhale ndi nthawi yotsitsa, osati malire, ndi zomwe mudzawona.
Kodi Kusintha kwa MP4 idzachepetsa mtundu wa MP4 videos wanga?
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Kutengera ngati ntchitoyo ikufuna kusinthidwanso. Machitidwe omwe amakhudzanso chidebe kapena nthawi yoyamba amachitika ngati kopanira kwa stream ndipo chithunzicho ndi chofanana ndi chochokera. Chomwecho chomwe chiyenera kujambulanso ma frame amapita ku x264 / x265 pamalingaliro oyenera omwe mwasankha, komwe CRF 23 ndi yowoneka bwino pazinthu zambiri.
Nchifukwa chiyani malo a Word amalandira Kusintha kwa MP4?
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WORD.to imapangidwa m'mbali mwa mapeto osinthika a moyo wa deta - DOCX yomwe ikukula, ikukula ndi kuyankhulana, pambuyo poti aliyense amadula kuti atumizire. Mafayilo a Office ndi ma containers okwanira a anthu ena - zithunzi, zophatikizika za audio, mafonti - kotero ntchito zomwe anthu akufuna pawo nthawi zambiri ndi ntchito zomwe angafune pazomwe zilipo. Kusintha kwa MP4 amagawana kutsitsa, ma caps ndi akaunti ndi kusintha kwachifukwa chake.
Kodi ndingachite chiyani ndi zotsatirazi pamene Kusintha kwa MP4 yatha?
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Wosintha patsamba lino amatenga zidziwitso ku PDF kuti atumizire, ku zithunzi zophatikizira ndi kulemba kokha kwa chilichonse chomwe chili ndi kuphunzira kwa iwo mwanjira ya programmatic, ndi kumbuyo. Kuchita izi pambuyo pake kumasunga mtundu wosinthika wamtunduwu, womwe ndi gawo lomwe simungathe kubwezeretsa pamene idakonzedwa.
Kodi Kusintha kwa MP4 pano ndi chinthu chomwecho chomwe masamba a sibling amayendetsa?
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Ma injini amagawana - mndandanda wazolemba zomwezo, ogwira ntchito omwewo, zoletsa zomwezo. Zomwe Word zimawonjezera ndi zomwe zimawoneka kuti zimasiya mtundu wa Office ndi zomwe sizimachita, zomwe ndi mafunso omwe amafunsira ntchito iliyonse. Amayambanso kuchokera ku chinthu chimodzi cha mtundu womwe umatchedwa izi: fayilo ndi zip ya XML, kotero kusintha kwa malemba ndi ochepa ndipo kunenepa kwambiri ndi pafupifupi nthawi zonse zithunzi zophatikizidwa.
Kodi ndiyenera kukhala ndi akaunti, ndipo kodi zinthu zina zimasunga?
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Sichingakhale akaunti, ndipo palibe chomwe chimaperekedwa: kutsitsa kumachotsa ntchito za ogwira ntchito pambuyo pomaliza ntchito, palibe chomwe chimawerengedwa komanso palibe chomwe chimawerengedwa. Maakaunti aulere alipo kwa mbiri ndi kukula kwa batani, sichipezeka.
