MKV → WebP

Ewe, kwaye yindlela ekhawulezayo yokufumana ixesha ofuna. I 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 lokuqala 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 bokuqhobosha kwifayili enye.

Ayiyiyo imifanekiso, kuphela ulinde. A MKV yi Matroska- usapho lwesiqulathi seefayili, kwaye elo sapho ligcina isiqulathi seefayili kunye ne codec ngokudibeneyo - into efile igcina ngokuqinisekileyo yagqibwa xa yabhalwa kwaye ayibhekiswa kuyo ngesiqendu. Umguquli uguqula uguqulo oluthile kwifomathi eyenziweyo kuqala, kwaye ezo fayile zifana nokuba yeyiphi ifomathi eyenziweyo. Ukuguqula uguqulo luthile kubiza kakhulu: i-codecs ezitsha, ezisebenzayo zithatha ixesha elide lokususa ibhokisi kunezo zakudala, ngoko ii MKV iifayile ezimbini zobude obufanayo zingathatha ixesha elihlukileyo lokufikelela kwi-WebP efanayo. I-MKV ayisebenzisi i-codec: H.264, HEVC, VP9 ne-AV1 ividiyo ihlala ikhululekile ecaleni kwe-AAC, FLAC, Opus, DTS okanye i-Dolby audio kwifayili enye.

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

Ilahlekile, 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 lufumananga umzobo, ngoko ke ubugcisa olungalahlekiyo lweclip erekhodiweyo luya kusebenza amaxesha amaninzi ubungakanani be-lossy one ebonakala ngathi ifana. Yishiye ilahlekile 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 kwii-clip ezingaphantsi kwee-seconds ezili-10. Kungaphezulu kwee-balloons zefayili (i-GIF ibalulekile kwi-frame nganye engacinezelwanga). Kwi-animations ezide injongo i-animated WebP okanye APNG, zombini zisebenzisa i-video-codec-grade compression ne-scale kakhulu.

I-GIF ephefumlelweyo: 2 ukuya 8 MB kwi-480p kuxhomekeke kunzima kokuhamba. I-WebP ephefumlelweyo: 200 KB ukuya kwi-1 MB kwi-resolution / umgangatho ofanayo. I-WebP ephefumlelweyo 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-15fps ye-GIF ejikelezayo (isebenza ngokubonakalayo ngaphezulu kwe-25fps) kunye ne-24fps ye-WebP / APNG ejikelezayo (ephatha i-rate ephezulu ngokucocekileyo). Nciphisa ngokugqithiseleyo nge-frame-rate option ukuba umbonisi wakho uxhasa i-source rate.

Hayi — iifomati WebP eziphilayo (i-GIF, i-WebP, i-APNG) azigcinwanga isandi. Ukuba ufuna isandi, misela isiqulathi sevidiyo (i-MP4, i-WebM) endaweni yefomati yomfanekiso ophilayo.

Ewe - ukhetho lokubala iilophu lulawula ukuba i WebP iilophu liphela (elimiselweyo), idlala i-N amaxesha, okanye idlala ngokuchanekileyo kabini. Ubalo lwelophu lugcinwa kwi WebP i-metadata yesiqulathi seefayili kwaye luhlolwe ngazo zonke izibonisi zexesha elidlulileyo.

Izizathu ezimbini eziqhelekileyo. Eyona, i-frame-rate downsampling: 15 fps WebP ukusuka kwi-60 fps MKV ikhupha i-75% ye-frames; ilungisa nge-frame-rate slider. Eyona, i-palette quantification: i-GIF imiselwe kwimibala emi-256 kunye ne-gradient-heavy MKV dithers ebonakalayo. Tshintsha kwi-WebP ejikelezayo yobuxoki bombala opheleleyo.

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