Pavel Jelic Kana iwe uri mumwe weavo vashandisi vanofarira kuseta zvigadzirwa zvavo nekufunga kwavo kuitira kuti zvivaenderane nepavanogona napo, saka unogona kunge wakasangana nechikamu cheApple TV. Vhidhiyo uye odhiyo nechinhu Chrome. Neiyi sarudzo, ivo varipo paApple TV sarudzo mbiri, yaunogona kusarudza kubva. Nekudaro, chokwadi ndechekuti vashandisi vakajairwa vasingabatane neruzivo uye, pamwe, vanoratidza matekinoroji, pamwe havazive zvinorehwa neChroma sarudzo uye kuti ndeapi marongero avanofanira kusarudza. Muchikamu chino, ngatitarisei pamwe chete kuti chroma inorevei uye kuti inogona kuiswa kupi mutvOS.
Zvinogona kudaro kufarira iwe
Kubhururuka kutenderera pasirese neApple Chii chinonzi chroma?
Chroma sampling Ndiri mukomana compression, nerubatsiro rwayo kuderedza saizi yeruzivo rwemavara. Chiratidzo chevhidhiyo chakakamurwa kuva zvinhu zviviri zvikuru - ruzivo nezve kupenya (luma) uye ruzivo nezve color (chroma). Information about kupenya (ruminance, abbreviated luma), inotsanangura mwero wekupenya kwechifananidzo chinotapurirwa, uye naizvozvo i musiyano. Luma anotsanangura chikamu chikuru yemufananidzo wose, uye naizvozvo mufananidzo wakasviba-uye-chena hautaridzi zvishoma kudarika ruvara rumwe. Information about color (chrominance, yakapfupikiswa chroma), inoshandiswawo kutapurirana mufananidzo zvakakosha, asi kwete zvakanyanya seluma - kungotaura, chroma ine zvishoma zvinokanganisa pakuonekwa kwechifananidzo. Naizvozvo, panguva yekufambisa kwechifananidzo, iyo inonzi subsampling, naizvozvo kuderedza huwandu hwemashoko emavara anoparadzirwa. Kutenda kune chokwadi chekuti saizi yedhata yeruvara yakaderedzwa yakaderedzwa, zvinokwanisika kuendesa ruzivo rwakawanda nezve kupenya, uye mufananidzo unoguma unogona kupenya maererano ne zviri nani uye zvakanyatsorurama. Panguva imwe chete, ichachengetedzwa mufananidzo kujeka uye panguva imwechete iwe unogona kuderedza saizi yevhidhiyo faira rese kusvika o 50%.
Chroma inotsanangurwa sei?
Setting inowanikwa mukati metvOS 4:2:2 kana 4: 2: 0, zvisinei, zvinofanirwa kucherechedzwa kuti isu tinogonawo kusangana nezvirongwa 4:4:4. Nhamba yekutanga nguva dzose inoratidza mune idzi nhamba dzakatevedzana saizi yemuenzaniso. Next nhamba mbiri vanobva vabatana zvirema. Nhamba mbiri idzi dzine chekuita nekutsanangura nhamba yekutanga horizontal a vertical sampling. Izvi zvinotsanangurwa zviri nani nemuenzaniso. Settings 4:4:4 haishandisi hapana compression, saka hapana undersampling - muchiitiko ichi pane carryover ruzivo rwakakwana pamusoro pekupenya uye ruvara. Settings 4:2:2 wobva watumira hafu ruzivo nezve ruvara - runouya kune horizontal subsampling. 4:2:0 transmits kota ruzivo nezve ruvara, saka se mutsara mumwe ruzivo rwemavara zvachose anopotsa. Kuti tinzwisise zviri nani musoro uyu, gallery pazasi ndima iyi iwe unowana mifananidzo ine chekuita nechroma sampling marongero.
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Iyo indasitiri yemafirimu uye chroma
Sezvo vazhinji vedu tichishandisa Apple TV kunyanya kuona mashowa, isu tichatarisa kuti chroma sampling inobata sei mafirimu, nhevedzano, uye mamwe mavhidhiyo. Iko kushandiswa kwechroma sampling kwakajairika muindasitiri yemafirimu panguva ino 4: 2: 0. Chikonzero chikuru ndechekuti ziso remunhu harina mukana wekusiyanisa pekutanga mutsauko uripo pakati pe4:2:0 na4:4:4, isingashandisi kudzvanyirira. Rini 4:2:0 kunyange zvazvo pane chimwe chinhu kurasikirwa kwemashoko emavara, asi hazvisizvo nezve hapana chakaomarara. Format 4:2:0 zvakare inowanzoshandiswa kune Blu-ray discs uye mune zvimwe zviitiko kana iwe uchida kuve nefirimu mune "yakanakisa" inogoneka mhando. Misiyano pakati pechroma sampling marongero unonyanya kuoneka kana iri pachiratidziro zvinyorwa zviduku. Panyaya ye subsampling, iyo inonzi zvigadzirwa. Unogona kuwana pazasi gallery, umo iwe unogona kuona izvo zvigadzirwa zvakasiyana kune yega fomati.
Maitiro ekuseta Chroma mutvOS?
Mukati meApple TV, tine zvigadziriso zveChroma zviripo mufomati 4:2:0 avo 4: 2: 2, kana yasarudzwa nekusingaperi 4: 2: 0. Sezvo iwe ungadai wakaverenga kubva mumitsetse yakanyorwa pamusoro, iyo 4: 2: 0 fomati ndiyo yakaderera mhando mune iyi kesi, sezvo mune iyo "chete" chikamu chechina chemavara data chinoparidzirwa. Kuseta uku kunosarudzwa zvakanyanya nekuti vanhu vanowanzo shandisa zvakazara tambo dzeHDMI, izvo zvisingagone kubata kutapurirana kwe4: 2: 2 fomati. Iyo 4: 2: 2 fomati saka inofanira kuiswa nevanhu vakadaro vanayo high-speed uye yepamusoro-soro HDMI cable. Kana iwe uchida kushandura Chroma marongero mutvOS, enda ku Zvirongwa -> Vhidhiyo & Audio -> Chroma. Kana iwe ukaedza kuseta iyo fomati 4: 2: 2, saka Apple TV ichakuzivisa iwe uye wobva wamhanyisa bvunzo dzetambo dzako. Kana tambo dzako dzichipfuura, ndizvo zvichaitawo fomati 4:2:2 seti, zvikasadaro zvichavapo kudzorera zvigadziriso zvepakutanga, kuti 4: 2: 0.
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