Thomas Chlebek Pamberi mazuva mashoma Netflix yakazogonesa kurodha zvemukati kuti zvionekwe pasina Indaneti. Chimwe chezvikonzero chikuru nei sarudzo iyi yauya chete ikozvino yakanzi matambudziko ekutsvaga fomu yakakodzera uye mhando.
Matanho maviri emhando yepamusoro anopihwa kurodha - "Standard" uye "Pamusoro". Hazvizivikanwe kuti ndezvipi zvigadziriso uye bitrate zvavanazvo, izvo zvinokonzerwa nekusiyana kwavo maererano nezviri mukati. Netflix yaida kupa iyo yakanakisa chiyero pakati pemhando uye saizi yefaira rakatorwa.
Mhedzisiro ihwo hutano huri nani pahukuru hudiki
Anga achishandisa shanduko yedhata kuyerera kwenguva yakareba, asi aida kuuya neyakatonyanya hupfumi mhinduro yekurodha. Saka, nepo kutenderera kusvika parizvino kwashandisa H.264/AVC Main profile (AVCMain) codec (data compression type), Netflix yenharembozha yakaunza rutsigiro rwevamwe vaviri - H.264/AVC High profile (AVCi) uye VP9, iyo yekutanga iri kushandiswa neIOS zvishandiso uye yechipiri Android mudziyo.
VP9 iri nani maererano nereshiyo pakati pemhando uye data data; asi nepo ichiwanika mahara, Apple haitsigire iyi codec yakagadzirwa neGoogle, uye hairatidzike sekunge ichachinja chero nguva munguva pfupi iri kutevera. Ndosaka Netflix yakasarudza AVHi. Akasarudza kushandisa nzira itsva yekumanikidza data. Izvi zvinosanganisira kuongorora zviratidziro zvemunhu uye kuona kuoma kwemifananidzo yavo (semuenzaniso nzvimbo yakadzikama ine kushoma kwekufamba maringe nechiitiko chine zvinhu zvakawanda zvinofamba).
Sekureva kwake, iyo firimu / nhevedzano inozo "chekwa" muzvikamu zvepakati pemaminitsi matatu pakureba, uye pachikamu chimwe nechimwe sarudzo uye kuyerera kwedata kunodiwa kuti uwane mhando inodiwa inoverengerwa yega. Iyi nzira yakazoshandiswawo kuVP9 codec, uye Netflix inoronga kuishandisa kuraibhurari yayo yakazara uye kuishandisa kwete chete kudhawunirodha, asiwo yekutenderera.
Yakasiyana macodecs uye nzira dzekumanikidza dzine mhedzisiro miviri: kuderedza kuyerera kwedata uchichengetedza mhando yepakutanga, kana kuwedzera kunaka uku uchichengetedza kuyerera kwe data. Kunyanya, mafaera ane chimiro chemufananidzo mumwechete anogona kuda 19% nzvimbo shoma neAVHi codec uye inosvika 35,9% nzvimbo shoma neVP9 codec. Vhidhiyo yemhando ine yakafanana data rwizi (post paNetflix blog inopa muenzaniso we1 Mb/s) ichienzaniswa neAVCMain yakawedzera nemapoinzi manomwe eAVHi zvinoenderana nechiyero chebvunzo. VMAF, neVP9 ipapo nemapoinzi gumi. "Kuwedzera uku kunopa mhando yemifananidzo iri nani yekufambisa nhare," blog inodaro.
