Yuav ua li cas yog nws: HEVC? Ntsiab nta ntawm lub tshiab codec

Raws li koj paub, peb tag nrho cov nyiam saib movies, yeeb yaj duab los yog cov hloov nyob rau hauv zoo zoo. Tab sis nyob rau hauv cov nqe lus ntawm video cia rau ib tug computer ntau teeb meem feem ntau txuam nrog rau banal tsis muaj qhov chaw. Kuj nyuam qhuav ib tug tshiab qauv, thiab ntau cov neeg siv tam sim ntawd cia li sawv lub ntuj lo lus nug: "Yuav ua li cas yog qhov no - HEVC?». Xav txog ob peb yam yooj yim sib nrauj muaj feem xyuam rau qhov kev siv thiab ua daim ntawv thov ntawm tus tshiab codec.

Yuav ua li cas yog nws: HEVC

Yog hais tias peb tham txog movies uas kaw rau lub tshem tawm, feem ntau cov loj ntawm ib tug disk muaj feem xyuam rau cov kev xaiv ntawm cov qauv ntawm cov video compression. Cov tib Blu-duab tshav-discs yuav cia movies nyob rau hauv siab txhais volume ntawm ntau tshaj 25 GB. Tab sis, koj pom, kom ib tug zaj duab xis nyob rau hauv koj nyuaj tsav, tshwj xeeb tshaj yog thaum nws muaj peev xwm yog kom meej meej tas, los ntawm ib tug tswv yim taw tes ntawm view yog lig tsis tsim nyog.

Rau lub hom phiaj no, lub cai clips, uas txawm tsis muaj compromising rau zoo los txo qhov loj ntawm lub kawg ntaub ntawv los ntawm tshwj xeeb compression txoj kev. Tab sis nyob rau hauv kev xyaum, yog dab tsi? HEVC yog nyob deb ntawm cov feem ntau tshaj codec, nws yuav tsum hais tias, txawm tias ib tug kiv puag ncig nyob rau hauv lub teb ntawm video. Tab sis dab tsi tsis nplua lovers ntawm qub high-quality video codec H.264?

High Efficiency Video Coding: coding qhia

Ua li no, xa mus rau qhov kev nkag siab ntawm cov kev qhia tswj ntawm lub teeb liab coding. Lub fact tias muaj yog ib tug ntawm cov cwj pwm tseem ceeb yog ua si los ntawm kev siv cov coob block. Rau H.264, yog ib tug 16 x 16, los yog ib tug tag nrho ntawm 256 pixels.

Rau tus txheej txheem tshiab H.265 xws li ib tug tiv thaiv yuav ua tau 16 lub sij hawm ntau! Thiab yog hais tias peb coj mus rau hauv tus account lub technology changeable blocks thaum lub thaiv loj yog absorbed ncaj qha los ntawm lub algorithm nyob rau hauv lub compression txheej txheem, nws yog ib qho yooj yim mus pom hais tias tus tshiab codec yog hais tias, feem ntau "tiv thaiv" mus rau lub siab daws teeb meem thiab rau hnub tim txhawb txawm 8 k (8192 x 4320 pixels ). Koj muaj peev xwm ntxiv no kuj tib cai muaj nuj nqi. Yog li, HEVC codec uas muaj cov duab zoo yuav txo tau lub ntsis nqi, thiab raws li, cov ntaub ntawv loj. Chaw txuag nyob rau hauv kev sib piv nrog rau cov H.264 txheem yuav ncav cuag 25-50%!

Kev them nyiaj yug rau 4 k thiab 8 k: yuav ua li cas zoo yog nws

Raws li rau cov hauj lwm zoo ntawm xws li ib tug codec, nyob rau kaj ntug ntawm nws tsos, nws tsis yeej ib tug tshwj xeeb chaw. Nws twb kev cob cog rua nrog lub fact tias cov nyiaj them yug ntawm tus txheej txheem tshiab yuav muab tsuas cov feem ntau haib thiab niaj hnub graphics chips GeForce 970 los yog 980.

Ua tau, lub sij encoding txheej txheem nyob rau lwm lub tsis haib li yuav siv sij hawm txog 10-12 teev. Yog li, los ntawm lub tswv yim taw tes ntawm view, tus txheej txheem tshiab lawm unprofitable.

Thaum lub sij hawm, qhov teeb meem no tau hloov, thiab tam sim no nyob rau hauv lub hauv paus ntawm H.265 technology yog pib yuav tsum tau ua ntawv thov universally. Nyob rau hauv cov nqe lus ntawm qhov chaw txuag nyob rau hauv kev sib piv nrog H.264 yuav txo tau txaus eloquent piv txwv. Thaum ib tug daws teeb meem ntawm 720p qhia saving yog hais txog 25%, thiab nrog rau cov proviso zoo 4 k - ntau tshaj 50%. Los ntawm txoj kev, Yog hais tias koj siv cov dua Blu-duab tshav-disc, qhov luaj li cas ntawm cov thawj video yuav txo tau yuav luag 10 lub sij hawm (nws yuav "luj ib tug me ntsis ntau tshaj 3 GB)!

Major nrhav

Yog hais tias koj saib nyob rau ib co ntawm cov nrhav, xws li txhua yam uas yog nyob rau hauv cov kev cai rau lub tshiab codec yog cov nram no:

• Kev pab txhawb nqa profiles 8 thiab 10 cov khoom (nyob rau hauv lub neej yav tom ntej - 12 khoom);
• lub xub ntiag ntawm ob-dimensional separable, inseparable thiab qhia asf interpolation cov ntxaij lim dej;
• tsab ntawv tsa suab nyiaj yog tsis pub dhau 1/8 ntawm ib tug pixel;
• Kev siv lub system ntawm adaptive twv ua ntej kom raug thiab xaiv matrices nyob rau hauv lub coding txheej txheem;
• Comparative muaj tsab ntawv tsa suab vector coding Circuit Court;
• tsoom fwv-dependent intra-ncej coding.

Ntawm cov hoob kawm, koj muaj peev xwm ntxiv rau daim ntawv teev nyob rau hauv lub neej yav tom ntej. Txawm li cas los, txawm cov nuj nqis yog tej kev nyuaj siab nrog video encoding, yuav hais tias ib tug ntau.

Yuav ua li cas software yog siv rau menyuam tsos nyob rau hauv ib tug tshiab hom

Yog li ntawd, los ntawm lub codec to taub. Yuav ua li cas yog nws (HEVC), kuv xav tias nws yog ib tug me ntsis kom nkag siab. Peb tam sim no tig mus rau feem ntau pressing teeb meem uas yuav muaj tseeb nyiam feem ntau ntawm cov neeg siv. Yuav ua li cas siv los saib video encoded nrog cov tshiab algorithms?

Nyob rau hauv hauv paus ntsiab lus, nyob rau hauv nws nyuaj daim ntawv no, koj yuav siv tau cov software players. Ib qho ntawm feem nthuav, raws li muaj ntau yam, yog ib tug tshwj xeeb thiab narrowly focused daim ntawv thov Daum PotPlayer. Yog hais tias koj yuav xum tsis yuav, koj yuav siv tau qhov nrov VLC Media neeg uas ua ntawv, tsuas yog nws yog tsim nyog rau nruab qhov tseeb version, raws li tsuas yog nws muaj ib tug built-in kev pab txhawb nqa HEVC.

Txawm li cas los, txawm tag nrho cov zoo, nws yog ua tau rau koj nco ntsoov ib tug ntau ntawm teeb meem. Rau feem ntau feem, nws yog hais txog tsuas rau lub fact tias tam sim no koj yuav nrhiav tau nyob rau hauv Internet tsis yog li ntawd ntau npaum li cas ib tug yeeb yam los yog video encoded siv cov tshiab algorithm. Yuav ua li cas yog txawm ntau distressing yog tus tsis muaj kev pab los ntawm tus neeg muag khoom. Yog hais tias lub software teeb meem tau cas solved, lub tsev tsev ua yeeb los yog ntse TV manufacturers yog nyob rau hauv tsis tsuag tsuag kom txawj tso zis nrog H.265 them nyiaj yug. Yog, thiab cov codec, tab sis yog nws yog suav tias yog revolutionary, tseem tshwj xeeb faib twb tsis tau tau txais. Tab sis kuv cia siab hais tias qhov no yog ib tug ib ntus tshwm sim.

es tsis txhob tshwm sim

Ntawm no yog ib nyuag thiab tag nrho cov uas koom rau tus txheej txheem tshiab nyob rau hauv video encoding. Ntawm cov hoob kawm, muaj tau cuam tshuam, tsis yog txhua txhua kev sib nrauj ntawm lub tshiab technology, tab sis txawm qhov nyuag ntaub ntawv yuav pab cov neeg siv kos ib xaus txog cov loj nrhav, lub advisability ntawm kev siv thiab ua daim ntawv thov ntawm cov technologies. Tab sis los ntawm thiab loj, lawv yuav tig tag nrho peb cov notions hais txog qhov zoo thiab ua cov video ntaub ntawv. Thiab, Thaj, tsis ntev outdated H.264 txheem yuav mus rau hauv oblivion, vim hais tias cov technology tsis sawv tseem. Yog hais tias koj noj dogosrochnuyu foundations, nws yuav zoo heev yog hais tias es tsis txhob ntawm HEVC codec yuav tsim ib yam dab tsi txawm ntau haib.