Yakanaka Sei WebRTC Screen Kugovera, Chaizvoizvo? Ndakaisa 4 Codecs kuMuedzo

Ndagara ndichida kuziva kuti macodecs akasiyana sei kana zvasvika pakugovana skrini pamusoro peWebRTC. Saka, ndakasarudza kuzvitsvakira ini nekuyedza mana anonyanyozivikanwa: VP8, VP9, H.264, uye AV1. Kuti ndive nechokwadi chekuti mhinduro dzaive dzakasimba, ndakamhanyisa bvunzo mumhando dzakasiyana dzemukati uye netiweki mamiriro. Ini handina kungovimba nekuona zvinoonekwa - ndakashandisa furemu-ne-frame kuenzanisa, yakaverengerwa Peak Signal-to-Noise Ratio (PSNR), uye ndakadhonza akadzama WebRTC stats kuti ndiwane yakajeka, inofambiswa nedata. Kuti ndiende nhanho mberi, ndakatovaka tsika Chrome plugin inoteedzera kushandiswa kweCPU panguva yeese encoding uye decoding. Izvo zvakandipa kutarisa kwakanaka kwekuti imwe neimwe codec inobata sei system performance - nekuti mhando yakanaka, asi kwete kana komputa yako iri pamoto ichiedza kuenderera. Ndakatarisa makiyi metrics senge bitrate, furemu chiyero, resolution, quantization (QP), PSNR, uye CPU mutoro. Kubva pane zvese izvo, ndauya nemazano mashoma anoshanda kubatsira chero munhu ari kuyedza kukwidziridza WebRTC skrini yekugovera kune avo ega ekushandisa. Pamusoro pekuedza Nei Kugovera Screen Kusiri Nyore Sezvinotaridzika Kana iwe wakambogovana skrini yako panguva yevhidhiyo kufona uye wakaona kudonha kwemhando - kana vhidhiyo iri kuita choppy - hausi wega. Kuchengeta kugovera skrini kwakapfava uye kwakatsetseka kwakaoma kupfuura zvazvinoita. Dambudziko? Zvose zvinoenderana zvakasiyana-siyana. Zvimwe zvirimo zvichiri, sedhidhi remasiraidhi kana gwaro. Dzimwe nguva, uri kugovera vhidhiyo inofamba-famba. Aya marudzi akasiyana ezvinyorwa anoda zvinhu zvakasiyana zvakanyanya kubva kucodec. Semuenzaniso, vhidhiyo inofamba nekukurumidza inodya toni yebandwidth, nepo static mifananidzo inonzwa zvakanyanya kune compression zvigadzirwa zvinogona kuita kuti zvitaridzike zvisina kujeka kana kuvharika. Kanda mune-chaiyo-yepasirese nyaya dzepamhepo senge kurasikirwa kwepaketi kana kudonha kwebandwidth, uye zvinhu zvinotonyanya kuipa. Ndosaka kusarudza iyo codec chaiyo - uye kunyatso-tuning mashandiro ayo - kwakakosha kuita kuti skrini igovane zvese zvemhando yepamusoro uye zvinoteerera. Iko kwatove nekutsvagisa kwakawanda kunze uko pamusoro pekuti vhidhiyo macodecs anoita sei mune zvakajairika kutenderera mamiriro. Asi kugovera skrini kune zvayakanakira. Haisi yekungoona vhidhiyo - ndeyekutaurirana munguva chaiyo, uye mhando dzemukati dziri pese pese. Izvi zvinoreva kuti tsvakiridzo yakajairika haishande nguva dzose. Zvandakaronga Kuita Ini ndaida kuchera zvakadzama mune iyi chaiyo yekushandisa kesi. Chinangwa changu chaive chekuona maitiro akasiyana macodec kana zvasvika pakugovana skrini, kunyanya pasi pezvipingamupinyi zvepasirese semhando dzakasiyana dzemukati uye zvisingatarisike network mamiriro. Kuti ndiite izvozvo, ndakagadzira nzira yekuongorora mhando yekugovera skrini nenzira kwayo sezvinobvira - kwete kungobva pamaratidziro ayo, asi inotsigirwa nemametric akasimba uye data. Ndiri munzira, ndakadzidza zvakawanda nezve macodecs anobata zvakanyanya uye maitiro ekugadzirisa zvinhu kuti zviite zvirinani mumashandisirwo enguva chaiyo. Chinhu chimwe chakakurumidza kujeka: kugovera skrini kuita kunoenderana kugovera. Vhidhiyo inomhanya-mhanya inoita zvakasiyana zvakanyanya kubva kugwaro rakamira kana kuti inononoka kupenya nepeji rewebhu. nezvauri Kuti zvinhu zvirambe zvakaringana uye zvienderane, ndakaita chokwadi chekuti bvunzo dzese dzaimhanya nemamiriro akafanana - kugadziriswa kwakafanana, nzvimbo imwechete yekutanga, uye nguva yakafanana. Nenzira iyo, ndaigona kuva nechivimbo chekuti mhedzisiro yacho yaive yese yekodec performance, kwete imwe tsaona yekusiyana. Ini ndakagadzira maviri akasiyana bvunzo makesi kutevedzera chaiyo-yehupenyu skrini yekugovana mamiriro: - Ichi chaive chikamu chaicho chevatyairi vemidhudhudhu vachimhanyidzana nemusango. Yakawanda yekukurumidza kufamba, yakatsanangurwa nzvimbo, uye inogara ichichinja yekuona nharaunda - yakanakira kusunda miganhu yekumanikidza. Vhidhiyo yepamusoro-inofamba - Ini ndakavaka iri nyore HTML peji ine mavara nemifananidzo, ndokushandisa JavaScript kuipepeta nekumhanya kwakadzikama. Inoteedzera chiitiko chekushandisa chakajairika sekugovera gwaro kana kuverenga kubva pawebhu peji. Auto-scrolling text Mhando mbiri idzi dzemukati dzakandipa musanganiswa wakanaka kuti ndiedze kuti codec yega yega inobata sei matambudziko akasiyana - kubva mukufambirana nekufamba kusvika pakuchengetedza kujeka mune mamwe mapikicha. Magadzirirwo andakaita Zvese Kuti ndiedze nemazvo macodecs, ndaida setup yakasimba inogona kutora - zvese zviri kutumirwa uye zvakagamuchirwa. Ndakatanga nechishandiso chinonzi (Nenzira yaunokwanisa kudzidza nezve chishandiso ichi uye nezvimwe zvakawanda mune imwe post yangu: “ “), iyo yakanakira kuvhiringa neWebRTC vemukati. Ndakapedzisira ndazvigadzirisa zvishoma kuti ndibate zvirinani kugovera skrini uye kuve nechokwadi kuti ndaigona kurekodha ese ari kubuda uye anouya evhidhiyo hova. Kumhanya kwega kwega kwakandipa mafaera maviri evhidhiyo - imwe yezvakatumirwa uye imwe yezvakatambirwa - izvo zvandakashandisa gare gare kuongororwa-ne-parutivi. zvese webrtc-sandbox Kudzidza WebRTC Mukuita: Zvakanakisa Zvishandiso uye Demos Asi handina kumira pavhidhiyo. Ndaida kurondawo zvaiitika pasi pe hood. Nezve izvo, ndakadhonza yakadzama WebRTC stats zvakananga kubva kuChrome browser. Aya manhamba akandipa hwindo remabatiro akaita codec yega yega uye nemafambiro akaita network yakateedzerwa panguva yebvunzo yega yega. Chimwe chidimbu chikuru chepuzzle chaive - uye izvo zvakazove zvidiki. Chrome yakajairika vhezheni haitenderi maplugins kutarisa CPU mutoro kune ega matabo, saka ndakashandisa kusimudzira kuvaka kwebrowser uye ndakanyora yangu plugin kuti nditenderere ipapo. kushandiswa kweCPU Ini ndakanangana nekuyera mashandisirwo eCPU kubva kune iyo tab yaitumira kana kugamuchira iyo skrini yekugovana. Nenzira iyo, ini ndakabvisa zvisina hukama kupa mabasa kubva kune zvimwe zvikamu zvebrowser. Sezvo zvese kutumira uye kugamuchira zvakaitika mune imwechete tab, nhamba dzandakawana dzaive maonero akasanganiswa - asi zvichiri padyo nezvawaizoona mune chaiyo-nyika yekushandisa kesi. (Spoiler: encoding kazhinji inorova iyo CPU yakaoma kupfuura decoding.) Kuunganidza Iyo Data: 157 Muedzo Unomhanya Gare gare... Kamwe kuseta kwange kwagadzirira, yaive nguva yekumhanyisa izvo chaizvo zviedzo - uye ndakamhanya zvakawanda. Ndakadzokorora bvunzo pamushini mumwechete, kakawanda, ndichishandisa akasiyana network mamiriro uye macodec marongero kuti ndione kuti zvinhu zvakamira sei. Pakazara, ndakaunganidza , kuve nechokwadi chese musanganiswa wemamiriro ebvunzo akamiririrwa zvakanaka. 157 data mapoinzi Izvi zvakandipa dhatabheti rakasimba rekushanda naro uye rakabvumira kumwe kudzika-dive ongororo mune maitiro ekugovana skrini muWebRTC pasi pemamiriro akasiyana. Izvi ndizvo zvandaiedza chaizvo: : Ndakashandisa marudzi maviri ekugovera skrini kuratidza zviitiko zvekushandisa zvakajairika: Vhidhiyo Type - Chaiyo-yenyika tsoka ine matani epixel inoshandura yega furemu. Yepamusoro-inofamba vhidhiyo - Zvizhinji zvinoonekwa zvakamira, asi zvine mapixels anochinja chinzvimbo semanyoro ezvinyorwa. Auto-scrolled text : Ndakaedza mana anonyanya kufarirwa skrini-kugovera macodecs: Codec AV1 H.264 VP8 VP9 Sezvo bandwidth ichiita basa rakakura mumhando yevhidhiyo (kunyanya mukufona kwevhidhiyo), ndakateedzera akasiyana etiweki mamiriro kuti ndione kuti kodeki yega yega yakabata zvakasimba kana kuchinjika bandwidth. Network Bandwidth Nekusanganisa uye nekufananidza izvi zvinosiyana nenzira yakarongeka, ndakakwanisa kutevedzera chaiyo-yepasirese yekugovanisa zvimiro - rudzi rwawaizosangana narwo parunhare rwevhidhiyo, panguva yedemo repamoyo, kana muchikamu chekudyidzana chiri kure. Kugadzirisa maGlitches: Magadzirirwo andakaita kuti Miedzo Iwedzere Kuvimbika Sezviyedzo zvakawanda, mashoma ekutanga anomhanya haana kufamba zvakanaka sezvandaitarisira. Matambudziko maviri makuru akauya pakarepo: Pakutanga, ndaitanga kugovera skrini nemaoko - ndichidzvanya bhatani kuti ndibvise zvinhu. Dambudziko? Zvaive zvisingaite kuwiriranisa kutanga kwekurekodha nekutanga kwevhidhiyo zvirimo. Izvi zvaireva kuti bvunzo dzese dzekumhanya dzaive nenguva yakati siyanei, izvo zvakasiya kuenzanisa. Manual Kutanga = Messy Nguva. Kunyangwe iyo nguva yaive chaiyo, chaiyo-nguva vhidhiyo ine yayo quirks. Nekuda kwe encoding, decoding, uye kunonoka kwenetiweki, nzizi dzakatumirwa uye dzakagamuchirwa hadzina kumbomira zvakanaka. Izvi zvakaita kuti furemu-ne-furemu yemhando yekuenzanisa kuve isingaite. Yakatumirwa vs. Yakagamuchirwa = Kunze kweKubatanidza. Kuti ndigadzirise nyaya idzi, ndakagadzira akati wandei akakosha ekuvandudza: : Panzvimbo pekutanga nemaoko zvese, ndakanyora imwe kodhi kuwiriranisa kutanga kwevhidhiyo kana kupurudzira zvinyorwa nemaitiro ekurekodha. Nenzira iyo, bvunzo dzese dzakatanga panguva imwe chete pamativi ese - dambudziko rakagadziriswa. Programmatic Syncing : Kune iyo desync nyaya, ini ndakawedzera diki QR kodhi yakavharika kune yakagovaniswa vhidhiyo. Ichi chicherechedzo chidiki chakaita sechitambi chenguva - chakanditendera kuti ndienzanise mafuremu pakati peatumirwa uye akagamuchirwa nzizi nemazvo. Kamwe kamwe, furemu-ne-furemu yekuongorora yakave inogoneka (uye nzira yakanyatsojeka). QR Code Frame Matching Paive nechimwezve chinhu chandaifanira kuzvidavirira: . Imwe yeWebRTC inotonhorera maficha ndeyekuti inogadzirisa otomatiki mhando yevhidhiyo zvichibva pane iripo bandwidth. Asi kugadzirisa ikoko hakuitike ipapo - zvinotora masekonzi mashoma kuti ugadzikane. Saka, ndakawedzera kunonoka kupfupi ndisati ndatanga kurekodha chaiko. Izvi zvakapa sisitimu nguva yekugadzika pane yakatarwa bitrate, saka mibairo yacho yaizoratidza iwo chaiwo mhando yawaizowana mushure mezvinhu kunyange kunze. WebRTC's adaptive bitrate Shanduko idzi dzakaita kuti kuedza kuve kwakavimbika uye kwakandipa chivimbo chekuti data randaiunganidza rairatidza maitiro ekugovana skrini munyika chaiyo. Zvandakayera (Uye Nei Zvichikosha) Ndakaunganidza data rakawanda panguva yekuyedzwa uku, asi kuti ndichengetedze zvinhu zvakatwasuka uye zviri nyore kuenzanisa, ndakatarisa pane mashoma epakati metrics anonyatso taura nyaya yemabatiro anoita codec imwe neimwe mune yekugovana skrini. Hezvino zvandakatarisa: Frame Rate Izvi zvinondiudza kuti mafiremu mangani pasekondi akaiswa encoded, akatumirwa, uye akagashirwa. Chiratidzo chakanaka chekuti vhidhiyo yekuyerera inonzwa sei - yakakwira furemu chiyero kazhinji inoreva chiitiko chemvura. Resolution Resolution ndeye zvese nezvekuti ingani ruzivo rwekuona rwakachengetwa. Ndakatsvaga nhamba yemapixels pafuremu padanho rega rega (rakatumirwa nekugashirwa) kuti ndione kana macodecs akabata pamhando yemufananidzo kana kuidonhedza kuchengetedza bandwidth. Vhidhiyo Hunhu Ndakashandisa mashoma akakosha metrics pano: - Iyo yakaderera QP inowanzoreva zvirinani mhando. Quantization Parameter (QP) - Izvi zvinopa pfungwa yenhamba yekuti yakawanda sei iyo vhidhiyo yakagamuchirwa inosiyana kubva kune yekutanga. Higher = nani. Peak Signal-to-Noise Ratio (PSNR) Kushandisa CPU Kuita kweCodec hakungori pamusoro pezvaunoona - zviri zvakare nezve izvo muchina wako uri kuita kuseri kwezviitiko. Ndakayera kuti ingani simba reCPU raishandiswa kukodha uye kudhirodha panguva yega yega bvunzo, yakajairwa nekufamba kwenguva, kuona kuti ndeapi macodecs akareruka uye ndeapi ari mahogi ezvekushandisa. Nekutyora zvinhu nemametric aya, ndakakwanisa kuenzanisa macodec kwete pamhando chete, asiwo pakutsvedzerera, kushanda nesimba, uye kuti arikuda sei. Izvo zvakabatsira kuburitsa panopenya codec yega yega - uye painotamburira - mune chaiyo-yepasi skrini yekugovana mamiriro. Pakupedzisira kuuya kune maResults Yakawanda Sei Yemukati Rudzi Rune Basa? Zvakawanda Kupfuura Zvaungafunga Chimwe chezvinhu zvinokatyamadza zvekutora kubva mukuedza kwangu kwaingova kuti rwemukati rwauri kugovera runokanganisa sei kugovera skrini - zvese maererano nemhando yevhidhiyo uye mashandisirwo ezviwanikwa. Uye ichi chaive chokwadi kune codec yandakayedza. rudzi yega Pfungwa iri kumashure kwayo yakareruka: kana mamwe mapixels achichinja kubva pafuremu kuenda kune furemu (senge muvhidhiyo inokurumidza kufamba), sisitimu inofanirwa kushanda nesimba. Izvi zvinoreva kuti yakawanda bandwidth inodiwa, uye CPU yako inofanirwa kumhanyisa zvakanyanya kuti irambe iripo. Tora , semuenzaniso. Pandakaishandisa kugovera 1.5-megapixel skrini, bandwidth inodiwa yaisiyana zvakanyanya zvichienderana nezvaigovewa. Mune imwe nyaya, uko zvirimo zvaive zvakanyanya kusimba, AV1 yaifanira kusundira zvakanyanya data kuti ichengetedze rukova. Ndakatora izvi , rinoratidza kuti kuomarara kwemukati kunokanganisa sei kushandiswa kwebandwidth. AV1 mugirafu rinotevera Asi haisi bandwidth chete - hardware yako inozvinzwawo. inoratidza mashandisiro ekushandiswa kweCPU zvichienderana nezviri kugoverwa. Zvekare, uchishandisa AV1 semuenzaniso, unogona kuona zvakajeka kuti zvakanyanya kuomarara zvinoonekwa zvinoda simba rakawanda reCPU kuchengetedza zvinhu zvichimhanya pachiyero chakafanana uye kugadzirisa. Iyo inotevera girafu Ichi hachisi chinhu cheAV1 chete. Ese macodecs anovimba nemisimboti yakafanana yekukodha uye decoding vhidhiyo, saka ungatarisira kuti varatidze maitiro akafanana - asi iyo data inotaura imwe nyaya. Iyo CPU mutoro haungochinji nezviri mukati, zvakare inoshanduka zvichienderana nekuti yauri kushandisa. ndeipi codec Kuita kuti izvi zvive nyore kuenzanisa, ndinoisa pamwe chete , iyo inoratidza kuti yakawanda sei CPU yega yega codec inoshandiswa pakutepfenyura 1.5-megapixel vhidhiyo painotenderera makumi maviri nemana mafuremu pasekondi - yakanaka yakajairwa setup yekugovanisa skrini yakatsetseka. Mhedzisiro yacho inoburitsa mimwe misiyano mikuru pamashandiro anoita codec yega yega kana zvasvika pakushandisa Hardware yako. tafura inotevera Codec/CPU AV1 H264 VP8 VP9 Motion 287% 213% 270% 364% Text 175% 130% 179% 198% Saka, kana iwe uri kuvaka kana optimize chimwe chinhu chinovimba neWebRTC skrini yekugovera, yekutora iri pachena: zvese zvirimo uye yako sarudzo yekodhi nyaya. Zvakawanda. Codec Showdown: Frame Rates, CPU Load, uye Iwo Chaiwo Mutengo Wemhando Kana zvasvika pakugovana skrini, chimwe chezvinhu zvekutanga zvaunoona ndechekuti yakatsetseka (kana kwete) iyo vhidhiyo inonzwa. Ndipo panopinda . Kana urikugovera zviri pamusoro-soro, sekutambazve kwevhidhiyo kana maanimation, mwero wepamusoro we furemu wakakosha kuti udzivise kuyerera, kunetsa kuona. furemu rate Kune ichi chikamu chekuyedza, ini ndakatarisa pane furemu chiyero chekuita mumakodeki akasiyana ndichichengeta zvimwe zvese zvakagara: kugadziriswa kwakafanana (anenge 1.5 megapixels) uye zvakafanana zvirimo pabvunzo yega yega. Ndakashandisa WebRTC marongero kuti ndive nechokwadi chekuti resolution yakaramba yakakiyiwa mukati mebhodhi. contentHint , unogona kuona mabatiro akasiyana macodecs anobata-high-motion content sezvo bandwidth inowedzera. Pa x-axis: bitrate muMbps. Pa y-axis: furemu chiyero mumafuremu pasekondi (fps). Mumufananidzo unotevera Hezvino izvo zvakamira pachena: zvakadhonzera mberi kana bandwidth yarova 2 Mbps kana kudarika, zvese zvichiunza 20+ fps - chiitiko chakapfava chinogoneka kunyangwe pakubatana kwakanaka kwe3G. H.264 neAV1 uye haina kuramba zvakare. Ivo vakatenderedza inosvika hafu yechiyero chechimiro pasi pemamiriro akafanana, uye vainyatsoda 4 Mbps kana kupfuura kuti vanzwe kushandiswa - izvo zvisingawanzo kuitika pazasi-magumo network. VP8 VP9 Ipapo ndakaenda kune - peji inotenderera zvishoma nezvishoma - kuti ndione maitirwo emakodeki kana isiri yakawanda iri kuchinja pakati pemafuremu. yakaderera-inofamba zvemukati Zvisingashamisi, zvose dzakatoita zviri nani pane izvi, neAV1 . Ndiko kutenda kune chinhu chinodaidzwa kuti , icho chinoita kuti AV1 isvetuke-encoding zvikamu zvescreen izvo zvisati zvachinja. Inoshanda zvinoshamisa kune static kana semi-static skrini yekugovera. H.264 neAV1 ichibuda pamusoro Intra Block Copy Mune , unogona kuona mabatiro anoita AV1 aya mamiriro ekufamba-famba, ichichengeta kushandiswa kwebandwidth zvakaderera zvakanyanya uku uchichengetedza mhando yepamusoro yekuona. girafu rinotevera Asi ... pane kuchinjana. AV1 inogona kukupa zvirinani zvinoonekwa uye compression, asi . unoratidza izvi zvakajeka: AV1's CPU kushandiswa kunokwira zvishoma nezvishoma sezvo bitrate ichiwedzera, ichipfuura H.264 nepfuti refu. H.264 ine bhenefiti hombe pano nekuda kwekupararira , iyo inochengeta iyo CPU mutoro wakaderera uye wakagadzikana. zvakare inodya yakawanda CPU Mufananidzo unotevera kwehardware acceleration , zvinonakidza, inoshandisa CPU kupfuura AV1 - ichitevera maitiro akafanana asi nepamusoro pepamusoro. Ose ari maviri VP9 uye AV1 anovimba neakaomesesa algorithms kuunza mhando yakanaka, asi izvo zvinouya nemubhadharo: iwo anorema mahitter pa processor yako. VP9 kunyange yakawanda Pakave nekumonyoroka pandakaongororazve . Panguva ino, yakanyatso taridzika zvakanaka - kushandisa shoma CPU pane AV1, sezvakaratidzwa . zviri pasi-kufamba VP8 uye VP9 mugirafu rinotevera AV1, kunyangwe yakagadzirwa nekugovana skrini mundangariro, ichiri kushandisa yakanyanya CPU. Sei? Ese magadzirirwo ayo anoibatsira kudzvanya-yepamusoro-inofamba vhidhiyo inowedzera pamusoro - kunyangwe pasina zvakawanda zviri kuitika pachiratidziri. Chikonzero chikuru cheizvi? . Nepo decoding ikareruka, encoding ichiri kunyanya kuitwa musoftware - uye iro ibasa rakasimba reCPU, kunyanya muzviitiko zvenguva-chaiyo sekugovana skrini uko zvese encoding uye decoding zvinoitika nguva dzose. AV1 ichiri kushaya yakapararira hardware encoding rutsigiro Apa ndipo panowanikwa zvinhu zvekunyengerera kune senge malaptop uye mahwendefa. Pasina kukwidziridzwa kwehardware, macodecs seAV1 anogona kukurumidza kudonhedza simba uye hogi zviwanikwa - hazvina kunaka kana iwe uri munzira. Kusvikira zvirinani rutsigiro rwehardware rwawedzera kuwanda, AV1's advanced maficha anouya neinooneka mutengo wekuita. inotakurika madivayiri Codecs uye Resolution: Chii Chinoitika Kana Iwe Unoisa Pamberi Rate Rate? Kusvika pari zvino, mibairo yandakagovera yakabva kubvunzo dzakaita kuti sarudzo irambe iripo. Kana bandwidth yasvika yakasimba, sisitimu yaizopindura nekudzikisa - izvo zvine musoro kune zvinhu zvakaita senge static content kana zvinyorwa. Asi ko kana chinangwa chiri chekuti , kunyangwe izvo zvichireva kuzvipira kugadzirisa? chiyero zvinhu zvifambe mushe Kuti ndiongorore izvi, ndakamhanyisa seti nyowani yezviyedzo uko WebRTC yakagadziridzwa kuisa pamberi peiyo panzvimbo. Izvi zvakaitwa pachishandiswa marongero muWebRTC, iyo inoita kuti uudze bhurawuza chinonyanya kukosha - kugadzirisa kwepamusoro kana kufamba kwakatsetseka. furemu chiyero contentHint Ini ndakavavarira kubata furemu chiyero pane inowirirana , iyo inozivikanwa zvakanyanya seyakanaka nzvimbo yekutarisa yakatsetseka, yakagadzikana. Kuwana izvo zvakagara zvakaoma - kutenderera kunoenderana kunoreva kuti panogara paine kuchinjika - asi mhedzisiro yacho yakapa nzwisiso yakakosha yekuti codec yega yega inobata sei kutengeserana uku. 30 fps Kubatsira kuongorora maitiro aya, ndakaunza metric itsva: Yakatumirwa Pixels paSekondi = Frame Rate × Resolution Izvi zvinopa mufananidzo wakazara pane kungotarisa paFPS kana kugadzirisa chete. Inoratidza kuti yakawanda sei data yekuona iyo codec iri kunyatso kuendesa pasekondi pasi pemamiriro akasiyana. Yevhidhiyo inofamba-famba, - uye nemuchero unooneka. Kunyangwe pakaderera bitrate, yakakwanisa kufambisa zvakanyanya mapixels pasekondi kupfuura chero imwe codec. Izvi zvinoratidza pachena kuti AV1 inobata sei zvine simba zvemukati kana sisitimu iri pasi pekumanikidzwa kuchengetedza yakakwira furemu chiyero. Ndokumbira utarise : AV1 yakabuda zvakare pamusoro girafu rinotevera Pandakachinjira kune yakaderera-inofamba zvemukati - senge peji rewebhu rine zvinyorwa zvekupuruzira - nzvimbo yekutamba yakawedzera zvishoma. Kuita kwemacodecs ese kwakawedzera yunifomu sezvaungawana . Nekudaro, , kunyanya pakakwirira bitrate. Kukwenenzvera kwayo kwakaibatsira kuchengetedza simba rekufambisa pasina kuwedzera zvakanyanya kushandisa zviwanikwa. pamufananidzo unotevera AV1 ichiri nekutungamira Zvose izvi zvinorevei mukuita? Zvakanaka, kana kesi yako yekushandisa inosanganisira inochinja, yakakwirira-inofamba zvinoonekwa - senge vhidhiyo mafambiro, mhenyu mhenyu, kana mutambo kutenderera - , uye AV1 inoratidza kuve inonyanya kugona munharaunda iyoyo. kuisa pamberi peiyo furemu chiyero chinogona kuita mutsauko mukuru Kunyangwe kune zviri kunonoka kufamba, AV1 inoramba ichiratidza simba. Kunyange mutsauko ungave mudiki, unogara uchikwanisa kutumira mamwe data rekuona - zvichireva kuti zvirinani mhando panguva imwechete kana yakaderera bandwidth - nekuda kwemaitiro ayo epamusoro ekumanikidza. Muzviitiko zvese izvi, iyo metric yakaratidza kubatsira pakunzwisisa kuti macodecs chiyero kugadzirisa uye furemu chiyero kana bandwidth ishoma. Uye kuita kweAV1 pasi peaya mamiriro anoisimbisa seyo inonyanya kugona sarudzo - chero system yako ichigona kubata zvimwe zveCPU zvinoda. "yakatumirwa pixels pasekondi" Mufananidzo Wakachena Sei? Ngatikurukurei PSNR Kupfuura furemu mareti, kugadzirisa, uye kushandiswa kweCPU, pane chimwe chidimbu chakakosha chepikicha yekugovera chidzitiro: Ndipo panopinda . mufananidzo wakagamuchirwa unotaridzika padyo sei kune wekutanga? Peak Signal-to-Noise Ratio (PSNR) PSNR ndiyo metric inoshandiswa zvakanyanya kuyera kunaka kwevhidhiyo yakamanikidzwa. Inokuudza kuti yakawanda sei kukanganisa - kana "ruzha" - yakaunzwa panguva yekukodha. Inopimwa muma , uye mutemo wegunwe uri nyore: . A high PSNR zvinoreva kuti chifananidzo chinotaridzika chaizvo sechakatanga; zvibodzwa zvakaderera zvinoreva kuti pane kuderera kunoonekwa zvakanyanya. decibels (dB) iyo yakakwirira, iri nani Kuti ndiise izvi muchirevo, ndakaedza PSNR hunhu mumacodecs mune maviri akasiyana mamiriro: imwe uko ndiko kunonyanya kukosha, uye imwe uko chinotungamira. Maedzo ese ari maviri akashandisa zvakafanana kuti zvinhu zvirambe zvichienderana. kugadzirisa chiyero -yepamusoro-inofamba vhidhiyo yemukati Mugadziriro iyi, uko kujeka ndiko kunonyanya kutariswa (kunyangwe kana vhidhiyo yacho ichipera zvishoma), , ichipa zviono zvakapinza nekukanganisa kushoma. Isarudzo yakasimba kana kutsvedzerera kusiri kunetsa. H.264 yakanyatsoita zvakanaka Kana chinangwa chichichinjika kuchengetedza kufamba kwemvura, , kunyanya pakakwirira bitrate. Iyo inokwanisa kuchengetedza mhando yemufananidzo kunyangwe ichimanikidza zvine hukasha kurova furemu chiyero. AV1 inobuda pamberi Nepo misiyano yePSNR pakati pemakodeki isingawanzo shamisa, inosimbisa kwaunoita kana uchisarudza codec. Vamwe vanokoshesa kupinza; vamwe vanovavarira kufamba kwakatsetseka - uye zvichienderana nekesi yako yekushandisa, imwe inogona kunge yakakodzera pane imwe. kutengeserana Ipapo ndakamhanyisa bvunzo dzakafanana zvakare, panguva ino ndichishandisa - chimwe chinhu chinosimbisa kukosha kwekugadzirisa uye kujeka. zvinyorwa zvakapepetwa Kana kufamba kuchiiswa pamberi, PSNR kukosha kune ese macodecs anotaridzika akafanana. Izvo zvirimo hazvisi kuchinja zvakanyanya, saka misiyano yekumanikidza nzira haina zvakanyanya kukanganisa pamhando yemufananidzo. Apa ndipo panowanikwa zvinhu zvinonakidza. Nekugadziriswa sekukosha, kwemamwe macodecs - kunyanya pakakwirira bitrate. Kuita kwayo pano kwakasiyana. AV1 inokwevera kumberi Sei? AV1 inosanganisira chaiyo optimizations yekubata static, inodzokorora zvemukati senge zvinyorwa. Izvi zvinoibvumira kuchengetedza , kudzivirira zvigadzirwa, uye kumanikidza zvakanyanya. Izvi zvinoita kuti AV1 ive sarudzo yakanakisa yekushandisa makesi senge kugovera magwaro kana kodhi mafambiro - chero kupi . yakakwirira mufananidzo kutendeka kwakajeka, kuverengeka kunonyanya kukosha Muchidimbu, PSNR inobatsira kuratidza yakavanzika asi yakakosha dimension yemhando yekugovera skrini. Kunyangwe iwe uchiisa pamberi pekufamba kana kupinza, kunzwisisa maitiro emacodecs pasi pezvipingaidzo zvakasiyana kunoita kuti usarudze iyo yakakodzera yebasa racho. Chii Chibvumirano neQP? Kunzwisisa Compression vs. Hunhu Chimwe chinhu chakakosha mukugovanisa chimiro chemhando chinhu chinonzi , kana . Kana iwe wakambozvibvunza kuti chii chinodzora kuti yakawanda sei ruzivo inorasika panguva yekumanikidza, izvi ndizvo. Quantization Parameter QP Nemashoko akapfava, . QP inoudza encoder kuti anodzvanya sei vhidhiyo Iyo inoreva kushoma kudzvanya uye nani mufananidzo mhando. yakaderera QP Iyo inoreva kuwanda kwekumanikidza - iyo inochengetedza bandwidth, asi inogona kuita kuti vhidhiyo itaridzike zvakanyanya. yakakwira QP Nepo PSNR ichitipa mhedzisiro - huwandu hwemhando yemufananidzo hwakachengetwa - . Saka, ndakatarisa ari maviri. QP inotitaurira kuti encoder yaivavarira chii Muchidzidzo ichi: dzakadhonzwa kubva kune yakajairwa WebRTC metrics. QP tsika yakayerwa mushure mechokwadi nekuenzanisa furemu yega yega yekutanga kune yayo yakagamuchirwa vhezheni. PSNR Apa ndipo pakazonakidza zvinhu. , zvichireva kuti yaichengetedza mhando yemifananidzo zvakanakisa - asi zvakare yaive nemhando kupfuura mamwe macodec. Izvozvo zvinoita sezvinopesana pakutanga pakuona. AV1 yaive neakanakisa zvibodzwa zvePSNR dzeQP dzinokwira zvakapetwa kana Asi heino kubata: , saka zvakakosha hazvifananidzwe zvakananga. A QP ye50 mune imwe codec hazvireve chiyero chakafanana chekutsikirira seQP yemakumi mashanu mune imwe. imwe neimwe codec inotsanangura uye inobata QP zvakasiyana Zvakadaro, maitiro eQP anotiudza chimwe chinhu chinobatsira. Pakati pese macodecs, ndakaona kuti . Izvo zvine musoro - nekuwedzera bandwidth iripo, macodecs anogona kukwanisa kudzikisa compression uye kugadzirisa mufananidzo mhando. sezvo bandwidth inowedzera, QP inoderera Saka kunyangwe isu tisingakwanise kumisa nhamba dzeQP padivi nepadivi pamacodecs, ivo vachiri kuratidza kuti imwe neimwe codec inogadzirisa sei kudzvanya zvichienderana neanowanikwa network mamiriro. Pazasi: . Asi kuronda kuti inochinja sei ne bandwidth inopa nzwisiso inobatsira mune izvo encoder iri kuita kuseri kwezviitiko. Uye yakasanganiswa nePSNR, inopa mufananidzo wakazara weiyo codec maitiro. QP haisi yemhando yepamusoro - ndeyekugadzika Pfungwa dzekupedzisira: Zvinorevei Izvi Zvese kune WebRTC Screen Kugovera Mushure mekunyura mukati mekuita kweWebRTC pasi pehodhi, chinhu chimwe chakajeka: - uye sarudzo yakanakisa inoenderana nezvako zvekutanga uye nharaunda. haasi ese macodecs anogadzirwa akaenzana Heano maitiro akakosha ekutora kubva pane zvangu kuedza: AV1: Yakanakisa Hunhu, Mutengo Wepamusoro AV1 yaigara ichiunza , ndingave ndanga ndichigovera vhidhiyo inofamba nekukurumidza kana kuti zvinyorwa zvishoma nezvishoma. Kutsikirira kwayo kwepamberi uye optimizations inoita kuti ishande zvinoshamisa - asi izvo zvinouya nemutengo. AV1 ine , uye sezvo tsigiro yehardware ichiri kubata, haina kunaka kune yakaderera-powered kana nharembozha . yakanakisa mhando yekuona CPU-nzara parizvino H.264: The Solid All-rounder Kana iwe uchitsvaga , H.264 ichiri sarudzo huru. Inotsigirwa zvakanyanya, hardware-inokwidziridzwa pamapuratifomu mazhinji, uye inoita basa rakanaka munenge mune ese mamiriro - kunyanya kana system zviwanikwa kana hupenyu hwebhatiri chiri kunetseka. chiyero pakati pekuita uye kugona Zvemukati Zvinokosha Kupfuura Zvaunofunga Mhando yezvauri ine simba guru pakuita basa. Yepamusoro-inofamba vhidhiyo inoda nzira yakawanda kubva kuCPU yako uye bandwidth pane static zvemukati senge zvinyorwa kana zvinyorwa. Kusarudza iyo codec chaiyo - uye marongero akakodzera - ezvemukati mako anogona kuita mutsauko mukuru mumhando uye mashandisiro ezviwanikwa. kugovera Kushandiswa kweCPU Haisi Ingori Manyoro Nekuda kwetsika Chrome plugin yandakavaka, ndakakwanisa kuyera kushandiswa kweCPU nemazvo panguva yekugovera skrini. Mhedzisiro yacho yakaratidza , inova yakakosha panharembozha kana munzvimbo dzinonzwa simba. misiyano mikuru mukudiwa kwekodeki yega yega Chii Chinotevera? Kwaigona Kuenda Iyi Tsvagiridzo Kuedza uku kwakavhura musuwo kune mamwe matanho anotevera anofadza. Apa ndipo pandinofunga kuti basa remangwana rinogona kuita zvakatokura. Kuedza paMobile Devices Parizvino, bvunzo dzese dzakaitwa padesktop - asi kugovana skrini kwakangofanana (kana zvisiri zvimwe) . Kuyedza kuti macodec aya anoita sei panharembozha kwaizopa mufananidzo wakazara, kunyanya maererano nekupindura uye mashandisiro emagetsi. pamafoni nemahwendefa Kushanda Kwesimba Kutaura nezvesimba - macodecs haangopisa CPU, anopisa zvakare. Tsvagiridzo yeramangwana inofanirwa kuongorora kuti ndeapi macodecs , kunyanya kune yakareba skrini yekugovana masesheni pamidziyo inotakurika. hupenyu hwebhatiri anonyanya kushanda nesimba AI-Powered Codec Tuning Fungidzira kana WebRTC ichikwanisa kugadzirisa marongero ecodec zvichienderana nezvako zvazvino uye kumhanya kwenetiweki. , iine simba kuwana chiyero chakakwana pakati pemhando uye kuita mune chaiyo-nguva. AI inogona kuita kuti zviitike Kuzviputira Sarudzo yeCodec inopfuura kungoita sarudzo yehunyanzvi - inobata zvakananga kwechiitiko chako chekugovana skrini. Kunyangwe iwe uri kuvaka dhizaini yemusangano wevhidhiyo, chikuva chekushandira pamwe, kana kungokwenenzvera yako wega mafambiro ebasa, kunzwisisa maitiro aya macodec mumamiriro akasiyana kunogona kukubatsira kuita sarudzo dzakangwara, dzinoshanda. kunaka, kutsvedzereka, uye kushandisa zviwanikwa Sezvo WebRTC ichiramba ichishanduka, ndizvo zvichaita maturusi uye matekiniki akaitenderedza. Ndinovimba kunyura kwakadzika uku kunobatsira vamwe kuti vanzwisise zviri kuitika kuseri kwezviratidziro - uye mawaniro ekuwana zvakanyanya kubva pakugovera kwavo skrini. Unoda Kuongorora Iyo Data Pachako? Kana muchida kuchera zvakadzika mumibairo kana kuita ongororo yenyu, ndaita kuti dhatabheti rizere kubva muchidzidzo ichi riwanikwe pano: Dhawunirodha dataset paKaggle Inosanganisira ma metrics akaomeswa echimiro chiyero, resolution, PSNR, QP, CPU kushandiswa, uye nezvimwe - zvese zvakarongwa necodec, zvemukati mhando, uye bandwidth mamiriro. Inzwa wakasununguka kuishandisa kuzviedza zvako, kuenzanisa, kana kungoongorora maitiro eWebRTC mumamiriro akasiyana.