Chii ichi: HEVC? Zvikamu zvinokosha zve codec itsva

Sezvaunoziva, isu tose tinoda kuona mafirimu, mavhidhiyo kana kuparidzirwa zvakanaka. Asi maererano nekuchengeta mavhidhiyo pamakombiyuta kune matambudziko akawanda, kazhinji anowanzobatanidzwa nebhanali kusina nzvimbo. Nenguva ichangopfuura, maitiro matsva akaonekwa, uye vashandi vazhinji pakarepo vakanga vane mubvunzo unonzwisisika: "Chii ichi - HEVC?". Ngationgororei zvinhu zvakasiyana siyana zvinoenderana nekushandiswa nekushandiswa kwekodhi itsva.

Chii ichi: HEVC

Kana tichitaura nezvemafirimu akanyorwa kune vhidhiyo inogona kubviswa, kazhinji ukuru we disc yacho pachayo inobata kusarudzwa kwenzira yekubudiswa kwevhidhiyo. Izvochete Blu-ray discs inogona kuchengetera mafirimu mune tsanangudzo yakakwirira uye yakawanda inopfuura 25 GB. Zvisinei, iwe unobvumirana, kuchengeta firimu yakadaro pane dhirairi rakaoma, kunyanya kana simba rayo rakajeka zvishoma, kubva pane chinangwa chekuona zvachose hachibatsiri.

Kuti uite izvi, kukodha kwezvikamu zvinoshandiswa, izvo zvinobvumira kunyange kunze kwekukuvadza kwehutano kuderedza ukuru hwefaira yekupedzisira nekuda kwekugadzirisa nzira dzakasiyana. Uye muchiito chii ichocho? HEVC iri kure nekododhi yakanyanya kunyanya, inogona kutaurwa, kunyange kuchinja mumunda wevhidhiyo. Asi chii chisingagutswi nevateereri vhidhiyo yepamusoro, yekare H.264 codec?

Kukwanisa Kubudirira Video Coding: Coding Basics

Kuti uite izvi, unofanirwa kunzwisisa zvinonyoreswa zvekunyora coding. Pfungwa yacho ndeyekuti rimwe remabasa makuru rinotambidzwa nekushandiswa kwepamusoro. Pamusoro peH.264, iyi 16 x 16 kana mazana 256 pixels.

Kune imwe nzvimbo itsva yeH.265, nzvimbo yakadaro inogona kuva yakakura katatu! Uye kana tikatarisawo teknolojia yezvigadziriswa mabheji, apo hukuru hwebhande hunotorwa zvakananga nehurongwa hwehutano pachahwo panguva yekudzvinyirira, hazvisi zvakaoma kufungidzira kuti codec itsva ndiyo, kureva, iyo "inotenderera" kune yakasarudzwa uye nhasi inotsigira 8k (8192 x 4320 pixels ). Iwe unogona kuwedzera pano zvakare basa rekufananidza kukodha. Nokudaro, codec ye HEVC yemhando yepamusoro yemifananidzo inokubvumira kuderedza bitrate, uye zvinoenderana, faira refaira. Nzvimbo inoponesa pakuenzanisa neH.264 inogona kusvika 25-50%!

Kutsigira 4k uye 8k: inobatsira sei?

Nekubudirira kwekushandisa codec yakadaro, pakutanga kwekuoneka kwayo, haana kuwana mukurumbira wakawanda. Zvakanga zvakakonzerwa nekuti ndiyo chete yakasimba uye yemazuva ano mapikicha chips GeForce 970 kana 980 inogona kutsigira mamiriro matsva.

Kutaura zvazviri, kukodhidzira pachake pane mamwe masimba asina simba zvakatora maawa 10-12. Nokudaro, kubva pakuona kwemaonero, kushandiswa kwemaitiro matsva kwakanga kusingabatsiri.

Nokufamba kwenguva, mamiriro acho akachinja, uye ikozvino unyanzvi hwekombiyuta hunobva paH.265 hunotanga kushandiswa pose pose. Mukutaura kwekuchengetedzwa kwemari inofananidzwa neH.264 inogona kupiwa muenzaniso wakanaka. Pakugadziriswa kwe 720p, kuponeswa kunenge 25%, uye pasi pemamiriro ehutano 4k - kupfuura 50%. Nenzira, kana ukashandisa rip Blu-ray disc, ukuru hwepurogiramu yepakutanga inogona kuderedzwa kanenge ka 10 (iyo "inorema kupfuura 3 GB")!

Main innovations

Kana iwe ukatarisa zvimwe zvezvinhu zvitsva, pakati pezvose zvinoratidzwa mune zvinodiwa zve codec itsva, unogona kuona zvinotevera:

• Kutsigira kwePamusoro 8 ne10 pfupi zvinyorwa (mune maonero - 12 bits);
• Kuvapo kwemaviri-dimensional akaparadzana, asingagoni kugoverwa uye kutungamirirwa nekushambadzira mazita ASF;
• Mhanho inopihwa nekururama kwe 1/8 pixel;
• Kushandisa kugadzirisa kukanganisa kukanganisa nekusarudza matrix mukugadzirisa kwekodhi;
• Kuvapo kwechirongwa chekuenzanisa coding ye motion motion;
• Intra-dependent mode-dependent coding.

Zvechokwadi, unogona kupfuurira mberi urongwa. Zvisinei, kunyange izvozvi zviratidzo kumunhu chero upi zvake unyanzvi anotarisana nevhidhiyo encoding, anogona kutaura zvakawanda.

Ndeipi software inoshandiswa kutarisa mafirimu mune imwe mhando

Saka, codec pachayo yakarongwa. Kuti iyo (HEVC), ndinofunga, yakatoita zvishoma zvakajeka. Iye zvino tinoshandura kune dambudziko rinonyanya kukurudzira, iro, zvechokwadi, rinofadza kune vakawanda vashandisi. Chii chandingashandisa kutarisa vhidhiyo inowedzerwa kuburikidza nekushandura kwatsva?

Muchidimbu, muchidimbu chakareruka, unogona kushandisa software players. Chimwe chezvinhu zvinonyanya kufadza, mukufunga kwevakawanda, ndicho chakakosha uye chakanyanyojekesa Daum PotPlayer yekushandisa. Kana izvi zvisingakodzeri, unogona kushandisa VLC Media Player yakakurumbira, iwe chete unofanirwa kuisa shanduro yezvino, nokuti ndiyo chete yakagadzira-mukutsigira HEVC.

Zvisinei, pasinei nezvose zvinobatsira, tinogona kuona matambudziko akawanda. Zvose izvi zvinoshanda chete kune chokwadi chokuti paIndaneti iyezvino haugoni kuwana mafirimu akawanda kana mavhidhiyo akaiswa nechishandiswa shanduro itsva. Chinotonyanya kuodza mwoyo ndekushayikwa kwekutsigirwa nevatengesi. Kana shanduro dzepurogiramu dzichiri kugadziriswa nenzira yakadaro, vadziri veimba yemitambo kana Smart TV havasi kukurumidzira kuziva kusunungurwa kwezvinhu zvinotsigirwa neH.265. Uye codec pachayo, kunyange ichionekwa sechinoshanduka, haisati yawana kuparadzirwa kwakakosha. Asi ini ndinoda kutarisira kuti ichi ndicho chiitiko chenguva pfupi.

Panzvimbo yehuwandu

Pano muchidimbu uye zvose zvinosangana nehutano hutsva mumavhidhiyo encoding. Zvechokwadi, haisi iyo yose yekugadzirwa kwekombiyuta itsva yakabatwa pano, kunyange zvakadaro, kunyange ruzivo rwakakosha ruchatibatsira chero mupi wekusarudza kutsvaga pamusoro pezvinhu zvikuru zvitsva, kushanda kwekushandiswa uye kushandiswa kwakashandiswa kwezvinhu zvakadaro. Asi chaizvoizvo, kakawanda, vanogona kuchinja pfungwa dzedu dzose nezvehutano uye kugadziriswa kwevhidhiyo ruzivo. Uye, zvinoita sokuti, munguva pfupi iri kurega H.264 inowanikwa ichaenda mune zvishoma, nokuti teknolojia haina kumira. Kana iwe uchitora nguva yakareba, zvichave zvakanyanya kuitika kuti chimwe chinhu chakanyanya kusimba chichagadzirwa pane HVC codec.