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Ki pwotokòl HLS la:
HLS (Http Live Streaming) se yon pwotokòl pou difizyon an tan reyèl ki defini nan Apple. HLS aplike ki baze sou pwotokòl HTTP la. Kontni transmisyon an gen ladan de pati, youn se dosye deskripsyon M3U8, ak lòt la se dosye medya TS la.
HLS pwotokòl aplikasyon:
Depi pwotokòl kouch kouch la sèlman mande pou pwotokòl HTTP estanda a, HLS ka fasilman pase nan firewall oswa serveurs proxy, epi li ka fasilman itilize CDN pou akselere distribisyon, sa ki ka fasilman rezoud blokaj gwo aplikasyon yo. Ak kliyan an se fasil aplike.
HLS se kounye a lajman ki itilize nan jaden an sou-demann ak emisyon ap viv la. Pwotokòl la HLS transmèt odyo ak videyo kouran nan pwotokòl la HTTP reyalize videyo ap viv la. Reyalizasyon pwotokòl HLS la se kle a. An patikilye, aktyèl pwotokòl yo emisyon ap viv nan telefòn mobil nan jaden an difizyon ap viv fondamantalman itilize HLS pwotokòl Apple la. Li ka di ke Aparisyon nan akò sa a te rezoud pwoblèm nan nan emisyon ap viv sou tèminal mobil lan.
Zouti / Materyèl
Sèvè medya 800li
Metòd / Etap
HLS pwotokòl achitekti dyagram:
Kouman jenere dosye M3U8 nan pwotokòl HLS
M3U8 jenerasyon dosye ak analiz:
Kontni prensipal la nan pwotokòl la HLS se sou pwotokòl la tèks M3U8. An reyalite, jenerasyon an ak analiz yo trè senp. Sa ki anba la yo se egzanp aplikasyon pratik:
Playlist Media (Playlist Media)
Kouman jenere dosye M3U8 nan pwotokòl HLS
· HLS reprezante yon kouran medya atravè yon Playlist pwente pa URI (RFC3986).
· Yon Playlist kapab yon Playlist Media oswa Playlist Mèt, lè l sèvi avèk yon UTF-8 kode dosye tèks, ki gen kèk URIs ak Tags deskriptif.
· Yon Playlist Media gen yon lis nan segman Media. Lè yo jwe sekans, tout kouran konplè a ka jwe.
· Pou jwe Playlist sa a, kliyan an bezwen download li an premye, ak Lè sa a, jwe chak segman Media nan li.
· Yon sitiyasyon pi konplike se ke Playlist se yon Playlist Mèt ki gen yon koleksyon Variant Stream. Anjeneral, chak Variant Stream gen plizyè vèsyon diferan nan menm kouran an (tankou rezolisyon diferan ak pousantaj ti jan diferan).
Segman HLS Media
· Chak segman Media espesifye pa yon URI epi yo ka gen ladan yon seri byte.
· Se dire a nan chak segman Media espesifye nan tag EXTINF.
· Chak segman medya gen yon antye inik nimewo segman medya.
· Gen kèk fòma medya ki mande pou yon sekans fòma-espesifik inisyalize yon analizeur, anvan yo segman an meds analize. Jaden sa a rele Seksyon Inisyalizasyon Medya, ki espesifye pa tag EXT-X-MAP.
Pwoblèm reta HLS
HLS teyorik reta = 1 dire tranch + 0-1 td (td se EXT-X-TARGETDURATION, ki ka tou senpleman konprann kòm tan entèval pou jwè a chache tranch) + 0-n demaraj tranch (rekòmandasyon ofisyèl Apple la se yon demann (Jwe kòmanse apre 3 klip) + reta rezo a nan klip la mande pa jwè a (koneksyon rezo tan konsome) .. Yo nan lòd yo pouswiv yon efè ki ba-latansi, tranch yo ka koupe pi piti, ak entèval ki genyen ant chache tranch kapab dwe fè pi piti, ak jwè a ap kòmanse jwe anvan twa tranch yo chache.Men, metòd optimize sa yo ap ogmante risk pou enstabilite HLS ak erè.
Sèjousi, anpil medya difizyon ap viv manifaktirè sistèm difizyon yo te itilize pwotokòl la HLS yo rezoud pwoblèm nan lèktur nan telefòn android ak Apple telefòn. Otomatikman jenere adrès la lèktur M3U8 nan videyo a ap viv efikas, ki se dosye a M3U8 nan pwotokòl la HLS pou lèk jwe sou twazyèm-pati jwè ki sipòte M3U8, tankou VLC jwè oswa konbine avèk HTML5 teknoloji entènèt yo gade nan navigatè a mobil paj entènèt Live videyo.
Kouman jenere dosye M3U8 nan pwotokòl HLS
Echantiyon kòd la lèktur se jan sa a:
Kòd HTML entegre nan yon paj entènèt
<script type="text/javascript" src="http://192.168.1.44:8083/assets/player.js"></script>
p2ps_embed("hls", "live", "http://192.168.1.44:8083/videos/live/22/39/tUabV17nAPCev"," p2ps_video "," 640 "," 480 "," 10.1.0 ","http://192.168.1.44:8083/assets/expressInstall.swf", {}, {allowFullScreen: vre, allowScriptAccess:" toujou "});
Nou bezwen Flash jwè 2 oswa pi wo a yo jwe.http://www.adobe.com/go/getflashplayer"><img src = "http://www.adobe.com/images/shared/download_buttons/get_flash_player. gif "alt =" Enstale dènye jwè Flash "/>
Moble M3U8 lyen
http://192.168.1.44:8083/videos/live/22/39/tUabV17nAPCev/tUabV17nAPCev.M3U8
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Antre nan imèl yo ka resevwa yon sipriz
es.fmuser.org
it.fmuser.org
fr.fmuser.org
de.fmuser.org
af.fmuser.org -> Afriken
sq.fmuser.org -> Albanyen
ar.fmuser.org -> Arab
hy.fmuser.org -> Armenian
az.fmuser.org -> Azerbaydjan
eu.fmuser.org -> Basque
be.fmuser.org -> Belarisyen
bg.fmuser.org -> Bulgarian
ca.fmuser.org -> Katalan
zh-CN.fmuser.org -> Chinwa (senplifye)
zh-TW.fmuser.org -> Chinwa (Tradisyonèl)
hr.fmuser.org -> Kwoasyen
cs.fmuser.org -> Czech
da.fmuser.org -> Danwa
nl.fmuser.org -> Olandè
et.fmuser.org -> Estonyen
tl.fmuser.org -> Filipino
fi.fmuser.org -> Finnish
fr.fmuser.org -> Franse
gl.fmuser.org -> Galisyen
ka.fmuser.org -> Georgian
de.fmuser.org -> Alman
el.fmuser.org -> Greek
ht.fmuser.org -> Kreyòl ayisyen
iw.fmuser.org -> ebre
hi.fmuser.org -> Hindi
hu.fmuser.org -> Hungarian
is.fmuser.org -> Icelandic
id.fmuser.org -> Endonezyen
ga.fmuser.org -> Ilandè
it.fmuser.org -> Italyen
ja.fmuser.org -> Japonè
ko.fmuser.org -> Koreyen
lv.fmuser.org -> Latvian
lt.fmuser.org -> Lithuanian
mk.fmuser.org -> Masedwan
ms.fmuser.org -> Malay
mt.fmuser.org -> Maltese
no.fmuser.org -> Norwegian
fa.fmuser.org -> Pèsik
pl.fmuser.org -> Polonè
pt.fmuser.org -> Pòtigè
ro.fmuser.org -> Romanian
ru.fmuser.org -> Ris
sr.fmuser.org -> Sèb
sk.fmuser.org -> Slovak
sl.fmuser.org -> Slovenian
es.fmuser.org -> Panyòl
sw.fmuser.org -> Swahili
sv.fmuser.org -> Syèd
th.fmuser.org -> Thai
tr.fmuser.org -> Tik
uk.fmuser.org -> Ikrenyen
ur.fmuser.org -> Oudou
vi.fmuser.org -> Vietnamese
cy.fmuser.org -> Welsh
yi.fmuser.org -> Yiddish
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