MKV → WebP

Yebo, futhi kuyindlela elula kakhulu yokuthola isikhathi ofuna. I MKV igcina izihloko eziphawulwe ebhokisini njengeziqephu zesikhathi ezibizwa ngokuthi, ngakho uhlu luyafunda ngokuqondile kusuka kuhele futhi i-in-point ifakwe endaweni yokuqala isikhathi endaweni yokuzama ukubheka. Vumela isikhathi eside futhi kuphela lesi sibalo sizokhishwa, ngakho-ke ubude bokunye kwe-MKV kwenza akukho shintsho ekude kangakanani umsebenzi. I-MKV iyindawo yokugcina ekhethiwe ngoba igcina imisindo engaphelelanga, izihloko ezilula, izihloko eziphawulekayo kanye nezinhlamvu zokufaka isithombe kwifayela elilodwa.

A MKV yi-Matroska-family container, futhi le mindeni igcina ibhokisi ne-codec ngokuhlukile—ihele ligcina lokho okulodwa kwathathwa njengesinqumo lapho libhalwe khona futhi alikho emqoka ngokungeza. Umguquli ufaka ikhodi noma yini etholayo emuva kuma-frames amnyama kuqala, futhi ama-frames afana nanoma iyiphi i-codec eyenza. Ukufaka ikhodi kuthatha imali engafani: ama-codecs amasha, asebenza kahle kakhulu athatha isikhathi eside ukukhishwa kunalawo adala, ngakho amafayela amabili MKV anesikhathi esifanayo angathatha isikhathi esihlukile ukufinyelela ku-WebP. MKV i codec-agnostic: H.264, HEVC, VP9 kanye AV1 ividiyo uhlala ejabulisayo eduze AAC, FLAC, Opus, DTS noma Dolby umsindo kwifayela elifanayo.

Ngenxa yokuthi MKV ayisiqhingi, iziphequluli zidinga ukuxhasa, futhi isakhiwo esiphatha i-container sishintsha kakhulu kunesiqinisekisiwe. Akunashintsho mayelana nokuguquka - ihele liqokwa ikhasimende-ikhasi, ngakho isiqephu esikhohlisa isiphequluli siguqula ngokugcwele njengenye ivumela, futhi akukho bhokisi le-codec elidingayo ukuyisebenzisa lapha. Kubalulekile ukwazi indlela yokuhweba esebenza ngayo, kepha: i-WebP ephilayo ebuyayo iyifomethi yonke isiphequluli esiyinikeza, ngakho lokhu kususa i-clip kusuka kulokho i-web ayizokwazi ukuchofoza kulokho izokwenza. MKV ayikho ingxenyekazi yekhompyutha esemthethweni exhasa i-MKV — amafoni, amabhuleki nama-TV adinga i-VLC noma i-remux ngaphambi kokuba badlala.

Ukulahleka, nganoma yini eqala njengevidiyo. I-WebP ephilayo ingafaka ifreyimu yayo ngendlela eyodwa noma enye: indlela engalahleki igcina wonke ama-pixel futhi ilungele izithombe ezicacile kanye nombhalo we-screen, ngenkathi indlela elahlekile isebenzisa ukubikezela okusekelwe ebhodini lohlobo lwe-codec yevidiyo esebenzisayo futhi ilungele i-footage engokoqobo. Ifreyimu yekhamera igcwele ama-grain ancane ne-gradients ukuthi ukucindezela okungalahleki akutholakali kunoma iyiphi imodeli, ngakho-ke i-animation engalahleki yevidiyo erekhodiwe ingasebenza izikhathi eziningi ubukhulu be-lossy one ebukekayo. Yishiye ilahlekile ngaphandle kokuthi umsuka ube ukurekhodwa kwe-screen kobhalo olucacile. I-WebP ihlala iyisikole sesithathu ngaphandle kwesiphequluli — ukuphrinta komsebenzi, ama-Office adala futhi ezinye izimboni zefoni azikwazi ukuwuvuma.

I-animated WebP isebenza kahle kakhulu kuma-clip angaphansi kwemizuzu engu-10. Ngaphesheya kwalokho ama-balloons wefayela (i-GIF ibalulekile nge-frame ngayinye engacindezelwa). I-animated ede kakhulu idinga i-WebP noma i-APNG esebenza kahle, zombili zisebenzisa ukucindezelwa kwevidiyo-codec-grade futhi zilinganiselwe kahle.

I-GIF ephilayo: 2 kuya ku-8 MB ku-480p ngokuya ngezinkinga zokuhamba. I-WebP ephilayo: 200 KB kuya ku-1 MB ku-resolution / quality efanayo. I-WebP ephilayo i-5 kuya ku-10x ingcono kune-GIF ku-quality ebonakalayo efanayo. I-WebP inikeza izimo ezilahlekile nezingenalahlekile, ngokukhanya kwe-alpha nokubukeka okutholakalayo kunoma yikuphi.

Ngokungajwayelekile sikhuphula isampula ku-15 fps ye-GIF ephilayo (ibhekana nobunzima ngaphezu kuka-25 fps) kanye ne-24 fps ye-WebP / APNG ephilayo (ephatha ama-rate aphezulu ngokucophelela). Nciphisa nge-frame-rate option uma umbukeli wakho uxhasa i-source rate.

Akukho — amafomethi WebP aphilayo (GIF, WebP, APNG) angagcina umsindo. Uma ufuna umsindo, bheka ibhokisi levidiyo (MP4, WebM) endaweni yefomethi yesithombe esiphilayo.

Yebo - isinqumo sokubalwa kwe-loop silawula ukuthi ngabe WebP i-loops iphela (iphutha), idlala izikhathi N, noma idlala ngokugcwele kabili. Ukubalwa kwe-loop kugcinwa ku WebP i-metadata yokuqoqa futhi kuhlonishwa yinoma iyiphi imboniso yamanje.

Izizathu ezimbili ezivamile. Okuqala, ukusatshalaliswa kwefremu-rate: 15 fps WebP kusuka ku-60 fps MKV kususa i-75% yefremu; lungisa nge-frame-rate slider. Okulandelayo, ukusatshalaliswa kwephakeji: i-GIF iphele kuma-256 amamibala futhi i-gradient-heavy MKV i-dithers ngokubonakalayo. Yishintshe ku-WebP ephilayo ukuze kube nombala ogcwele.

Yebo — ukhetho lokushintsha ubukhulu luyinciphisa i MKV ngezansi ngaphambi kokukhipha ifreyimu, okunciphisa kakhulu ubukhulu behele WebP. I-480p WebP kusuka ku-4K MKV incane kakhulu kune-16x 4K WebP. Sebenzisa /video-cutter/ ukugoqa ngenyathelo elilodwa.