Key Difference – OTT vs VOD
OTT stands for Over the Top where VOD stands for Video on Demand. Qhov sib txawv tseem ceeb ntawm OTT thiab VOD yog tias OTT tuaj yeem cuam tshuam nrog cov khoom lossis cov kev pabcuam uas tau muab hauv internet thaum VOD tsuas yog cuam tshuam nrog cov yeeb yaj kiab thiab kev nthuav qhia.
OTT yog dab tsi (Tshaj Tawm)?
OTT yog daim ntawv thov lossis kev pabcuam uas tuaj yeem muab cov khoom lag luam hauv internet. Txoj kev no bypasses ib txwm txoj kev faib. Tshaj li cov kev pabcuam saum toj kawg nkaus feem ntau cuam tshuam nrog kev tshaj tawm thiab kev sib txuas lus thiab raug nqi qis dua thaum piv rau cov qauv xa khoom.
Ntawm cov ntawv thov saum toj kawg nkaus tuaj yeem yog txhua yam uas cuam tshuam rau cov qauv xa khoom xa tuaj. Hulu thiab Netflix uas hloov cov chaw muab kev pabcuam TV niaj hnub thiab Skype uas hloov cov chaw sib txuas lus ntev yog cov piv txwv ntawm OTT.
Raws li cov ntawv thov saum toj kawg nkaus tau hloov txoj kev xa khoom ib txwm muaj, cov tuam txhab zoo sib xws lossis sib tshooj tau sib cav. Ib txwm ISP thiab cov tuam txhab telco tau sib tw los ntawm cov ntawv thov sab saum toj los ntawm cov tuam txhab thib peb. Netflix thiab cov tuam txhab cable muaj kev tsis sib haum xeeb vim ob qhov kev pabcuam cuam tshuam nrog ib leeg. Cov tuam txhab cable tau them nyiaj rau kev nkag mus rau hauv internet, tab sis cov neeg siv khoom xaiv tsis siv cov pob cable. Hloov chaw, lawv nyiam siv video streaming hauv internet. Txawm hais tias cov tuam txhab cable tau mob siab los ua kom nrawm nrawm hauv Is Taws Nem, kev tsis sib haum xeeb los ntawm cov neeg sib tw zoo li Netflix yuav tsis txhawb cov xwm txheej zoo li nws yuav hla cov kev faib tawm ib txwm muaj.
Nkauj sab saum toj yog nto moo hauv ntiaj teb kev lom zem. Qhov no yog vim muaj peev xwm ntawm OTT ua ke nrog lub ntiaj teb TV thiab digital video. Nyob rau sab saum toj yog muaj peev xwm xa cov yeeb yaj kiab thiab TV cov ntsiab lus nrog kev pab ntawm internet. Tus neeg siv tsis tas yuav sau npe rau ib txwm siv cables, satellites, thiab TV kev pabcuam txhawm rau saib cov ntsiab lus. Cov chaw muab kev pabcuam cable muab kev sib txuas hauv internet uas xav tau rau OTT apps thiab cov kev pabcuam ua haujlwm. Vim qhov tseeb no, cov tuam txhab cable yuav tsum tau ua qhov tseem ceeb thaum nws los txog rau kev loj hlob ntawm OTT cov kev pabcuam. OTT tsis tuaj yeem txhim kho sai sai vim tias kev sib tw thev naus laus zis ntawm kev xa cov ntsiab lus hauv lub vev xaib ntawm kev kub ceev yog qhov teeb meem. Tab sis qhov xwm txheej no zoo li ploj mus vim kev siv internet nrawm zuj zus.
OTT yog qhov kev pabcuam muaj nqis ntxiv, thiab peb feem ntau siv cov kev pabcuam no txawm tias tsis paub txog. Hauv cov ntsiab lus yooj yim, qhov kev pabcuam no yog siv los ntawm kev pabcuam network pabcuam raws li xa los ntawm lub npe saum toj kawg nkaus. Cov kev pabcuam network uas siv tsis tuaj yeem tswj tau, tsis muaj cai lossis lub luag haujlwm lossis thov rau cov kev pabcuam uas tau muab rau nws. Qhov no yog vim tus neeg siv tuaj yeem siv internet raws li nyiam.
VOD yog dab tsi (Video on Demand)?
VOD, paub zoo dua li video ntawm kev thov, tso cai rau cov neeg siv saib lawv cov ntsiab lus video nyiam hauv lawv lub TV lossis khoos phis tawj. Lawv tuaj yeem xaiv cov ntsiab lus video uas lawv xav saib. Internet raws tu qauv TV muab yees duab ntawm kev thov raws li ib tug dynamic feature. Tus neeg siv tau muab cov ntawv qhia zaub mov ntawm cov yeeb yaj duab uas muaj los xaiv. Cov vis dis aus uas tau xaiv yog kis los ntawm cov txheej txheem streaming raws sijhawm. VOD yuav muab cov neeg saib tam sim ntawd nkag mus rau cov yeeb yaj kiab uas lawv xav saib. Cov kev pabcuam uas tuaj yeem muab los ntawm VOD suav nrog kev ua kis las, kev lom zem, kev kawm, thiab cov yeeb yaj kiab tshwj xeeb. Thaum TV siv cov tshuab tshaj tawm ib txwm siv, VOD siv unicast kis tau tus mob. VOD feem ntau yog siv hauv kev sib tham video. Txawm hais tias VOD yog lwm txoj hauv kev nrov rau TV, nws tsis tau siv dav vim muaj kev txwv hauv bandwidth hauv cov tes hauj lwm niaj hnub no. VOD siv cov cuab yeej sib tham sib tham hauv TV uas tus neeg saib tuaj yeem saib qhov program hauv lub sijhawm lossis rub tawm tib yam los saib tom qab. Cov tshuab VOD feem ntau muaj lub tshuab txais TV, teeb tsa saum toj kawg nkaus, ntawm cov neeg siv khoom kawg. Cov kev pabcuam tseem tuaj yeem xa mus rau khoos phis tawj, xov tooj ntawm tes high-end, thiab cov khoom siv digital tshaj tawm.
Raws li tau hais ua ntej, vim tsis muaj bandwidth, VOD tsis tuaj yeem nthuav dav raws li qhov xav tau. Qhov tsis muaj bandwidth tau ua rau muaj kev tsis sib haum xeeb thiab lub sijhawm rub tawm ntev uas yuav ua rau cov neeg saib tsis yooj yim. VOD kuj tseem tuaj yeem ua haujlwm tau zoo nyob rau thaj tsam dav dav thaum nws tau txais kev pabcuam los ntawm satellite-based network. Tab sis thaum ntau tus neeg thov ntau yam kev pab cuam tsis tu ncua, nws yuav dhau mus rau lub network uas muab kev pabcuam.
Ib txoj hauv kev uas qhov teeb meem no tuaj yeem kho tau yog khaws cov kev pab cuam ntawm servers kom ua raws li qhov kev thov ntawm cov neeg siv khoom. Lub tshuab no hu ua "khoom thiab xa mus". Qhov no yuav ua rau kom muaj cov kev pab cuam thiab kev ntseeg siab ntawm nws ib yam nkaus thaum piv nrog ib qho chaw cia khoom loj heev. Cov kab ke no tseem yuav pab teeb tsa tus qauv them nqi ntawm nws tus kheej.
VOD tau nyob ib puag ncig txij li xyoo 1990's. VOD yog muab los ntawm ntau tus neeg muab kev pabcuam ua qhov kev pabcuam thib peb. VODs kuj tseem siv los txhim kho kev sib tham video thiab kev nthuav qhia hauv tsev kawm ntawv. Cov tsev so siab kawg kuj ua raws li qhov tshwj xeeb no.
Qhov txawv ntawm OTT thiab VOD yog dab tsi?
Service:
OTT: OTT tuaj yeem cuam tshuam nrog cov khoom lossis kev pabcuam
VOD: VOD tsuas yog cuam tshuam rau cov yeeb yaj kiab thiab nthuav qhia
Nkauj hmoob channel:
OTT: Muaj ntau cov channel tuaj yeem pom.
VOD: Tus neeg siv tsuas tuaj yeem saib cov yeeb yaj kiab uas tau xaiv thiab qhov kev pabcuam no yog qhov zoo tshaj plaws.
Speed:
OTT: OTT nrawm dua VOD
VOD: Raws li tus neeg siv raug yuam kom rub tawm cov ntaub ntawv, video zoo yuav poob thiab cov vis dis aus yuav siv sijhawm ntev.
Platform:
OTT: OTT muab kev tshaj tawm video thiab yees duab ntawm kev thov.
VOD: VOD nyiam tus tshaj tawm xov xwm, ntawm qhov xav tau video portals, thiab cov lag luam cuam tshuam.
Kev ruaj ntseg:
OTT: OTT muaj peev xwm xa cov ntsiab lus video hla cov xov tooj ntse thiab cov khoom siv sib txuas.
VOD: VOD muaj kev nyab xeeb hauv internet thiab tuaj yeem txhawb nqa los ntawm ntau yam khoom siv.
Quality:
OTT: OTT muaj kev tshaj lij hauv kev tswj hwm, khwv nyiaj thiab faib cov ntsiab lus video.
VOD: VOD muab kev paub txog kev ua yeeb yaj kiab tsis muaj kev cuam tshuam.
