Key Takeaways
- HDR sawv rau High Dynamic Range.
- Dolby Vision ntau dua lossis tsawg dua ib yam li HDR10, tsuas yog ntse dua txog qhov nws ntes.
- iPhones, thiab ntau lub xov tooj Android, nrog OLED cov ntxaij vab tshaus txhawb HDR playback.
YouTube's iPhone app tam sim no txhawb HDR yees duab, yog li koj yuav tau txais cov xim dub thiab ci dua thaum saib video ntawm iPhone 12. Tab sis HDR yog dab tsi? Puas tsim nyog paub txog? Thiab dab tsi apps txhawb nws?
HDR sawv rau High Dynamic Range, tab sis nws tsis muaj dab tsi cuam tshuam nrog cov duab zoo nkauj zoo nkauj ntawm tib lub npe. Nws yog ib txoj hauv kev los ntes ntau yam ntawm lub teeb (thiab tsaus), thiab tom qab ntawd ua si rov qab. Nws muaj nyob rau ntawm HDR TVs, tab sis yog ib qho kev siv tshuab tshiab rau cov khoom siv txawb. Tam sim no, nws muaj nyob rau hauv iOS no YouTube app, tab sis muaj lwm yam apps uas txhawb nws, ib yam nkaus.
"Yog tias koj yog tus tsim tawm, HDR video tuaj yeem txhawb koj txoj haujlwm vim tias nws tsuas yog ci dua thiab muaj xim ntau dua li cov yeeb yaj kiab txheem," sau Engadget's Steve Dent, piav qhia txog HDR project. "Cov txiaj ntsig muaj txiaj ntsig ntau dua 4K, uas tsuas yog xa cov kev daws teeb meem ntxiv uas ntau tus neeg tsis tuaj yeem pom."
Saib Ntxiv Nrog HDR
Yog tias koj lub xov tooj lossis ntsiav tshuaj muaj lub vijtsam OLED, ces tej zaum nws yuav txhawb nqa HDR video. Qhov ntawd yog vim OLED muaj ntau yam zoo dua li cov ntxaij vab tshaus LCD. LED vaj huam sib luag muaj lub vaj huam sib luag ib txwm nyob tom qab kab sib chaws ntawm LCD pixels. Cov pixels lawv tus kheej tsis muaj dab tsi tab sis xim lim. Yog tias cov pixels no raug kaw, lawv thaiv lub teeb, ua-supposedly-dub. Tab sis lub teeb ib txwm los ntshav ncig ntawm ntug, lossis dhau ntawm cov pixels, ua rau nws tsawg dua li tag nrho cov xim dub.
OLED tshem tawm nrog lub teeb nraub qaum. Txhua tus pixel tsim nws tus kheej lub teeb, thiab thaum nws raug kaw, nws tawm. Qhov no txhais tau hais tias dub ntawm ib qho screen OLED tsis yog tsuas yog dub dua, tab sis kuj siv tsawg zog.
Ntawm iOS, koj tuaj yeem saib HDR video ntawm iPhone X thiab XS, iPhone 11 Pro, thiab txhua tus qauv iPhone 12. Tsis muaj iPads muaj OLED cov ntxaij vab tshaus, thiab cov high-end Androids tsis ntev los no muaj OLEDs. Koj yuav tsum tshawb xyuas cov tuam txhab specs kom paub.
HDR Apps
Txhawm rau saib HDR cov yeeb yaj kiab hauv YouTube app, tsuas yog coj mus rhaub peb lub cim kab ntsug nyob rau sab xis ntawm lub app. Qhov no qhib qhov chaw streaming video, thiab koj tuaj yeem pom yog tias muaj HDR version ntawm cov yees duab muaj. Ob peb qhov kev daws teeb meem yuav raug teev-1080p60HDR, piv txwv li-yog li xaiv qhov koj xav tau.
Muaj lwm cov apps uas txhawb HDR playback, ib yam nkaus. Ib qho yog Apple's video-editing app, Clips, uas kuj kaw hauv HDR. Lwm qhov kev xaiv zoo yog Infuse, yog ib qho zoo tshaj plaws video-saib apps ntawm iOS thiab Apple TV. Infuse cia li txhawb nqa HDR yees duab sai li sai tau thaum koj ua nws rov qab, tsuav yog koj lub cuab yeej txhawb nqa nws.
Recording HDR Dolby Vision
Thaum kawg, koj tuaj yeem kaw koj tus kheej HDR video. Lub iPhone 12 tuaj yeem ntes HDR yees duab nrog Dolby Vision, txhais tau tias nws qhov ci ci ntau ntawm cov yeeb yaj kiab tau hloov pauv.
Piv txwv li, yog tias koj nyob sab hauv thaum yav tsaus ntuj, qhov ntau ntawm cov teeb pom kev zoo yuav khiav los ntawm qhov tsaus ntuj tshaj plaws ntawm koj chav mus rau qhov tseem ceeb-lit-dim qhov chaw ntawm chav. Txav mus rau sab nraud thaum nruab hnub, thiab qhov hloov pauv, nws dav dua. Dolby Vision qhov kom zoo dua yog nws tuaj yeem hloov kho rau cov kev hloov pauv no ntawm qhov xwm txheej-los-scene lossis ncej-los ntawm-nruab nrab, tsis yog qhov nruab nrab ntawm tag nrho cov yeeb yaj kiab.
Thiab, tau kawg, txhua qhov HDR video uas koj tua koj tus kheej tuaj yeem rov ua dua (thiab txawm tias kho) hauv Cov Duab app.
HDR tej zaum yuav zoo li gimmicky tam sim no, tshwj xeeb tshaj yog hauv xov tooj, tab sis nws tsuas yog lwm qhov piv txwv ntawm kev txhim kho tas li rau cov duab thiab yeeb yaj kiab ntawm peb lub xov tooj. "Kev kaw ncaj qha hauv Dolby Vision yog qhov ua tau zoo tshaj plaws uas paub tseeb tias yuav tau txhim kho nyob rau hauv iPhones ua tiav," sau Joseph Keller ntawm iMore.
Thaum koj rov qab saib koj cov yeeb yaj kiab hauv tsev xyoo txij li tam sim no, koj yuav zoo siab koj tau ntes cov yeeb yaj kiab zoo tshaj plaws tau.
