Yuav ua li cas yog ib tug codec thiab dab tsi yog lawv rau?

Nyob rau hauv Internet koj tau feem ntau nrhiav tau cov lus nug "li cas codecs". Yuav kom teb tau nws, cia peb nco ntsoov lub encoding ntawm cov ntaub ntawv.

Txhua yam ntawm peb tsawg kawg ib zaug pom lub video on koj lub computer, mobile ntaus ntawv los yog suab paj nruag neeg uas ua ntawv. Thiab mloog suab lem los ua muaj ntau heev uas tam sim no, tawm mus rau hauv txoj kev ntawm lub nroog, nws yog ib qhov nyuaj tsis kom tau raws li ib tug neeg nrog headphones. Nyob rau tib lub ob peb tus neeg xav txog cov neeg suav uas tau ua raws li lub hauv paus processor thiab graphics card, npaj cov duab los yog lub suab. Nws yuav zoo li uas tej suav? Cov tib daig kab players tsis muaj processors (tsis xws li tshwj xeeb), remarkably coped nrog lawv paub tab. Txawm li cas los, xws li ib tug sib piv tsis yog lawm, txij li thaum ntaub ntawv txhua txhua yog yus tsis los ntawm qhov ntev ntawm rau daim kab xev nyob rau hauv meters, thiab qhov ntim ntawm -mega -Oral terabytes, thiab cov qhov chaw dawb rau cov xov xwm yuav tsis tau txaus. Feem ntau cov lus nug ploj ib zaug voiced qhov luaj li cas ntawm ib cov video kwj: nyob rau hauv 1 feeb HDTV txheem yog hais txog 3 GB. Yog li ntawd tam sim no tag nrho cov video thiab audio yog tiav los ntawm kev kawm tshwj xeeb uas kom tsis txhob ua ntaub ntawv thov loj los ntawm tshem (Compression, compression) yog ib feem ntawm cov uas tsis yog-qhov tseem ceeb cov ntaub ntawv. Muaj ntau yam zoo li kev pab cuam, tab sis lug siv xwb ob peb tug. Piv txwv li, video codecs - yog DivX, Xvid, x264, lwm yam Tiam sis nyob rau hauv lub suab teb ntawm ib tug ntau yam tsawg .. Yeej, no kav nram qab no codecs rau suab: MPEG Txheej version 3, AC-3 thiab uncompressed WAV hom. Tam sim no qhov nruab nrab computer neeg siv yuav nrhiav tau ib qho piv txwv ntawm uncompressed kwj yog yuav luag tsis yooj yim sua.

Lo lus teb rau lo lus nug "dab tsi yog qhov codec" yog: codec - ib tug me me tshwj xeeb cov kev pab cuam los yog cov tsev qiv ntawv (dll), uas ua hauj lwm pab raws li lub encoding (compression) thiab seev suab ntaub ntawv, multimedia ntws. Piv txwv ib tug neeg tau qhib ib software neeg uas ua ntawv video ua ntaub ntawv thov. Tus qauv ntawm txhua cov ntaub ntawv yog cov ntaub ntawv tsev hais tias nws ntawm ib tug codec compression twb tau. Nyob rau lub hauv paus ntawm neeg uas ua ntawv cov lus qhia nyeem cov ntaub ntawv thov ntawm cov operating system nyob rau hauv qhov chaw ntawm lub codec thiab siv nws los txiav suab ntawm cov kwj, outputting video ntawm qhov screen. Yog hais tias lub system ntawm lub codec yog tsis tam sim no, ces pom nws tsis yooj yim sua mus ua si rov qab cov lus. Ib tug tshwj xeeb cov ntaub ntawv - tsuas yog suab los yog tsuas yog video.

Paub txog dab tsi codecs yuav pab tau nyob rau hauv kev txiav txim los mus txiav txim, los ntawm txoj kev uas lub hom phiaj cov ntaub ntawv tau raug compressed. Qhov no yuav tsum mediainfo kev pab cuam, GSpot los yog cov zoo li hais tias cov ntaub ntawv block. Muaj ntau ntau, tej zaum txawm ib daim ntawv thov rau kev ua hauj lwm nrog multimedia ntaub ntawv (hom Hoobkas) muab tej ib lub sij hawm. Peb coj lub cursor rau cov yam ntaub ntawv thiab hu xov tooj rau cov zaub mov. Nyob rau hauv qhov link "Saib" los yog "Xa mus" xaiv yuav tsim nyog. Tom ntej no, cov ntaub ntawv rau me me - mus download tau thiab nruab cov codecs.

Leej twg paub dab tsi codecs mus tau yooj yim yuav daws tau qhov teeb meem ntawm inoperability ntawm multimedia ntaub ntawv. Koj tsis tas yuav mus delve rau hauv cov yam ntxwv ntawm ib tug encoder los yog nyeem multi-nplooj phau ntawv no. Cov tshuaj heev yooj yim - download tau thiab nruab tshwj xeeb free sau los ntawm codecs. Tam sim no ib tug ntawm qhov zoo tshaj plaws - qhov no yog K-Lite codec pob. Txheej tshwm sim nyob rau hauv ob peb lub versions, li ntawd nws yog zoo tshaj plaws tsis txhob spare ib tug ob peb ntxiv megabytes siv, thiab tam sim ntawd download tau Mega pob. Thaum txhim kho beginners siv tau cov pom zoo tsim tawm muaj nqis, thiab tshaj cov neeg siv yog thov kom ua rau taw tes kom paub tias nws yog tsim nyog los sau npe nyob rau hauv lub system. Tom qab txhim kho K-Lite tag nrho cov codecs yuav tau sau npe thiab yuav tau txais kev txuas mus rau cov neeg uas ua raws li qhov kev thov. Uas yog, muaj cov codecs rau cov neeg siv kiag li "tshab".

Muaj ib txoj kev mus ua si multimedia ntaub ntawv. Rau qhov no yog tshwj xeeb players (PotPlayer, VLC, etc.). Algorithms rau seev suab yog nyob rau hauv lawv tus kheej.