Audio Video Standard (AVS): Ke Eng & U e Sebelisa Neng?

ka kim E tsoetseng pele: July 5, 2022

AVS, kapa Audio Video Standard, ke tekanyetso ea theknoloji ea molumo le livideo e ntlafalitsoeng ke Audio Video Coding Standard Working Group (AVS-WG) ea Chaena.

E fana ka sethala se kopaneng sa meralo le ts'ebetsong bakeng sa nts'etsopele ea li-algorithms tsa likhoutu tsa molumo le video.

Tekanyetso e etselitsoe ho fana ka mahlale a khouto a audio le a video a tšepahalang le a sebetsang hantle a loketseng lits'ebetso tsa mehala le tse tsitsitseng.

Kenyelletso ena e tla hlakisa likarolo tsa maemo a AVS le ho buisana ka hore na ho molemo ho sebelisa AVS bakeng sa likhoutu tsa molumo le video.

Tlhaloso ea AVS

Audio Video Standard (AVS) ke ITU (International Telecommunication Union) e tloaelehileng ea compression ea audio le video e ntlafalitsoeng ke China Multimedia Mobile Broadcasting (CMMB). Sepheo sa AVS ke ho fana ka liphihlelo tse matla tsa multimedia ka tsela e sebetsang ka ho sebelisa mahlale a teng.

AVS e sebelisa sebopeho sa sefate hammoho le ponelopele e lefelloang ke motsamao le ho fetola mekhoa ea likhoutu hore e kenye melapo ea molumo / video hantle ka theko e tlase ha e bapisoa le litekanyetso tse ling tse tsoetseng pele. E ts'ehetsa liqeto tse ngata ho fihlela qeto ea UHD 4K / 8K, e nang le bokhoni bo phahameng ba ho ngolisa ho feta H.265 / HEVC, H.264 / MPEG-4 AVC le li-codec tse ling tse tsoetseng pele. Ka boleng bo holimo le ts'ebetso e phahameng, AVS e fetohile e 'ngoe ea theknoloji e sebelisoang haholo ea compression ea video bakeng sa lits'ebetso tsa multimedia.

Likarolo tsa mantlha tsa AVS li kenyelletsa:
• Litheko tse tlase tse nang le boleng bo botle ba setšoantšo;
• High scalability ho fana ka tenyetseha bakeng sa disebediswa tse fapaneng;
• Tšehetso e tlaase ea latency e nolofalletsang ho etsa liqeto ka potlako;
• Ts'ebetso e netefalitsoeng ea ho bapala lisebelisoa tse fapaneng tse sebelisang sistimi e fapaneng ea ts'ebetso;
• Tšehetso bakeng sa botebo ba mebala ea 10-bit;
• Boholo ba li-macroblocks tsa video tsa 8192 ka foreimi.

Histori ea AVS

AVS ke tekanyetso ea compression ea video le molumo e ntlafalitsoeng ke Audio Video Coding Standard Workgroup ea China, kapa AVS-WG. E ile ea ntlafatsoa e le karabelo ea machaba ho litlhoko tsa indasteri libakeng tsa likhoutu tsa litšoantšo/molumo, ho theha sethala sa tlholisano ea algorithm har'a litsi tsa maemo a holimo tsa machaba.

Liphetolelo tse peli tsa pele tsa AVS li ile tsa lokolloa ka 2006 le 2007 ka ho latellana, ha lekhetlo la boraro (AVS3) le senoloa ka October 2017. Phetolelo ena e ncha e nka monyetla oa tsoelo-pele e kholo ea theknoloji ea compression ea video, ho kenyelletsa le boemeli bo ntlafetseng ba botebo, boholo bo fokotsehileng ba li-block. e eketsehile ho rarahana ha algorithmic ka mekhoa e ntlafalitsoeng ea likhomphutha.

Ho tloha ha e lokolloa ka selemo sa 2017, AVS3 e bone ho amoheloa hohle ka lebaka la bokhoni ba eona ba ho kopanya li-encode/decoding. Ho feta moo, e amohetsoe e le karolo ea lits'ebetso tse 'maloa tsa Virtual Reality/Augmented Reality ka lebaka la meaho e ntlafalitsoeng ea encoding e loketseng ho phallela ka kotloloho ka li-bitrate tse tlase tse nang le latency e nyane.

Ka kakaretso, bokhoni ba AVS bo thehile boiphihlelo bo sebetsang ba multimedia bo ka hlophisetsoang ho ts'ehetsa linyeoe tse fapaneng tsa ts'ebeliso. Ka hona e ntse e sebelisoa ka ho eketsehileng ho pholletsa le mefuta e mengata ea liindasteri tse kang 'nete ea sebele , nnete e ntseng e eketseha , ho fana ka litaba tsa phatlalatso , litšebeletso tsa video mabapi le tlhokahalo , li-server tse holimo-limo le litharollo tsa lipapali tsa maru har'a tse ling.

Melemo ea AVS

Audio Video Standard (AVS) ke maemo a khouto a dijithale a audio le video a lumellang hore ho be le maemo a holimo, khatello e sebetsang hantle le phetiso ea data ea audio le ea video marang-rang a fapaneng. AVS e sebelisoa ho hasa, ho phallela, ho bapala le lits'ebetso tse ling tse ngata tsa multimedia. Karolo ena e tla akaretsa melemo eohle ea ho sebelisa maemo a AVS.

Boleng bo ntlafetseng

Molemo o moholo oa ho sebelisa maemo a AVS ke boleng bo ntlafalitsoeng ba compression ea data. Ho fihlela boleng bona, maemo a sebelisa bitrate e holimo le li-algorithms tse tsoetseng pele ho feta li-codec tsa setso. Sena se bolela hore mecha ea litaba e kentsoeng ka AVS e tla ba ea boleng bo holimo ho feta litaba tse tšoanang tse kentsoeng le li-codec tse ling.

Li-algorithms tse phahameng tsa bitrate le tse tsoetseng pele li thusa ho fokotsa ho buffer le ho hoeleketsa ha video. Sena se bakoa ke ho tiea ho hoholo ha AVS codec ha ho tluoa ho tahlehelo ea liphutheloana le liphoso ho marang-rang a marang-rang a tlase. Ho feta moo, ts'ebetso ena e ntseng e eketseha e ka lebisa tšebelisong e ntle ea polokelo, e lumellang ts'ebetso e ntlafetseng ha o phallela kapa o boloka lifaele tsa mecha ea litaba ho lisebelisoa tse nang le bokhoni bo fokolang ba polokelo.

Ntle le sena, AVS e boetse e fana ka tšehetso bakeng sa khouto ea HDR (High Dynamic Range) e bolelang hore livideo tse kentsoeng ka AVS li ka sebelisa theknoloji ea HDR ho fana ka botebo, phapang le 'mala o nepahetseng ho livideo tse bonts'itsoeng sesebelisoa se nang le HDR joalo ka smartphone kapa tablet. khomphuta. Sena se bolela lits'oants'o tse makatsang ho sa tsotelehe hore na u shebelletse litaba tsa HD lapeng kapa u shebella lifilimi tseo u li ratang ha u le tseleng.

Ho boloka litšenyehelo

E 'ngoe ea melemo ea ho sebelisa Audio Video Standard (AVS) ke bokhoni ba ho boloka litšenyehelo, kaha e fana ka mokhoa o sebetsang oa ho hlahisa le ho aba mecha ea phatlalatso ea digital. AVS e rarolla ho se lumellane pakeng tsa theknoloji ea compression ea video le molumo, e thibelang merero e amanang le video hore e se ke ea hlalosoa ka lisebelisoa tse shebaneng le molumo kapa ka tsela e fapaneng. Ka lebaka leo, ho sebelisa AVS ho felisa tlhoko ea bafani ba litaba ho etsa lifaele tsa mofuta o mong le o mong oa sesebelisoa se shebiloeng.

Ka AVS, fomete e le 'ngoe e hatelitsoeng ea faele e ka etsoa le ho sebelisoa libakeng tse ngata tse shebiloeng ka liphetoho tse nyane kapa li sa hloke letho. Sena se fokotsa litšenyehelo tsa ho ngolisa kaha ha ho hlokahale hore ho be le mefuta e mengata ea tokomane e tšoanang ho pholletsa le liforomo tse fapaneng. Faele ena e le 'ngoe e ka boela ea khutlisetsoa mefuteng e sa tšoaneng ea mecha ea litaba ho kenyeletsa ho phallela mecha ea litaba, tlhahiso ea li-DVD tse sebetsanang, joalo-joalo, ho fokotsa litšenyehelo tse amanang le liphetoho tse eketsehileng.

Ho feta moo, ha litaba tse ajoang ka theknoloji ea ho phallela li fetoloa 'me qetellong li jarolleloa ho lisebelisoa tsa basebelisi tse kang mehala ea cellular kapa li-PC, AVS e ntlafala ho feta mekhoa e tloaelehileng ea likhoutu ka ho fana ka boleng bo holimo ba setšoantšo ka litheko tse tlase ha e ntse e fihlela sekhahla se betere sa compression ha se bapisoa le MPEG- 2 theknoloji. Litefiso tse tlase li thusa ho potlakisa ho tsamaisa thepa 'me li molemo ha u aba litaba ho marang-rang a itseng joalo ka lits'ebeletso tse thehiloeng ho sathelaete tse nang le mefokolo e matla ea bandwidth ka lebaka la theko e phahameng ea ho theola lihokelo.

sebeletsana

E 'ngoe ea melemo ea mantlha ea AVS ke bokhoni ba ho netefatsa tšebelisano lipakeng tsa lisebelisoa tse fapaneng, e lumellang hore lifaele tsa boleng bo holimo tsa video le audio tse hlahisoang li bapaloe hoo e batlang e le sesebelisoa sefe kapa sefe. Boemo bona bo phahameng ba ho lumellana bo etsa hore AVS e be khetho e ntle haholo bakeng sa tlhahiso ea li-audio le livideo tsa setsebi, hammoho le tšebeliso ea lapeng.

AVS e boetse e netefatsa ho bapala ka mokhoa o se nang moeli ho lisebelisoa tse ngata tse nang le khouto e potlakileng ea bitrate e lumellang mefuta e fapaneng ea lisebelisoa kapa boholo ba lisebelisoa ho sebelisa lifaele tse nang le qeto e phahameng ntle le tahlehelo ea boleng. Litšoantšo le melumo ea boleng bo holimo e hlahisoang ke mefuta e joalo e boetse e hanyetsana le malware kapa livaerase tse atisang ho tsamaisana le litaba tse tsoang mehloling e meng. AVS e kenyelletsa li-encryption tse matla tse netefatsang hore litaba life kapa life tse entsoeng li tla lula li bolokehile, li thibela bosholu kapa litlhaselo tse ling tse ka amang data ea mosebelisi.

Sebelisa Cases bakeng sa AVS

Audio Video Standard (AVS) ke protocol ea phetisetso ea media ea dijithale e ntlafalitsoeng ke mokhatlo oa China. E sebelisoa haholo bakeng sa ho romella melaetsa ea audio le ea video ka marang-rang mme e sebelisoa haholo lithelevisheneng tsa dijithale le tse ling. Li-audiovisual thepa. Karolong ena, re tla sheba maemo a fapaneng a ts'ebeliso ea maemo a video a audio, hammoho le melemo le likotsi tsa ona.

Ho phatlalatsoa

Sistimi ea likhoutu tsa video ea AVS e na le lits'ebetso tse ngata khasong, haholo bakeng sa phetiso ea TV ea sathelaete ea dijithale, TV ea cable le khaso ea lefatše. E sebelisoa hangata joalo ka maemo a kamehla a likhoutu tsa video bakeng sa lits'ebeletso tsa sathelaete tse otlolohileng (DBS). E boetse e tumme bakeng sa khaso ea video ea dijithale (DVB) le lits'ebetso tsa thelevishene tsa cable, hammoho le lits'ebeletso tse phahameng tsa litlhaloso tsa digital (HDDSL). Tekanyetso ea AVS e sebelisoa ho hatella litaba tsa audio le video pele li fetisoa, ho li lumella ho romelloa habonolo ka marang-rang a lekanyelitsoeng a bandwidth joalo ka liteishene tsa puisano tsa sathelaete kapa cable TV.

Lenaneo la AVS le lumella baphatlalatsi ho fetisa boitsebiso bo bongata sebakeng se lekanang ha se bapisoa le litekanyetso tse ling tse kang MPEG-2 kapa Multimedia Home Platform (MPEG-4). E boetse e fana ka melemo e meng joalo ka ho rarahana ha khouto e fokotsehileng, ts'ebetso e ntlafalitsoeng ea compression le scalability ka bokhoni bo fapaneng ba sekhahla. Sena se etsa hore e be khetho e nepahetseng bakeng sa lits'ebetso tsa seea-le-moea le seea-le-moea-pono tse hlokang ho tsamaisoa ha data hantle ha li ntse li fana ka boiphihlelo ba boleng bo holimo ba ho shebella lisebelisoa tsa basebelisi ba ho qetela.

Phallela

Lisebelisoa tsa ho phallela li ka u tsoela molemo ho tsoa ho AVS ho netefatsa ho fana ka litaba tsa audio le tsa video ka mokhoa o tsitsitseng, ka boiphihlelo ba boleng bo holimo bo ka khonehang. AVS e thusa bafani ba litaba ho hasanya mananeo a seea-le-moea-moea-moea-le-moea-moea ka nako ea sebele ka marang-rang ka liphetoho tse thellang pakeng tsa melapo, ho tšehetsa mefuta e mengata ea ho phallela ka nako e le 'ngoe.

AVS e sebelisoa bakeng sa ho phallela liforomo tsa molumo le video tse kang MP3, FLAC, AAC, OGG, H.264/AAC AVC, MPEG-1/2/4/HEVC le tšehetso e meng e hlokahalang bakeng sa ho fana ka mefuta e mengata ea lipuo tse ngata le tse ngata. -fomete lits'ebeletso tsa mecha ea litaba inthaneteng ka har'a li-skrini tse fapaneng.

AVS e ka sebelisoa ho theha boiphihlelo bo ntlafalitsoeng ba ho phallela ka litokiso tsa boleng ba video tse ikhethileng ho lisebelisoa tse fapaneng. E ts'ehetsa phetisetso ea faele ea marang-rang ka ho sebelisa liprothokholo tsa HTTP Live Streaming (HLS) kapa Dynamic Adaptive Streaming (DASH) le phetiso ea phatlalatso e sebelisang protocol ea MPEG Transport Stream (MPEG TS). Ts'ehetso ea mahlale a DRM joalo ka PlayReady, Widevine kapa Marlin e kenyellelitsoe.

Ho feta moo, AVS e fana ka likarolo tse kang ts'ehetso bakeng sa phetoho e se nang moeli pakeng tsa li-bitrate tse feto-fetohang le liqeto; nako ea ho qala ka potlako; matla a ntlafatso a ho hlaphoheloa liphoso; ho ntlafatsa sekhahla sa khokahanyo; ho tsamaellana le maemo a mangata a ikamahanyang le maemo a indasteri ea ho phallela joalo ka HEVC kapa lifaele tse kentsoeng tsa VP9; tšehetso bakeng sa khaso e phelang ho marang-rang a IPTV; lumellana le SDI ho tšoara likarete; tšehetso bakeng sa multicasting ho kenyeletsa le IPv6 bokhoni; metadata ea nako e tsamaellanang le tlhaiso-leseling ea kopanyo ea maemo a ID3 linthong tsa molumo.

Video Conferencing

Kopano ea video ke e 'ngoe ea linyeoe tsa mantlha tsa tšebeliso ea AVS. Audio le video li ka fetisoa lipakeng tsa libaka tse hole tse nang le boleng bo haufi ba HD. AVS e khona ho etsa sena ka lebaka la likhoutu tsa eona tsa ho lokisa liphoso tse hahelletsoeng kahare, tse thusang ho netefatsa hore ke molumo le video tsa boleng bo holimo feela tse fihlang ho moamoheli. Ke ka lebaka lena AVS e fetohileng mokhoa oa ho buisana ka video liindastering tse ngata kajeno.

AVS e boetse e na le molemo ha ho tluoa tabeng ea scalability, kaha e lumella batho ba fetang ba babeli ho kena mohala hang-hang ntle le ho senya boleng ba molumo kapa video. Ho ata ha AVS ho etsa hore ho khonehe ho hokahanya li-call lipakeng tsa lisebelisoa tse 'maloa,' me ho netefatsa hore morupeluoa e mong le e mong o fumana boiphihlelo bo kang ba HD ntle le litšitiso kapa litšitiso tse sa fetoheng.

AVS e boetse e ts'ehetsa protocol ea encryption e hahelletsoeng ka har'a eona e patalang linako tsohle ho sebelisa liprothokholo tsa marang-rang tse sireletsehileng (SSL). Sena se bolela hore lintlha tsohle tse arolelanoang lipakeng tsa bankakarolo li lula e le lekunutu 'me li ke ke tsa fumanoa ke mang kapa mang ntle le ba memetsoeng ho kenela mehala. Karolo ena e ekelitsoeng ea ts'ireletso e etsa hore AVS e be khetho e nepahetseng bakeng sa lihlopha tse hlokang ho fetisa tlhahisoleseling ea bohlokoa nakong ea linako tsa tsona.

Litekanyetso tsa AVS

Audio Video Standard (AVS) ke tekanyetso ea khouto ea audio-visual e sebelisoang phetisong ea molumo oa dijithale le livideo. E ntlafalitsoe le ho etsoa ka mokhoa o tloaelehileng ke Sehlopha sa Ts'ebetso sa Audio Video Coding Standard ea Chaena 'me e ile ea lokolloa ka lekhetlo la pele ka 2006. Litekanyetso tsa AVS li thusa ho fana ka tšebelisano pakeng tsa litekanyetso tsa khouto ea video le ho etsa li-decoding, hammoho le boleng bo ntlafetseng ba video, ts'ireletso le ts'ebeliso ea marang-rang. Karolo ena e tla tšohla litekanyetso tsa AVS ka botlalo le maemo ao e sebelisoang ho ona.

AVS-P

AVS-P (Audio Video Standard Preservation) ke e 'ngoe ea mefuta ea morao-rao ea maemo a AVS e ntlafalitsoeng ho thusa ho boloka nako e telele ea litšoantšo tse tsamaeang, ho kenyeletsoa thelevishene le filimi. Tekanyetso ena e reretsoe ho fa baphatlalatsi le mekhatlo e meng mokhoa o fumanehang habonolo, o bolokehileng bakeng sa ho tsamaisa litaba tsa audio/video.

Litlhaloso tsa tekheniki tsa AVS-P li ipapisitse le maemo a Mokhatlo oa Machaba oa Boemo ba Boemo (ISO) MPEG-2. E fana ka litšobotsi tse ntlafetseng tse kang boleng bo phahameng ba setšoantšo ka lebaka la ho eketseha ha li-bitrates, ho kopanngoa le litekanyetso tse teng tsa khaso tse nolofalletsang tšebeliso ea mekhoa ea mekhoa ea setso le ea digital, mekhoa e ntlafetseng ea compression e fokotsang li-bitrates ntle le tahlehelo e bonahalang ea boleng ba video kapa molumo, hape e nolofalletsa ho fihlella. ho mefuta e mengata ea mananeo. Likarolo tsena kaofela li etsa hore AVS-P e be khetho e ntle ha ho tluoa tabeng ea ho fana ka litharollo tse ntle tsa nako e telele tsa polokelo bakeng sa litaba tsa molumo / tse bonoang.

Theknoloji ea AVS-P e tiisa phetisetso ea video ea boleng bo holimo maetong a malelele 'me e ka sebelisoa maemong a mangata a khaso moo ho khopamisoa ha matšoao e leng bothata kapa moo basebelisi ba hlokang mokhoa o sireletsehileng oa ho boloka litaba tsa bona. Mokhoa oa AVS-P o sebelisa li-codec tse peli - video codec H.264 / MPEG 4 Karolo ea 10 Advanced Video Coding (AVC), e atisang ho bitsoa HVC, e tšehetsang HD le 4K resolution; le audio codec ea Dolby AC3 Plus (EAC3) e tšehetsang likanale tse fihlang ho tse 8. Motsoako oa li-codec tsena tse peli o fa AVS-P melemo e mengata ho feta litsamaiso tsa analog tsa lefa ha ho tluoa tabeng ea ho boloka litaba tsa audio le tse bonoang ka nako e telele.

AVS-M

AVS-M (Audio Video Standard—Multimedia) ke tekanyetso e thehiloeng ke AVS Working Group ea China ea National Video and Audio Coding Standard Coordination Group. Tekanyetso ena e fana ka sethala se felletseng sa nts'etsopele le phano ea multimedia, ho kenyelletsa le litšoantšo, litšoantšo tsa 3D, animation le molumo.

AVS-M e tsepamisitse maikutlo lits'ebetsong tse kang khaso ea thelevishene ea dijithale le litsamaiso tsa puisano ho thusa tlhahiso ea litaba tsa boleng bo holimo tse fihlelang litlhoko tsa bareki ha ho ntse ho fokotsa litšenyehelo. E kenyelletsa liprothokholo tsa phetisetso, litlhoko tsa likhoutu tsa data, melaoana ea moralo oa meralo ea sistimi le tse ling.

Likarolo tsa bohlokoa tsa maemo a AVS-M li kenyelletsa:
- Khoutu ea video ea li-multimedia e tsitsitseng e tšehetsang litefiso tsa video ho tloha ho 2kbps–20Mbps
- E lumellana haholo le litekanyetso tse ling tse kang H264/AVC le MPEG4 Karolo ea 10/2 bakeng sa ts'ebetso e ntle (ho sebelisana hantle)
- Ts'ehetso ea khouto bakeng sa lifomate tse 'ne tse arohaneng tsa media: molumo, mongolo, litšoantšo le animation
- Tšehetso ea litšoantšo tsa 3D
- Likarolo tse hlahang skrineng (OSD) ho thusa basebelisi ho fetola litlhophiso ka kotloloho ho tsoa skrineng sa bona sa lisebelisoa
- Karolo ea encoding ea JPEG2000 e tšehetsang litšoantšo tse phahameng
E sebelisoa haholo lits'ebetsong tsa khaso ea dijithale Chaena ha e ntse e sebelisoa le mebarakeng e meng ea lefats'e joalo ka Japane le Europe. Ho feta moo, e amohetsoe ke litsamaiso tse ling tsa marang-rang tsa China ho kenyeletsoa CCTV.

AVS-C

AVS-C ke Audio Video Standard, kapa AVS, e hlahisitsoeng ke Audio le Video Coding Standard Working Group (AVS WG) ea China Video Industry Association (CVIA). AVS-C e ipapisitse le H.264/MPEG-4 AVC, 'me e etselitsoe ho nolofalletsa ho hasa livideo tsa dijithale tsa China ka boleng bo holimo ba pono ha e ntse e kopana le maemo a lefats'e.

AVS-C e fa baetsi ba lifilimi melemo e mengata ho feta litekanyetso tsa khouto tsa video tsa MPEG tse kang MPEG-2 le MPEG-4. E nolofalletsa lits'ebeletso tse ngata tsa video hore li fetisoe ka har'a bandwidth e le 'ngoe, e lumellang tšebeliso e ntle ea liteishene tsa phatlalatso. 'Me hobane e sebelisa li-algorithms tse phahameng tsa khatello ho fokotsa tlhoko ea sekhahla sa "bit rate" ho feta theknoloji ea HDTV joalo ka blu-ray, e boetse e thusa haholo ho fokotsa litšenyehelo ho tsoa ho bahlahisi.

AVS-C e ts'ehetsa likarolo tse ngata tse sa fumaneheng maemong a mang ho kenyelletsa le maqhubu a phahameng a maqhubu a fihlang ho 10MHz a etsang hore e loketse lits'ebetso tsa HD; mokhoa o tlase oa latency; lebelo la foreimi ho fihlela ho liforeimi tse 120 motsotsoana; mefuta e tsoetseng pele ea mebala; lifomate tsa likhoutu tsa molumo joalo ka AAC, MP3 le PCM; ts'ehetso e fapaneng ea bitrate bakeng sa ho fana ka mokhoa o bonolo oa ho phalla ho sa tsotellehe maemo a marang-rang; Ntlafatso ea ts'ebetso e ntlafalitsoeng ka ho ntlafatsa lintlha tsa motsamao le litšobotsi tsa setšoantšo; mekhoa e tlase ea latency ea likhoutu tsa video; khalemelo ea liphoso e tsoetseng pele; liteko tsa boleng ba setšoantšo ho sebelisoa liforeimi tsa litšupiso le tlhahlobo ea 'nete ea liroboto.

Linyeoe tsa tšebeliso ea AVS-C li fapane kaha li ka sebelisoa maemong a mangata ho kenyelletsa phatlalatso ea dijithale, marang-rang a marang-rang a phatlalatso ea litaba tsa litaba, lits'ebeletso tsa TVOnline lits'ebeletso tsa mehala, mananeo a likopo tsa thuto mabapi le tlhoko (POD), lits'ebeletso tse sebetsanang tsa IPTV, lits'ebetso tsa Cable TV le. ba bang.

fihlela qeto e

Tekanyetso ea AVS ke ea bohlokoa bakeng sa litsebi tsa mamelwang le tsa video ho li hopola ha li khetha mokhoa o motle oa ho hapa le ho hasanya litaba tsa bona. Ha botumo ba eona bo ntse bo eketseha, ho tseba nako le mokhoa oa ho sebelisa tekanyetso ena ho bohlokoa ho moreki ofe kapa ofe, khoebo, kapa mofani oa litšebeletso ea batlang ho fumana molemo ka ho fetisisa phihlelong ea bona ea mecha ea litaba. Sehloohong sena, re hlahlobile melemo le mathata a AVS, hammoho le linyeoe tsa tšebeliso ea eona. Qeto e hlakile—AVS ke tekanyetso ea bohlokoa le e matla e ka sebelisoang ka katleho e kholo.

Kakaretso ea AVS

AVS e emetse Audio Video Standard mme ke video codec e entsoeng Chaena ke Audio Video Coding Standard Workgroup. Tekanyetso ena e ntlafalitsoe ka menehelo e mengata e tsoang liunivesithing tse ngata tsa thuto ea China, litsi tsa lipatlisiso le lik'hamphani tsa China tsa li-video. E ile ea thakholoa ka Phato 2005, 'me ho tloha ka nako eo e etselitsoe ho lumellana le mokhoa o phahameng oa tlhaloso ea thelevishene ea thelevishene ea China.

AVS e kopanya mahlale a tsoetseng pele joalo ka Multi-Picture Frame Resource Partitioning (MFRP), Advanced Intra Coding (AIC), Advanced Inter Prediction (AIP), Adaptive Loop Filter (ALF), Deblocking Filter (DF) le 10 bit 4:2:2 colorspace bakeng sa ho fana ka bokhoni bo felletseng ba khouto bo lebisitsoeng ho fihlela litlhoko tse haufi tsa marang-rang a phano ea litaba tsa HDTV. E boetse e fana ka bokhoni bo ntlafalitsoeng ba taolo ea sekhahla joalo ka ts'ebetso ea ho khopamisa, kabo ea maemo a feto-fetohang, mokhoa oa ho etsa liqeto tse thehiloeng maemong a macroblock, har'a tse ling.

Ntle le ho sebelisoa litšebeletso tsa HBBTV ka hare ho Chaena, AVS e ka boela ea fana ka boleng ba setšoantšo bo phahameng ho feta litekanyetso tse ling tsa machaba ha li bapisoa le lisebelisoa tse tsitsitseng tsa bitrate encoding tse sebelisoang haholo libakeng tsa khaso lefatšeng ka bophara kajeno. E fana ka ts'ebetso e betere ha e sebetsana le lits'oants'o tse rarahaneng tsa metsamao mme e fella ka ts'ebetso e ntlafalitsoeng haholo ea compression ha e kopantsoe le lisebelisoa tsohle tse matla tsa ho khouta ho kenyelletsa mekhoa e mecha ea ho bolela esale pele le mekhoa ea ho fetola.

Ka hona, AVS ke mokhoa o nepahetseng oa ho kenyelletsa litaba tsa multimedia ho HD liqeto tse kang 720p kapa 1080i / 1080p ha u ntse u boloka litlhoko tsa bandwidth li lekanyelitsoe ka ho finyella litekanyetso tse ntle tsa compression ntle le ho senya boleng ba pono kapa litekanyetso tse ling tsa molumo joaloka Dolby Digital Plus kapa AAC/HE-AACv1/ v2 liforomo tsa encode tsa molumo.

Melemo ea AVS

Ho sebelisa AVS ho fana ka melemo e mengata e etsang hore e ipiletse bakeng sa lits'ebetso tse fapaneng. Pele ho tsohle, likarolo tsa AVS khatello e hlokang tahlehelo, ho bolelang hore boleng ba video / audio ea pele bo bolokiloe nakong eohle ea tlhahiso. Sena se etsa hore e be se loketseng bakeng sa ho theha video / audio ea boemo bo holimo ho latela seo u ka lebellang ho se bona liholong tsa lifilimi kapa thelevisheneng e phatlalatsoang. Ho feta moo, AVS e boetse e fana ka linako tse sebetsang hantle tsa khouto le decoding, hammoho le phallo e tlase ea latency e netefatsang puisano e potlakileng lipakeng tsa lisebelisoa tse peli. Ho feta moo, ka lebaka la sebopeho sa eona se seng sa thepa, AVS e ka sebelisoa le lihlahisoa tse tsoang palo efe kapa efe ea bahlahisi — ka hona, tšebelisano e ke ke ea ba bothata. Qetellong, kaha AVS e ipapisitse le maemo a H.264 (e tšoanang le li-disc tsa Blu-Ray), mosebelisi leha e le ofe a ka kholiseha hore tlhahiso ea hae e tla lula e le teng ka lilemo tse tlang.

Lumela, ke 'na Kim,' mè le motho ea chesehelang ho emisa ho sisinyeha ea nang le tsebo ea ho theha mecha ea litaba le nts'etsopele ea webo. Ke na le tjantjello e kholo ea ho taka le ho etsa lipopae, 'me joale ke qoela ka pele lefatšeng la li-stop-motion. Ka blog ea ka, ke arolelana lithuto tsa ka le uena.