MKV → WebP

Ewe, kwaye yindlela ekhawulezayo yokufumana ixesha ofuna. A MKV igcina iziqendu eziphawulweyo kwisiqulathi seefayili njengeziphawuli zexesha ezibizwa ngokuba zii-timestamps, ngoko uluhlu lunokufundwa ngokuthe ngqo kwifayile kunye ne-in-point ecoliweyo kwindawo yexesha lokuqalisa endaweni yokuqhutywa ngesandla. Nceda unikezele ixesha elifutshane kunye nokuphela kwexesha elifutshane lidecoded, oko kukuthi, ubude becala le MKV yenza akukho tshintsho kwixesha elide lomsebenzi othathayo. I-MKV yindawo yokugcina ekhethiweyo kuba igcina iingoma zesandi ezingaphelelanga, izihloko eziphantsi ezicocekileyo, abaphawuli besiqendu kunye nobugcisa bokuqhoboshela kwifayili enye.

Ayiyo umfanekiso, kuphela ulinde. A MKV yi Matroska- usapho lwesiqulathi seefayili, kwaye elo sapho ligcina isiqulathi seefayili kunye ne codec ngokudibeneyo - into efile igcinayo ngokuqinisekileyo yagqibwa xa yabhalwa kwaye ayibhekiswa kuyo ngesiqendu. Umguquli ukhupha ikhowudi nantoni na efumanayo kwakhona kwiframes ezigqithisileyo kuqala, kwaye ezo Frames zifana nokuba yeyiphi ikhowudi eveliswe ngazo. Ukhupha ikhowudi ixabiso alifani: i-codecs ezitsha, ezisebenzayo zithatha amaxesha amaninzi angaphezulu ukucima ibhokisi kunezinye ezidala, ngoko ii MKV iifayile ezimbini zobude obufanayo zingathatha amaxesha ahlukileyo okuphawuleka ukufezekisa i-WebP efanayo. MKV yi-codec-agnostic: H.264, HEVC, VP9 ne-AV1 ividiyo ihlala ikhululekile ecaleni kwe-AAC, FLAC, Opus, DTS okanye i-Dolby audio kwifayili enye.

Kuba i MKV ayiyiyo ibhokisi yomkhangeli zincwadi abamele baxhase, kwaye isakhiwo esilawulayo sitshintsha kunokuba siqinisekiswe. Ayitshintshanga nto malunga nokuguqulwa - ifayile ikhowudiwe kwicala lomncedisi, ngoko ke ibhokisi yomkhangeli zincwadi ayivumeli ukuguqulwa ngokuchanekileyo njengenye iyamkela, kwaye akukho bhokisi yekhowudi yendawo ifunekayo ukuyisebenzisa apha. Kufanelekile ukwazi indlela yorhwebo oluqhuba ngayo, nangona: i WebP eyenziweyo ebuyela umva yifomati yonke ibhokisi yomkhangeli zincwadi ibonisa, ngoko ke le ihambisa i clip ukusuka kwinto ethe web ayizukuncama into eyenzayo. MKV ayinaso nasiphi na isixhaso sehardware esisemthethweni - iifowuni, iziphene kunye neeTV zihlala zifuna i-VLC okanye i-remux phambi kokuba zidlale.

Ulahleko, nantoni na eyaqala njengevidiyo. I-WebP ephefumlelweyo ingakhowudisa iframes zayo ngayiphi na indlela: indlela engalahlekiyo igcina yonke i-pixel kwaye ilungele imifanekiso ethe tyaba kunye nombhalo wekhusi, ngelixa indlela engalahlekiyo isebenzisa umbono osekelwe kwibloki wohlobo lwe-codec yevidiyo esebenzisayo kwaye ilungele imifanekiso ebonakalayo. Iiframe zekhamera zigcwele i-grain elungileyo kunye ne-gradients apho uxinzelelo olungalahlekiyo lufumana akukho mzobo, ngoko ke uyilo olungenalahleko lomshicileli orekhodiweyo unokusebenza amaxesha amaninzi ubungakanani be-lossy one ebonakala ngathi ifana. Yishiye ilahlekiyo ngaphandle kokuba umthombo wawungurekhodo lwekhusi lombhalo ocacileyo. I-WebP ihlala ikwinqanaba lesithathu ngaphandle komkhangeli zincwadi — ushicilelo lokuhamba komsebenzi, i-Office edala i-Office edala i-Office kunye nezinye ii-galeri zefowuni aziyi kuxhaswa.

I-animated WebP isebenza kakuhle kwiiklipi ezingaphantsi kwee-10 zeesekondi. Ngapha koko iifayili zijikeleza (i-GIF ibalulekile kwi-frame nganye engacinezelwanga). Kwii-animations ezide injongo i-animated WebP okanye APNG, zombini zisebenzisa i-video-codec-grade compression ne-scale engcono kakhulu.

I-GIF ekhoyo: 2 ukuya kwi-8 MB kwi-480p kuxhomekeke kunzima kokuhamba. I-WebP ekhoyo: 200 KB ukuya kwi-1 MB kwisisombululo esifanayo / ubunjani. I-WebP ekhoyo i-5 ukuya kwi-10x ingcono kune-GIF kumgangatho ofanayo wokubona. I-WebP inikezela zombini iimeko ezilahlekileyo nezingalahlekileyo, ngokubonisa ngokucacileyo kwe-alpha noopopayi abafumanekayo kumnye.

Ngokungagqibekanga siyikhupha i-sample ukuya kwi-15 fps ye-GIF ephilileyo (isebenza kakuhle ngaphezulu kwe-25 fps) kunye ne-24 fps ye-WebP / APNG ephilileyo (ephatha i-rate ephezulu ngokucocekileyo). Nciphisa nge-frame-rate option ukuba umbonisi wakho uxhasa i-source rate.

Hayi — iifomati eziboniswayo WebP (GIF, WebP, APNG) azigcinanga isandi. Ukuba ufuna isandi, misela isiqulathi seefayili sevidiyo (MP4, WebM) endaweni yefomati yomfanekiso obonisiweyo.

Ewe - ukhetho lokubala iilophu lulawula ukuba i WebP iilophu iphela (imiselweyo), idlala i-N amaxesha, okanye idlala ngokuchanekileyo kabini. Ubalo lwelophu lugcinwa kwi-WebP i-metadata yesiqulathi seefayili kwaye luhlonishwa ngumbukeli wonke wexesha elidlulileyo.

Izizathu ezimbini eziqhelekileyo. Eyona, ukunyuka kwesampulu ye-frame-rate: 15 fps WebP ukusuka kwi-60 fps MKV ikhupha i-75% ye-frames; lungisa nge-frame-rate slider. Eyona, ukunyuka kwesampulu yengqokelela yezixhobo: i-GIF imiselwe kwimibala engama-256 kunye ne-gradient-heavy MKV dithers ngokubonakalayo. Tshintsha kwi-WebP eyenziweyo yobuxoki obupheleleyo bombala.

Ewe - ukhetho lokuguqula ubungakanani luyikhupha i-MKV ezantsi phambi kokukhupha isakhelo, esenza ukuba ubungakanani befayili bube mkhulu kakhulu. I-480p WebP ukusuka kwi-4K MKV incinci nge-16x kune-4K WebP. Sebenzisa /video-cutter/ ukutywina kwinyathelo elahlukileyo.