Codecs: Lawv Yog Dab Tsi Hauv Video?

by kim Kho tshiab: Lub rau hli ntuj 27, 2022

Codecs yog ib feem tseem ceeb ntawm cov txheej txheem tsim video. Codecs yog ib txheej ntawm algorithms uas tau siv los compress thiab decompress video thiab audio files. Lub codec yog qhov tseem ceeb rau kev txo qhov loj ntawm cov ntaub ntawv, tso cai rau koj hloov thiab khaws lawv sai dua.

Hauv tsab xov xwm no, peb yuav qhia dab tsi codecs yog, lawv ua haujlwm li cas, thiab lawv qhov tseem ceeb hauv kev tsim cov yeeb yaj kiab.

Definition ntawm ib tug Codec

Ib codec yog ib lub tshuab uas encodes video, suab thiab cov ntaub ntawv ntws nyob rau hauv daim ntawv digital. Codecs compress cov ntaub ntawv yog li nws yuav siv sij hawm tsawg qhov chaw nyob rau hauv cia los yog rau kis tau tus mob, thiab kuj txhim khu qhov zoo ntawm ib tug yees duab los yog suab kwj los ntawm kev txhim kho nws cov visuals los yog suab.

Codecs tau siv dav hauv online faib ua yeeb yaj kiab, TV thiab suab paj nruag. Cov kev pabcuam streaming online xws li Netflix, Amazon Prime Video thiab Spotify siv codecs los nthuav lawv cov ntsiab lus yam tsis muaj kev cuam tshuam rau qhov zoo. Kev xa cov yeeb yaj kiab nrog cov codecs siab heev tuaj yeem ua rau lawv me me thaum tseem khaws cia qhov zoo ntawm cov khoom qub. Qhov no tso cai rau cov kev pabcuam streaming tau yooj yim faib cov yeeb yaj kiab rau cov neeg siv khoom yam tsis tau them tus nqi bandwidth loj ntawm lawv cov tes hauj lwm lossis cov txheej txheem.

Ntxiv nrog rau kev ua kom muaj txiaj ntsig zoo thiab kev sib kis, codecs tuaj yeem muab ntau yam txiaj ntsig rau cov chaw muab kev pabcuam hauv online xws li:

• Lub sijhawm thauj khoom sai dua
• Txhim kho zog efficiency
• Zoo dua scalability
• Cov cuab yeej siv tau nce ntxiv

Codecs kuj tseem siv tau rau kev ruaj ntseg los ntawm encrypting cov ntsiab lus cov ntaub ntawv yog li ntawd tsuas yog cov neeg siv tau tso cai nkag tau rau lawv.

Lub luag haujlwm ntawm Codecs hauv Video

Codecs, ib tug luv luv ntawm "coder-decoder", yog algorithms lub luag hauj lwm rau compressing thiab decompressing video thiab audio ntaub ntawv. Los ntawm kev siv cov tswv yim tshwj xeeb compression, codecs muaj peev xwm txo qhov loj ntawm cov ntaub ntawv video thiab audio yam tsis tau poob zoo. Qhov no ua rau kom nrawm dua thiab rub tawm nrawm dua - txawm tias koj tab tom ua yeeb yaj kiab lossis ua si hauv online - nrog rau siv ntau qhov chaw tsawg dua ntawm koj lub hard drive.

Tsis tas li ntawd, codecs kuj tseem siv tau thaum kaw thiab tom qab ua cov ntaub ntawv video los tsim cov duab daws teeb meem siab tshaj plaws uas muaj peev xwm sib txawv ntawm tus ncej, bitrates, xim tob thiab lwm yam. Codecs txiav txim siab seb hom kev kaw lus yuav siv li cas - piv txwv li, 4K daws teeb meem lossis HD - txhawm rau txhim kho qhov kev pom zoo. Raws li cov kev cai tshwj xeeb rau txhua daim ntawv thov, muaj ntau ntau hom codecs muaj xws li:

• H264/AVC
• .265/HEVC
• VC-1/WMV 9
• MPEG4
• VP8/VP9

Lub codec ua haujlwm los ntawm compressing cov kwj tawm (piv txwv li, yees duab lossis suab) rau hauv cov ntaub ntawv me me uas tuaj yeem tswj hwm tau zoo dua hauv tes hauj lwm lossis khaws cia rau hauv zos drives; qhov no yog hu ua encoding. Conversely ntawm playback (piv txwv li thaum streaming yeeb yaj duab hauv internet), cov ntaub ntawv compressed yuav tsum tau hloov dua siab tshiab rau hauv lawv cov thawj zoo hom ntawv uas yog tiav los ntawm seev suab cov ntaub ntawv encoded ua ntej; txheej txheem no hu ua seev suab. Nrog kev pab los ntawm cov khoom siv tsim nyog (xws li cov duab kos thiab lwm yam), hardware pab encoding tuaj yeem txhim kho encoding ceev loj heev ntawm qhov tsawg tsawg hauv qhov zoo - uas ua rau lawv haum rau cov ntawv thov nrog siab ncej tus nqi cov kev cai xws li cov kev pabcuam streaming real-time lossis huab gaming.

Hom Codecs

Codecs yog lub neej txoj sia ntawm cov ntsiab lus video - lawv txiav txim siab seb cov yeeb yaj kiab compressed, decompressed thiab xa mus li cas. Lawv pab kom peb saib cov yeeb yaj kiab ntawm qhov sib txawv thiab cov kev daws teeb meem ntawm ze li ntawm txhua lub cuab yeej. Muaj ntau ntau hom codecs muaj, txhua tus ua lub luag haujlwm sib txawv hauv cov txheej txheem saib cov ntsiab lus video.

Nyob rau hauv tsab xov xwm no, peb yuav ua tib zoo saib qhov tob feem ntau hom codecs:

Lossy Codecs

Lossy codecs yog cov qauv compression uas txo qhov zoo ntawm cov yeeb yaj kiab thawj, txi cov duab zoo thiab cov ntaub ntawv rau cov ntaub ntawv loj. Lub hom phiaj yog ua kom cov kwj video me txaus kom nws tuaj yeem saib lossis rub tawm sai thiab ua tau zoo. Thaum piv rau lossless codecs, lossy codecs feem ntau tsim cov ntaub ntawv me me nrog cov ntaub ntawv tsawg, tab sis qhov no los ntawm kev siv nyiaj ntawm acuity thiab tag nrho fidelity.

Ob hom kev poob siab codecs yog intraframe or tsis tu ncua bitrate (CBR) thiab interframe or variable bitrate (VBR). Intraframe coding sau tag nrho cov ntsiab lus thav duab raws li ib chav nyob hauv txhua cov ntaub ntawv compressed; qhov no ua rau cov ntaub ntawv loj tab sis tsawg dua artifacts ntawm txhua tus ncej thiab cov duab zoo dua tag nrho. Interframe coding faib cov ntsiab lus thav duab rau hauv ntu kom tso cai rau cov ntu compressed ntau yam tsis muaj kev hloov pauv ntawm cov thav ntawv; Cov ntaub ntawv tshwm sim zoo li muaj qhov me me dua li intraframes tab sis kuj muaj ntau cov khoom qub ntawm cov thav ntawv.

Cov piv txwv nrov ntawm lossy codecs suav nrog MPEG-4 AVC/H.264, MPEG-2 thiab H.265 / HEVC, Windows Media Video 9 (WMV9), RealVideo 9 (RV9), DivX, Xvid thiab VP8/VP9. Cov no tau dhau los ua neeg nyiam hauv video streaming daim ntawv thov xws li YouTube vim lawv muaj peev xwm los nthuav cov ntaub ntawv ntau sai yam tsis muaj kev txi tseem ceeb hauv cov duab zoo - cov neeg tuaj saib tuaj yeem saib cov yeeb yaj kiab ntev nrog kev sib txuas bandwidth tsawg thaum khaws qhov pom kev pom tseeb.

Lossless Codecs

Video codecs yog ib hom computer software siv rau digital video ntaub ntawv compression, los yog encoding. Cov txheej txheem no yog qhov tsim nyog thaum ua haujlwm nrog cov ntaub ntawv digital loj txhawm rau txo qhov loj ntawm cov ntaub ntawv thiab nce cov ntaub ntawv sai npaum li cas rub tawm, xa lossis xa tawm. Codecs tau muab faib ua ob pawg: poob thiab lossless codecs.

Lossless codecs muab qhov tseeb digital replica ntawm cov ntaub ntawv tom qab encoding los ntawm kev muab cov ntaub ntawv tiav, uas tso cai rau cov lej digital duplication thaum decompression. Nws siv qhov chaw ntau dua compression poob tab sis kuj tsis koom nrog nws tus kheej distortion nrog rau yooj yim tso suab / duab kho kom raug yam tsis muaj kev cuam tshuam zoo. Lossless codecs suav nrog algorithms xws li:

• LZW
• JPEG LS
• FLAC
• ALAC
• MPEG-4 ALS

Hardware Codecs

Kho vajtse codecs yog cov codecs uas siv cov cuab yeej kho vajtse tshwj xeeb rau encode thiab txiav txim siab video signals. Qee lub khoos phis tawj tshiab, xws li laptops, suav nrog cov khoom siv kho vajtse-raws li video encoder chav tsev uas tuaj yeem siv los ua kom cov txheej txheem encoding. Cov koog no muaj txiaj ntsig zoo thiab tuaj yeem muab cov txiaj ntsig ua tau zoo tshaj software-based codecs. Tsis tas li ntawd, qee qhov kho vajtse codecs standalone muaj nyob uas muab cov txiaj ntsig zoo tshaj plaws rau kev tshaj tawm / streaming daim ntawv thov.

Ob lub ntsiab ntawm hardware codecs yog Compression/Encoding thiab Hloov Codecs:

• Compression/Encoding Codecs: Cov khoom siv no feem ntau tuaj nrog lawv tus kheej cov software, txawm tias muaj lwm yam kev xaiv kuj muaj. Lawv siv cov khoom tshwj xeeb los ua video encoding ntawm kev kub ceev yam tsis siv zog ntau lossis CPU zog txheeb ze rau software encoders. Zoo li software encoders, lawv feem ntau yuav tsim ntau yam kev tawm tswv yim xws li H.264 los yog MPEG-2/4 tawm tswv yim.
• Hloov Codecs: Kuj tseem hu ua decoding cards lossis decoding accelerators, cov khoom siv no muaj cov chips muaj zog uas tsim tshwj xeeb rau kev txiav txim siab compressed video signals hauv lub sijhawm tiag tiag yam tsis tas siv ntau qhov system peev txheej (CPU zog). Dedicated decoding cards yog ib qho chaw nyob rau hauv ib puag ncig kev tshaj lij uas cov yeeb yaj kiab loj yuav tsum tau muab tshem tawm sai sai nrog kev cuam tshuam tsawg kawg ntawm kev ua haujlwm thiab kev ruaj ntseg.

Nrov Codecs

Codecs yog qhov tseem ceeb rau txhua tus neeg uas ua haujlwm nrog kev tshaj tawm video. Lawv yog cov khoom xyaw ntawm koj cov ntaub ntawv video, cov khoom xyaw uas cia cov neeg ua yeeb yaj kiab pom ntawm video thiab suab, thiab cov txheej txheem ntawm compressing cov ntaub ntawv kom nws yooj yim rau khaws thiab kwj. Muaj ntau hom codecs muaj, thiab qhov tsim nyog rau koj qhov project yuav tsum tau xaiv.

Hauv seem no, peb yuav tham txog qhov nrov tshaj plaws codecs:

H.264

H.264 (Kuj hu ua MPEG-4 AVC) yog ib qho nrov tshaj plaws codecs rau encoding digital video ntaub ntawv rau siv nyob rau hauv ntau yam kev siv - los ntawm streaming kev pab cuam rau Blu-duab tshav players rau smartphones. Nws lub peev xwm los nthuav cov yeeb yaj kiab zoo rau hauv cov ntaub ntawv me me ua rau nws yog ib qho ntawm feem ntau siv thiab ntau yam codecs ntawm kev ua lag luam niaj hnub no.

H.264 ua haujlwm los ntawm kev rhuav tshem cov thav duab rau hauv 8 × 8 pixel blocks thiab tom qab ntawd compressing lawv nrog ntau qhov sib txawv algorithms. Vim tias H.264 muaj txiaj ntsig zoo, nws tuaj yeem tsim cov yeeb yaj kiab zoo tshaj plaws txawm tias tsawg heev, ua rau nws zoo tagnrho rau ntau yam kev siv los ntawm HDTV tshaj tawm rau cov neeg siv xov xwm thiab cov kev pabcuam smartphone / ntsiav tshuaj.

H.264 muab kev txhawb nqa rau ob qho kev nce qib scan (qhov twg tag nrho cov kab ntawm cov duab pib scanning tag nrho ib zaug) thiab interlaced scan video, txawm hais tias feem ntau cov codecs niaj hnub no tsuas yog txhawb nqa scan vim lawv muaj txiaj ntsig zoo ntawm cov ntaub ntawv loj thiab kev siv bandwidth. H.264 kuj muaj peev xwm tuav cov kev daws teeb meem mus txog 4K daws teeb meem (4096 × 2160 pixels), xyuas kom meej tias nws tseem cuam tshuam raws li cov neeg tsim cov ntsiab lus ntau txav mus rau cov kev daws teeb meem loj dua lub sijhawm.

Nrog rau nws cov kev ua tau zoo, ib qho ntawm H.264 qhov zoo tshaj plaws yog qhov tseeb tias nws tau txais los ntawm ntau lub tuam txhab tsim khoom lag luam uas ua rau nws yooj yim dua rau cov neeg siv xa cov ntsiab lus ntawm cov khoom siv yam tsis tas yuav txhawj xeeb txog teeb meem kev sib raug zoo lossis tsis sib xws software / hardware configurations. Vim li no, H.264 tseem nyob twj ywm ib qho tseem ceeb codec rau ntau yam khoom siv thiab kev siv niaj hnub no, txawm tias muaj cov kev xaiv tshiab tshiab xws li HEVC (High Video efficiency Coding).

H.265

H.265, kuj hu ua High Efficiency Video Coding (HEVC), yog tus qauv video compression uas muab kev coding ntau dua li nws cov thawj, H.264/MPEG-4 AVC (Advanced Video Coding). Nws txhawb 8K daws teeb meem thiab tuaj yeem nthuav tawm cov ntaub ntawv video mus txog ob zaug ua tau zoo raws li tus txheej txheem dhau los - nrog rau 40 feem pua ​​​​kev tuav pov hwm zoo dua tshaj nws cov thawj.

H.265 yog qhov zoo tshaj plaws rau H.264/MPEG-4 AVC, muab kev muaj peev xwm compression ntau dua nrog cov teeb meem me me thiab ua haujlwm zoo dua ntawm cov khoom siv playback xws li TV, smartphones, laptops thiab ntsiav tshuaj. Nws yog ib qho qhib qhov chaw tsim nyog rau txhua hom ntsiab lus - los ntawm TV tshaj tawm mus rau streaming yeeb yaj duab hauv internet thiab Blu-duab tshav discs - cia cov ntsiab lus tsim kom xa cov video zoo tshaj plaws thaum txo cov nqi bandwidth.

Qhov yooj ntawm H.265 ua rau nws siv tau rau ntau yam kev siv xws li:

• Tshaj tawm TV (xws li 4K lossis txawm 8K)
• Cov kev pabcuam streaming thiab kev sib txuas lus nrog rau cov khoom siv mobile thiab satellite
• Kev paub txog kev muaj tiag virtual
• Daim ntawv thov kev kho mob
• HEIF cov duab tshiab - ua rau nws muaj peev xwm rau cov duab ntes los ntawm cov koob yees duab tseem ceeb lossis lub koob yees duab xov tooj kom compressed ntxiv dua li yav dhau los yam tsis muaj cov duab nthuav dav.

VP9

VP9 yog qhov qhib thiab tsis muaj nuj nqis video codec tsim los ntawm Google. Tsim los siv rau hauv web apps, nws muaj lub xeev-ntawm-tus-kos duab thev naus laus zis nrog kev txhim kho compression rau streaming thiab rub tawm ntawm qis qis.

VP9 kuj muaj ntau yam nta uas muaj txiaj ntsig zoo rau kev siv video:

• siab dynamic ntau thiab xim qhov chaw,
• lossless encoding hom,
• adaptive streaming thiab encoder scalability.

Nws txhawb cov tsis-square pixels, sib tshooj squares ntawm cov xim sib txawv los yog qhov tseem ceeb luminance, kev twv ua ntej ntawm lub cev (xws li kev them nyiaj rau cov lus tsa suab) nrog rau cov kev twv ua ntej coding txoj kev (xws li discrete cosine transforms). VP9 kuj muaj peev xwm los encode cov duab nrog txog 8 cov xim qhov tob rau ib pixel. Cov hom ntawv tso cai rau cov duab zoo dua los ntawm kev pom cov ntsiab lus xws li txo cov suab nrov thiab cov npoo ntse dua lwm cov codecs ua ntej.

Thaum txiav txim siab VP9 kwj, tus neeg siv lub cuab yeej ua txhua yam haujlwm los txiav txim siab nws rov qab rau hauv ib qho yeeb yaj kiab. Qhov no ua rau nws yooj yim rau kev nkag mus thiab tso cai rau kev ua si nrawm dua li nrog qee lwm codecs vim nws kev xav tau tsawg tsawg. Qhov no siv tshwj xeeb tshaj yog thaum cov neeg siv online nkag mus rau ntau qhov kwj ib zaug los ntawm ntau qhov chaw; lawv tuaj yeem ua tau li ntawd yam tsis muaj tag nrho lawv cov peev txheej suav nrog hauv kev txiav txim siab ib leeg. Tsis tas li ntawd, kev xa khoom siv ib hom ntaub ntawv xws li MP4 pab kom muaj kev sib raug zoo ntawm cov khoom siv lossis cov platforms uas tej zaum yuav tsis tuaj yeem saib cov ntsiab lus encoded hauv lwm hom ntawv xws li WebM lossis MKV.

Codecs thiab Video Zoo

Codecs yog ib feem tseem ceeb ntawm encoding thiab decoding video, uas yuav cuam tshuam rau video zoo. Codecs yog siv los compress thiab decompress video ntaub ntawv, thiab hom codec koj xaiv yuav cuam tshuam qhov loj thiab zoo ntawm video.

Hauv tsab xov xwm no, peb yuav tham txog ntau hom codecs thiab yuav ua li cas lawv tuaj yeem cuam tshuam qhov zoo ntawm video:

Npaum li cas

Npaum li cas yog ib qho kev ntsuas ntawm ntau npaum li cas cov ntaub ntawv codec xav tau los sawv cev rau ib qho video. Ntsuas nyob rau hauv me ntsis ib ob, tus bitrate tuaj yeem cuam tshuam rau ob qho tib si video zoo thiab nws cov ntaub ntawv loj npaum li cas yuav loj npaum li cas.

Qhov siab dua qhov bitrate, qhov Cov ncauj lus kom ntxaws ntxiv tuaj yeem suav nrog hauv cov txheej txheem encoding (lossis compression). thiab yog li cov duab zoo dua koj yuav tau txais. Txawm li cas los xij, nws kuj txhais tau tias cov ntaub ntawv loj dua yuav tsum tau muab khaws cia lossis xa mus. Yog tias koj xa koj cov vis dis aus hla txhua hom digital network (xws li hauv internet), koj yuav pom tias cov bitrates siab dua ua rau pom qhov nce hauv latency lossis lub sijhawm buffering.

Lwm yam uas cuam tshuam rau bitrate yog kev daws teeb meem - raws li kev daws teeb meem nce, yog li cov ntaub ntawv loj - tab sis qhov no nyob ntawm lwm yam zoo li codecs siv, ncej tus nqi thiab ncej qhov ntau thiab tsawg. Feem ntau, cov bitrates qis dua yuav muab cov yeeb yaj kiab tsis zoo txawm tias muaj lwm yam xws li kev daws teeb meem siab.

Codecs txhua tus muaj lawv tus kheej pom zoo ntau yam rau daim duab zoo tshaj plaws thiab siv cov ntaub ntawv tsawg kawg nkaus yog li nco ntsoov saib rau hauv koj nyiam encoders thaum lub sij hawm compression txheej txheem.

kev daws teeb meem

Kev daws teeb meem yog qhov ntsuas ntawm video cov ntaub ntawv nyob rau hauv cov nqe lus ntawm pixels, thiab nws yog ib qho ntawm cov thawj yam uas txiav txim siab video zoo. Nws yog ib qho tseem ceeb kom nkag siab qhov ntawd kev daws teeb meem siab dua yuav ib txwm tsim cov yeeb yaj kiab zoo dua vim tias tsuas muaj ntau pixels crammed rau hauv txhua tus ncej. Cov kev daws teeb meem feem ntau siv hauv online streaming yog Xyoo 1920 × 1080 (Full HD) thiab 1280 × 720 (HD).

Qhov kev daws teeb meem siab dua video yuav tsum tau ua ntau lub zog, uas tuaj yeem ua rau muaj teeb meem sib xws yog tias tus neeg siv lub kaw lus tsis tuaj yeem hloov kho. Cov yeeb yaj kiab daws teeb meem siab dua kuj txhais tau tias cov ntaub ntawv loj dua uas yuav tsum muaj cov codec zoo dua tuaj yeem ua si tau zoo ntawm txhua yam khoom siv. Common kev lag luam codecs siv rau streaming online muaj xws li H.264 lossis AVC, VP8, VP9 thiab HLS lossis Apple HLS (HTTP Live Streaming).

Nyob ntawm koj daim ntawv thov thiab hom cuab yeej koj tab tom npaj xa koj cov ntsiab lus los txiav txim siab seb codec twg yog qhov zoo tshaj rau koj.

Thaum kawg, yog tias koj muaj qhov tsim nyog encoding teeb uas nta cov zoo tshaj codec muaj ces koj yuav tsum tsis muaj teeb meem xa cov yeeb yaj kiab zoo ntawm txhua qhov kev daws teeb meem uas yuav tsis raug kev txom nyem los ntawm buffering los yog lwm yam teeb meem playback thaum tseem khaws cia ib theem zoo ntawm kev pom kev ncaj ncees.

Ncej Rate

Ncej tus nqi yog ib qho tseem ceeb thaum nws los txog rau video zoo thiab codecs. Nws yog qhov ntsuas ntawm pes tsawg tus thav duab raug ntes hauv ib thib ob, feem ntau ntsuas hauv Frames per second (FPS). Qhov siab dua tus ncej tus nqi, qhov smoother cov footage yuav tshwm sim. Cov ncej qis ua rau cov yeeb yaj kiab tsis zoo, thaum tus ncej siab dua yog qhov zoo dua los muab cov duab dej.

Piv txwv li, thaum kaw nrog 8 FPS lub koob yees duab vs lub koob yees duab 30 FPS, 8 FPS lub koob yees duab yuav tsim cov duab thaij duab vim nws qis dua ntawm thav ntawv ib ob. Ntawm qhov tod tes, 30 FPS lub koob yees duab tsim cov duab zoo nkauj nrog ntau qhov kev ua kom pom qhov muag plooj ntawm lawv dua li 8 FPS lub koob yees duab ua vim tias yuav muaj peb zaug ntau li ntau cov duab ntes.

Nyob rau hauv tas li ntawd, sib txawv codecs yuav tsum sib txawv yam tsawg kawg nkaus los yog siab tshaj tus ncej tus nqi rau kev pom zoo. Yog tias siv tsis raug lossis tsis paub txog koj tus lej codec cov cai rau tus nqi sib raug zoo, koj cov video zoo yuav raug kev txom nyem. Feem ntau tus qauv thav duab tus nqi rau feem ntau tam sim no video tawm tswv yim thiab saib kev paub yog 24 fps (cov yeeb yaj kiab) thiab 30 fps (TV qhia). Txawm li cas los xij, qee qhov codecs tuaj yeem txhawb nqa siab dua ib yam nkaus - xws li 48 fps lossis 60 fps - thaum muab kev pom zoo tshaj plaws thiab smoothness piv rau lawv cov counterparts qis.

xaus

Hauv kev xaus, kev nkag siab codecs yog ib feem tseem ceeb ntawm kev tsim thiab saib cov yeeb yaj kiab ntawm peb cov khoom siv digital. Paub txog lub hauv paus ntawm lub suab thiab video codecs, lawv cov lus txhais, thiab qhov sib txawv tseem ceeb ntawm lawv tuaj yeem pab peb txiav txim siab paub zoo dua thaum xaiv thiab saib cov xov xwm digital. Tsis tas li ntawd, muaj cov ntsiab lus dav dav ntawm cov feem ntau nrov siv video codecs tseem tuaj yeem muab peb nkag siab ntau ntxiv txog qhov sib txawv codecs tuaj yeem hloov qhov zoo thiab lub suab ntawm video.

Thaum kawg, nws yuav pab tau kom nco ntsoov qhov ntawd tsis yog txhua tus video codecs yog cross-compatible-lub ntsiab lus tias qee cov yeeb yaj kiab uas xav tau ib tus codec yuav tsis ua si zoo ntawm lwm lub cuab yeej yog tias nws tsis paub hom tshwj xeeb ntawd. Hmoov zoo, tam sim no peb muaj ntau txoj kev xaiv dua li qhov twg los thaum nws los saib peb cov ntsiab lus digital nyiam - suav nrog kev sib raug zoo dua thoob plaws ntau lub platform. Yog li siv koj lub sijhawm tshawb nrhiav cov qauv tsim nyog rau koj thiab nrhiav seb qhov twg ua haujlwm zoo tshaj rau koj cov kev xav tau!

Nyob zoo, Kuv yog Kim, niam thiab ib tus neeg nyiam nres nrog keeb kwm yav dhau los hauv kev tshaj tawm thiab kev txhim kho lub vev xaib. Kuv muaj kev mob siab rau kev kos duab thiab kev ua yeeb yam, thiab tam sim no kuv tab tom dhia taub hau ua ntej mus rau hauv lub ntiaj teb nres. Nrog rau kuv qhov blog, Kuv tabtom qhia kuv cov kev kawm nrog koj.