MKV → WebP

Yebo, futhi kuyindlela esheshayo yokuthola isikhathi ofuna. I MKV igcina izihloko eziphawulwe ebhokisini njengeziqephu zesikhathi ezibizwa ngegama, ngakho uhlu luyafunda ngokuqondile kusuka kuhele futhi i-in-point ifakwe endaweni yokuqala isikhathi endaweni yokuzama ukubheka. Vumela isikhathi eside futhi kuphela lesi siqephu sizokhishwa, ngakho-ke ubude bokugcina i-MKV akuyona inkinga uma kukhulunywa ngomsebenzi othatha isikhathi eside. I-MKV iyindawo yokugcina ekhethiwe ngoba igcina imisindo engaphelelanga, izihloko ezilula, izihloko eziphawulekayo kanye nezithombe zobuso kwifayela elilodwa.

A MKV yi-Matroska-family container, futhi le mindeni igcina ibhokisi ne-codec ngokuhlukile—ihele ligcina lokho okuhlobene nento ebhalwe futhi alikho emqoka nge-extension. Umguquli ufaka ikhodi noma yini etholayo emuva ku-frames amnyama kuqala, futhi ama-frames afana nanoma iyiphi i-codec ekhiqiza. Ukufaka ikhodi kuthatha imali engafani: ama-codecs amasha, asebenza kahle kakhulu athatha isikhathi eside ukukhishwa kunalawo adala, ngakho-ke 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 efanayo.

Ngenxa yokuthi MKV ayisiyo ibhokisi le-browser, idinga ukuxhaswa, futhi i-build elawula i-browser ishintsha kakhulu kune-garantie. Ishintsha lutho mayelana nokuguqulwa - ihele liqokwa ikhasimende-ikhasi, ngakho-ke ibhokisi le-browser liphoqelela ukushintsha ngokugcwele kanye nelinye livumela, futhi akukho bhokisi le-codec elidingayo ukuyisebenzisa lapha. Kufanele ukwazi ukuthi indlela yokuhweba isebenza kanjani, kepha: i-WebP ephilayo ebuyayo iyifomethi yonke i-browser iyenza, ngakho-ke lokhu kususa i-clip kusuka kulokho i-web ayizokwazi ukuchofoza kulokho izokwenza. MKV ayikho ngaphezu kwe-hardware yendawo yosizo — amafoni, iziphequluli ne TVs ngokuvamile udinga VLC noma 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 i-grain encane 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 kwe-text crisp. 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 kwamasekondi angama-10. Ngaphesheya kwalokhu amafayela aqala ukushaya (i-GIF ivame ukucindezelwa nge-frame ngayinye). Izithombe eziphilayo ezide zidinga i-animated WebP noma i-APNG, zombili zisebenzisa ukucindezelwa kwevidiyo-codec-grade futhi zilinganiselwe kahle kakhulu.

I-GIF ephilayo: 2 kuya ku-8 MB ku-480p ngokuya ngezinkinga zokushayela. I-WebP ephilayo: 200 KB kuya ku-1 MB ku-resolutio / 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 ngokubona ngaphezu kuka-25 fps) kanye no-24 fps ye-WebP / APNG ephilayo (ephatha ama-rate aphezulu ngokuhlanzekile). Nciphisa nge-frame-rate option uma umbukeli wakho uxhasa i-source rate.

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

Yebo - isinqumo sokubala isixhumi silawula ukuthi ngabe WebP sixhuma ngokugcwele (isiphutha), sidlala izikhathi N, noma sidlala ngokugcwele kabili. Ukubalwa kwesixhumi kugcinwa kwi WebP i-metadata yesihlungi futhi kuhlonishwa yinoma iyiphi imboniso yamanje.

Izizathu ezimbili ezivamile. Okuqala, ukuncipha kwesampula yefreyimu-rate: 15 fps WebP kusuka ku-60 fps MKV ikhuphula i-75% yefreyimu; lungisa nge-slider yefreyimu-rate. Okulandelayo, ukulinganiselwa kwephaleti: i-GIF iphele kuma-256 amamibala futhi i-gradient-heavy MKV i-dithers ngokubonakalayo. Tshintsha ku-WebP ephilayo ukuze kube nombala ogcwele.

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