Txhua yam uas koj yuav tsum paub txog H.265
H.265 High Efficiency Video Coding (HEVC) yog ib tug video codec tshiab. Nws yog ib txuj video compression uas yog cov successor H.264 los yog MPEG-4 AVC (Advanced Video Coding), yog ib lub schemes siv Blu-duab tshav compression. HEVC doubles cov ntaub ntawv no compression piv piv rau H.264 los yog MPEG-4 AVC nyob rau tib theem li cov video zoo. Uas yog compressed video ntawv yuav muab ib nrab ntawd luaj li cas ntawm cov ntaub ntawv video compressed nrog H.264. Nws tseem yuav ua kom cov video zoo ntawm cov ntsis ib yam twg. H.265 pab yuav mus rau 8 K UHD daws tuaj rau 8192 x 4320.
Tshooj 1: Tau H.265 yog vim li cas?
Muaj pes tsawg tus neeg yees HD muaj sia nyob hauv lub lag luam thiab cov ntaub ntawv los ntawm cov neeg yog nco. Qhov luaj li cas video ntawv tsim muaj cov koob yees duab loj heev. Yuav tsum muaj tej txoj kev yooj yim rau koj coj cov yeeb yaj duab hauv koj lub tsev muaj cov bandwidth ib yam uas koj siv rau koj kev twb kev txuas hauv Internet. Qhov no yuav tau tiav nyob rau ntau txoj kev. Ib txoj kev, tejzaum nws qhov yooj yim tshaj, yog hnyav ncawv hlob cov ntaub ntawv uas nws thiaj li yuav txo qhov zoo tshaj ntawm cov duab. Lwm txoj kev yog nrhiav tau tus zoo compressing tshuab uas yuav txo qhov me me tsis muaj compromising kev daim duab. H.265 yog zoo li no cov technology compression uas yog tsim khaws ntsoov txoj kev thib ob uas. Nws compresses cov yees duab UHD khaws cia zoo ib yam cov yees duab.
Tshooj 2: Cov keeb kwm ntawm H.265
Rau xyoo 2004, ITU-T yees duab Coding kws muaj txuj Group (VCEG) pib rau txoj kev ntawm successor mus rau codec H.264 thiab nyob rau xyoo 2007 ISO/IEC Avenues duab kws muaj txuj Group (MPEG) pib cov lus rau huas. Nyob rau xyoo 2010, cov MPEG thiab VCEG teams collaborated ntawm ob leeg hu rau cov Proposals thiab raws txoj cai ob leeg koom nrog pab neeg ntawm yees duab Coding (JCT-VC) los tsim tus txheej txheem HEVC. Nyob rau lub ib hlis ntuj 25, 2013 cov ntsiab lus kev ntawm HEVC nyob finalized thiab rau hnub tim 13, 2013 nws tau thawm xyoo tus me li ib txuj.
Qhov 3: H.265 thawv
Txog tam sim no, lub ntim uas txhawb H.265 los yog HEVC muaj raws li nram no:
- MPEG thauj dej – siv los ntawm ATSC, DVB thiab Blu-duab tshav Disc. Cov ntaub ntawv npe extension ntawm cov thawv no yog .ts, .tsv, .tsa.
- MPEG tawm thauj – muaj nyob rau hauv txoj kev loj hlob cov thawv txheem.
- ISO raws li ntaub ntawv tawm hom ntawv – siv los ua lub hauv paus rau lwm yam ua tawm daim ntawv hom ntawv. Cov ntaub ntawv npe extensions muaj .mp4, .3gp, .3g2, .mj2, .dvb, .dcf, .m21
- Matroska – ib hom ntawv qhib dawb thawv txheem. Cov ntaub ntawv npe extensions nyiam .mkv, .mk3d, .mka, .mks
Qhov 4: H.265 thawv
Nyob ze lawm yav tom ntej, HEVC yuav siv coj los yuav luag txhua cov ntaub ntawv kawm. Nws yog tus uas tsim kom muaj kev txiav txim siab rau qhov kev pab puas yuav xa cov ntaub ntawv siv HEVC/H.265 siv MPEG-4/H.264. Cov tuam txhab uas muag twb ywj siv HEVC tau streaming 4K ntsiab lus. Netflix, Amazon, M-mus yog few xwb. Netflix muaj pib siv HEVC kwj 4K ntsiab lus rau ob peb 4K TVs nruab los txiav suab ntawm cov HEVC. Ua chaw tsim tshuaj cov tshooj TV hauv paus li LG, Samsung, Sony, Vizio, Panasonic thiab Toshiba yuav manufacture TVs nrog kev them nyiaj yug HEVC thiab cov TVs yuav tau kawm kwj 4K.
Amazon muaj amalgamated nrog rau ob peb zaug lwm studios Warner Bros, Lionsgate, xyoo pua 20th hma liab thiab foundations li tau streaming 4K ntsiab lus siv HEVC. Streaming M-mus muab kev pab muaj tseem tshaj tawm ib yam ntawm ib app rau Samsung TVs.
Tab sis yog cable tuam txhab uas muag cov tsis broadcasting 4K tau, lawv yuav txiav txim siab nws yavtom ntej xyoo. DirectTV thiab Comcast tus Xfinity yuav siv ib app rau kwj 4K ntsiab lus nyob hauv Internet kom Samsung TV.
Ib co tshiab smartphone li Sony Xperia Z2 muaj nyob HEVC pab mus tua 4K video.
Qhov 5: Yuav ua li cas rau cov ntaub ntawv ua si H.265
Ntawm no yog ib daim ntawv teev cov sab saum toj 3 players uas tau ua ntaub ntawv HEVC:
- Wondershare Player
- DivX Player
- VLC Media Player
1. Wondershare Player
Wondershare Player yog ib tug haib tawm neeg uas ua ntawv thiab tshuaj zoo rau nws ua si HEVC ntaub ntawv. Nws qhia txog them nyiaj yug rau ntau hom hom ntawv lub thiab video seamless.
Nta
Peb saib cov nta salient Wondershare Player:
- Nws yog kev ua si MPEG, MKV, WMV, AVI thiab ntau lwm tawm tswv yim hauv zoo muaj peev.
- Nws thiaj thauj thiab ua si subtitle ntaub ntawv nyob hauv lub nroog Yeiuxalees, ssa thiab srt.
- Nws yuav tau customize subtitle loj, me, kob thiab lwm cov neeg.
- Nws yuav siv sij hawm tsawg dua nco ua si zoo video.
- GPU Radon optimization heev tej zoo-kawm ntawv video.
- Playlists yuav ncaav.
- Yuav bookmark nyiam video clips hauv internet.
- Cia rho shutdown tom qab playback.
2. DivX Player
DivX neeg uas ua ntawv yog lwm robust HEVC daim video neeg uas ua ntawv. Nws yog ib qho puav pheej winning software uas muaj HEVC playback. Nws muaj zoo playback cov tsos, TV qhia. Nws txhawb tau yuav luag txhua tus nrov tawm tswv yim xws li AVI, DIVX, MKV, MP4, thiab ntau dua. Thaum uas siv cov DivX Media neeg rau zaub mov ib yuav cub tau suab seev yees duab thiab cov duab kom tej DLNA-tshaj ntaus ntawv nyob tom tsev li PS3, XBOX, los sis Samsung Galaxy kab ntawm cov khoom. Nrog tus kwj rau feature rau cov neeg uas ua ntawv neeg siv tau kuj tswj uas ntaus nws cub tau lawv cov yeeb yaj duab rau.
Nta
Qhov nta DivX Player salient yog:
- Nws txhawb yees duab li 4 K.
- Cov subtitle tej lus txhawb zog thiab yooj yim switching ntawm cov subtitles.
- Txhawb ntau lub lem.
- Du txiav/RW ceev navigation mus rau yam scene tso cai rau.
- Yuav saib txawv scenes nrog lub laub xwb ntawm khawm.
- Tau cub yeeb yaj duab, suab paj nruag thiab duab los ntaus cov ntawv DLNA-tshaj.
- Yuav kom taug qab cov ntawv DivX tus.
3. VLC Media Player
Lwm neeg uas ua ntawv uas tau ua ntaub ntawv HEVC yog cov VLC tawm Player, uas yog ib tug neeg uas ua ntawv dawb thiab qhib tau qhov twg los thiab lub moj khaum. Nws txhawb ntau hom ntaub ntawv multimedia. Nws kuj txawj ntaus phias ntau cov twg uas tau streaming DVDs thiab.
Nta
Cov yam ntxwv salient ntawm VLC tawm neeg uas ua ntawv yog li lwj:
- Nws yog cov neeg uas ua ntawv yooj yim, ceev thiab muaj hwjchim tawm.
- Plays feem ntau codecs MPEG, DivX, MKV, WebM, WMV, MP3 thiab ntau ntxiv
- Nws sau rau tag nrho nrog rau cov qhov rais, Mac OS X, Linux, Unix platforms.
- Nws tau ua tawm conversion thiab streaming
- Dawb kiag li
- Tsis muaj spyware, tsis muaj kev tawm thiab tsis muaj neeg siv nrhiav.
Tshooj 6: Yuav hloov ua lwm yam ntaub ntawv H.265 rau lwm hom
Yuav hloov ua lwm yam ntaub ntawv H.265 rau lwm hom ntawv, koj yuav tau ib tug haib thiab txhim khu kev qha converter. Wondershare Video Converter Ultimate yog ib tug xwb. Wondershare Video Converter Ultimate yeej muaj qhov rais thiab Mac OS X. Koj tseem mus muab tau ib tug mus sib version ntawm lub converter. Yog tus nta salient Wondershare Video Converter Ultimate:
- Muab 30 x sai conversion dua lwm conversion ntov muaj nyob rau hauv lub lag luam.
- Nws yuav siv ib daim video rau hom ntawv twg zoo.
- Yeej xav kom cov ntaub ntawv video converted yuav lwm ntaus ntawv siv Wi-nkaus network.
- Yuav hlawv video rau DVDs ntaub ntawv.
- Yuav tau hloov video ntaub ntawv ua ntej conversion.
- Nws kuj mus rub tau YouTube yees duab nrog ib tug nias.
Wb pom kauj ruam yog kauj ruam kev mus siv tau cov ntaub ntawv H.265 rau lwm hom ntawv.
Kauj ruam 1 Ces thiab Community Launch Wondershare Video Converter Ultimate
Download tau hauv qab no txij nws thiab nruab Wondershare Video Converter Ultimate koj lub computer thiab tso nws.
Kauj ruam 2 Ntxiv/ntshuam ntaub ntawv rau lub converter
Xaiv tab uas muaj hloov tus yog nws tseem tsis tau xaiv. Koj yuav ntxiv/ntshuam ntaub ntawv ob tug sib xws. Thawj txoj kev yog txhaj rau tus Add ntaub ntawv khawm ntawm sab laug qaum los yog qhov chaw ntawm cov pane.
Mam li qhib qhov rais tshiab. Ntawm yeej muaj koj yuav tuaj thiab xaiv cov video tej ntaub ntawv rua koj lub computer. Qhov thib ob uas yuav yooj yim tshaj. Cia li qhib lub uas muaj rau daim video directory ces cias luag ntawm cov directory thiab poob rau lub software pane. Koj kuj ntxiv tau ntau yam ntaub ntawv zuj zus.
Kauj ruam 3 Xaiv cov hom ntawv tso zis ntau lawm
Tam sim no, koj yuav tau xaiv tus tso zis ntau hom ntawv uas koj nyiam. Koj yuav tau ua qhov no los ntawm txhaj tso zis ntau hom ntawv nco-down daim ntawv nyob rau sab xis ntawm cov pane. Wondershare Video Converter Ultimate txhawb ntau hom hom ntawv uas yuav siv tau koj cov ntaub ntawv H.265. Koj yuav tau hloov ua lwm yam koj video ntaub ntawv rau ib tug ntaus ntawv kawm.
Kauj ruam 4 Sau kom tiav cov conversion
Tam sim no koj yuav cia li tau nyem rau ntawm qhov hloov khawm ntawm lub ces kaum hauv qab txoj cai ntawm qhov screen. Tos kom txog thaum cov conversion yog tag. Kom tiav cov conversion yuav ib txwm vam khom lub qhov coob thiab cov ntaub ntawv uas koj yog converting.
Thaum tag cov conversion no koj yuav nrhiav tau qhov chaw ntawm cov ntaub ntawv converted yog txhaj rau lub pob qhib ntawv tais ceev tseg rau hauv qab ntawm qhov screen. Koj yuav kuj pauv tau qhov chaw ntawd los yeej muaj ua ntej lub conversion.
Faj seeb: Koj yuav kuj siv tau lwm yam yeeb yaj duab rau ntaub ntawv H.265 rau Wondershare Video Converter Ultimate. Txhua yam koj yuav tau ua yog hloov tus codec hauv lub chaw rau H.265 thaum koj yog converting tus yees duab MP4 los yog lwm hom kev txhawb zog H.265.
Tshooj 7: H.265 VS H.264
| Hom | H.264 | H.265 |
|---|---|---|
| Lub npe | MPEG-4 AVC (paub ntau Video Coding) | HEVC (High Efficiency Video Coding) |
| Successor | Successor rau qhov MPEG-2 | Successor los MPEG 4 AVC / H.264 |
| Txhim kho | Ntsis tus nqi txo piv rau MPEG-2 yog 40-50% | Ntsis tus nqi txo nyob rau tib theem li siv qhov muag saib kom zoo dua H.264 yog 40-50% |
| Daws teeb meem | Kev txhawb zog li 4K (4, 096 x 2, 304) | Kev txhawb zog li 8K (8, 192 x 4, 320) |
| Tus nqi thiab | Kev txhawb zog mus 59.94 fps | Kev txhawb zog li 300 tawm fps |
| Profiles | 21 tso cai profiles | 3 pom zoo profiles, cua ntsawj ntshab rau 5 ntxiv |
| Entropy Coding | Entropy coding yog CABAC thiab CAVLC | Entropy coding CABAC tsuas yog |
| Compression Model | Hybrid Model Academic spatial-temporal twv ua ntej | Enhanced Hybrid spatial-temporal twv ua ntej qauv |
| Kev lag luam los tu | Hom thiab lees video codec rau cable, terrestrial, satellite thiab IPTV thiab tshaj tawm hauv xov. Lug siv thoob Blu-duab tshav, ruaj ntseg tshuab, video sablaj, mobile yees duab, tawm players, video tham thiab lwm yam. | Ua qauv qhia yuav siv thoob NAB, IBC, thiab lwm yam txheej xwm pib 2012 tuam txhab uas muag xws li ATEME, Broadcom, Thomson, Harmonic, Ericsson, Qualcomm thiab lwm yam. Ntxiv lawm nyob encoder/decoder neeg muag khoom software thiab kho vajtse raws li cov ntsiab. |
| Kev tso cai los ntawm xyoo | Tso cai rau xyoo 2004 | Tso cai rau 2013 |
| Drawbacks | Tau cov ntsiab lus UHD no unrealistic raws li qhov yuav tsum tau tus nqi ntsis yog kub. | Approx. 300% computational ntau vim twv ua ntej rau lwm loj thiab kim tsa suab xwm kim. |
Tshooj 8: H.265 VS VP9
VP9 Video khiav 9, cov successor los VP8, yog ib tug loyalty qhib thiab cov dawb video compression txheem tsim tau rau Google. Nws yog tus Google tseeb qhib tau qhov twg los yog ib qhov uas nws phiaj yog los kom tus muab cov ntsiab lus nyob hauv Internet. Nws yuav tsum tau kom txo qhov luaj li cas ntawm cov ntaub ntawv video rau ib nrab, muab piv rau tam sim no encoding tshuab hu ua H.264 los yog MPEG-4. Nws yuav muab coj los hlob video ntaub ntawv thiab kwj ntawm 4K daws teeb meem.
Google lawm twb tshaj tawm tias VP9 yuav muab rau cov ntsiab lus 4K rau YouTube. Google ua si no kuj yuav tsis siv cov VP9 tau streaming video muab kev pab. Thaum txhua yam kev pab uas ib tug neeg yuav tau txiav txim siab xa cov ntaub ntawv kawm siv VP9, yuav tsum muaj ib txhia tshaj Radon khiav ntawd ntaub ntawv kawm – uas yuav yog tus loj sib tw rau VP9. Google tau twb partnered nrog rau cov tuam txhab uas muag xws li Intel, caj NPAB, Broadcom, Marvell, Nvidia, Qualcom, RealTek, MediaTek, thiab Sigma rau manufacturing VP9 tej daim tshaj thiab cheebtsam.
Ces nws tseem tsim nyog hais tias peb yuav tsum sib piv H.265 thiab VP6. Cov kev sib piv ntawm cov ob video encoding qauv kawm yog li nram no
| Hom | VP9 | H.265 |
|---|---|---|
| Lub npe | Yees duab khiav 9 | HEVC (High Efficiency Video Coding) |
| Successor | Successor los VP8 | Successor los MPEG 4 AVC / H.264 |
| Tsim tawm | Tsim los ntawm Google ua tus qhib thiab dawb video compression txheem | Ntawv tsim los yees duab Coding kws muaj txuj Group (VCEG) thiab daim duab Avenues kws muaj txuj Group (MPEG). |
| Txhim kho | Ntsis tus nqi txo piv rau VP8 yog 40-50% | Ntsis tus nqi txo nyob rau tib theem li siv qhov muag saib kom zoo dua H.264 yog 40-50% |
| Daws teeb meem | Kev txhawb zog li 8K (8, 192 x 4, 320) | Kev txhawb zog li 8K (8, 192 x 4, 320) |
| Kev sib piv | VP9 yuav siv sij hawm xya zaus dua encode | H.265 tiav 43.3% tsawg ntsis twg ces VP9 |
| Profiles | pom ob profiles | peb pom zoo profiles, cua ntsawj ntshab rau tsib xyoos ntxiv |
| Kev lag luam los tu | Google lawm twb tshaj tawm tias VP9 yuav siv rau 4K cov ntsiab lus ntawm qhov YouTube thiab ua si Google yees duab. Google tau twb partnered nrog rau cov tuam txhab uas muag xws li Intel, caj NPAB, Broadcom, Marvell, Nvidia, Qualcom, RealTek, MediaTek, thiab Sigma rau manufacturing VP9 tej daim tshaj thiab cheebtsam. | Ua qauv qhia yuav siv thoob NAB, IBC, thiab lwm yam txheej xwm pib 2012 tuam txhab uas muag xws li ATEME, Broadcom, Thomson, Harmonic, Ericsson, Qualcom thiab lwm yam. Ntxiv lawm nyob encoder/decoder neeg muag khoom software thiab kho vajtse raws li cov ntsiab. |
| Xyoo tuaj | Xub thawj hlis ntuj nqeg 13, 2012 | Tso cai rau lub plaub hlis, 2013 |
| Drawbacks | Tau cov ntaub ntawv kawm UHD tej zaum yuav muaj sib tw ntau raws li qhov yuav tsum tau ntsis npaum li cas yog muab piv rau H.265 siab heev | Approx. 300% computational ntau vim twv ua ntej rau lwm loj thiab kim tsa suab xwm kim. |
Rayburn los te & Sullivan sated, HEVC tsis tau yuav tsum deployed kom txog rau thaum cov encode tas nrho, txiav suab ntawm cov thiab thauj infrastructure yog tsim los. Qhov xwm zoo yog tias tej tuam txhab loj uas muag twb ywj coob H.265. Muaj grumblings ntau heev hauv cov evolution ntawm H.264 thiab ib yam yuav muaj tseeb rau H.265. H.265 yuav tau mus fim txoj kev sib tw ntawm nws cov competitor VP9. Saum toj noj tas, ib sab cov ntaub ntawv twg uas zoo tib yam yog zoo txhua yam.
