MPEG Ngā Utauta

Tahuri MPEG ki ngā momo whakatakotoranga me te hoki mai i ngā momo whakatakotoranga

Mō MPEG

Ko te MPEG (Moving Picture Experts Group) he whanau o nga whakatakotoranga whakaataata me te ororongo e whakamahia whanuitia ana mo te rokiroki ataata me te purei ano.

Ngā Whakamahinga Noa

Video distribution
Broadcast media
DVD video

MPEG Ngā Pātai Auau mō te Tahuritanga

He aha te pūranga vitio MPEG?

Ko MPEG he kāwai ataata e pupuri ana i tētahi, he maha rānei ngā rerenga ataata, ngā pūrere oro, me ngā whakarārangi kōwhiringa. He rerekē ngā kāwai e tautoko ana i ngā kōwae rerekē, nō reira e whakawhirinaki ana te ōritetanga ki te wrapper me te mea e noho ana i roto.

He aha te rerenga papatono MPEG, ā, he aha te take o te mea ko ahau?

He maha te hanga hei whakakōrerotia e ngā pūrere taumahi pūmau i te wā tūturu, kāore e taea te whakahōu i runga i tētahi rorohiko. Ko ngā pakipū oro me te ataata e whakawāteatia ana me ngā tohu wā kia tīmata ai te tākaro i tētahi tāruatanga-tūtū i tētahi wāhi i roto i te rerenga, me te kore pūtautau me te kore e whakawātea i te faila katoa. Ko te take o taua hoahoa ko te take o te MPEG ihirangi e tākaro ana i ngā pūrere tawhito, ā, ka whakawātea i ngā pūmanawa o nāianei. Ko te ataata MPEG-1, MPEG-2 rānei me te pūoro MP2, AC-3 rānei, i whakawāteatia ki tētahi rerenga i hangaia hei whakawaeheretia e ngā pūrere taumahi pūmau.

He aha te pūmanawa pāohotanga me te tuhituhi e whakahau ana ki MPEG?

Nā te mea i hangaia te mekameka katoa ki runga i a ia. Ko ngā pūnaha whakapāpāho, ngā utauta tuhi DVD me ngā pūnaha whakawhanake i whakapūtātia i te taha o tēnei āhua i te wā o tēnei wā, ā, kāore e whakapūtātia anō ngā pūrere me te wā o te ratonga whai hua e rua tekau tau. Ko ngā pūranga e puta mai ana i ēnei pūnaha ko te āhua o te pūnaha i hangaia hei tuku, ehara i te kōwhiringa i hangaia e tētahi tangata i tēnei wā. Ka whakakōrerotia ngā rerenga papatono MPEG e ia kaiwhakaari DVD, te kāwai-tūtū me te mekameka whakapāpāho i hangaia i te wā katoa, ā, ka whakaaetia e rātau ngā hapa iti.

He ōrite te āhua o MPEG ki ōna whakaroatanga atu?

He. Ko tēnei whakaroanga me te ingoa roa, poto rānei e kitea ana e koe i te taha o te whakaahua i tētahi āhua taketake, ā, ko tētahi mea e whakaako ana, e whakaako ana rānei i te rua. He hītori nga ingoa e rua: he tepe ingoa pūranga e waru ngā āhua mai i te wā DOS, he kaipāpāho e whakaingoa ana i tōna taupānga i te āhua o tōna pūranga, e rua rānei ngā papatono i whakaritea kētia. Ka whakaputa anō te tahuritanga i te hua ōrite, nō reira ka whakamahia te whakaroanga e tūmanako ana te pūmanawa i te taha o te taha.

He aha te take kāore e whakatangitangi te mātāwai i tētahi MPEG?

Ko ngā kaiwhaiwhai e whakarewa ana i ngā whakakōrero mō tētahi rārangi poto o ngā āhuahira, ā, kāore te MPEG i runga i te — te āhuahira, te momo codec e whakaaetia ana, e noho tonu ana tōna pakeke. Kāore te faila i te whakaroa, ā, ka whakatuwheratia e te kaiwhakaari papamuri, engari kāore he mea e mahi ana koe ki te pātaka ka whakawātea e te kaiwhaiwhai. Ko te tahuri ki tētahi tahuri tīpaetia-tīwae te huarahi anake e tautoko ana i te whakateretanga. E hiahiatia ana e MPEG-2 tata ki te whā ki te ono ngā wā o te mokatere bit o H.264 mō te whakaahua ōrite, ā, he rite tonu te whakawāteatanga o ōna ihirangi, e āhua ana he whakawātea i ngā whakaaturanga o nāianei.

He aha te take i whakaaturia ai e ahau MPEG ngā raina kākahu i runga i tētahi mea e neke ana?

Nā te mea kua whakawhāititia. Ko ngā ihirangi i tēnei pūāhua i te nuinga o te wā e puta mai ana i te wā o te whakataka me te DVD, i reira ka rokirokitia ia tākaro hei āpure haurua-tūtū e rua i tangohia he rima tekau o te tuarua. Ka whakaaturia e te whakaata ā-whakahaere i te wā kotahi, kia puta ai te nekehanga i waenganui i ngā whakaaturanga e rua hei whakawhāiti whakapae. Ka whakarerekētia te tahuritanga i runga i te tahuritanga i ngā āpure ki ngā tātuhi katoa, ā, ka ngaro te taonga mō te pai. Ko te tikanga o MPEG i tēnei he rerenga papatono MPEG-1, MPEG-2 rānei, ko te āhua i paerewa mō ngā CD Vitio, kātahi anō mō ngā DVD me ngā pouaka whakaata.

Ka whakapāpāho te MPEG ki runga i tētahi pūkoro, TV rānei me te kore e whakawātea i te pūkoro?

I te nuinga o te wā, ā, nā te mea ko ngā pūrere i roto i ngā tāuru, ngā tātari me ngā pouaka whakaata e whakawaehere ana i tēnei momo utu i roto i ngā pūrere kua whakaritea, kaua i te pūnaha matua. Ko te rerekētanga i waenganui i tētahi ataata e whakaata ana i te rua wā me tētahi e whakamārō ana i te pūrere, ā, ka whakawātea i roto i te whā tekau minu. I te wāhi e whakapeka ana te āhua, he tautoko papatono, ehara i te whakawaeheretanga — he pai te pūrere, ko te whāriki te mea e whakakāhore ana te papatono whare whakataki.

Me tiaki tonu ahau i ngā pūranga hōu hei MPEG?

Ahakoa rā, mēnā e hiahiatia ana e tētahi mea ki raro iho. Ka tuwhera tonu te āhua, ā, kāore he tūpatotanga mō te tahuri i tētahi pūranga kāore e take ana i ngā raruraru, engari kāore anō kia haere te utauta, te tōtika rānei. Mō tētahi mea hōu, kāore he utu tāpiri o te āhua o nāianei, ā, ka ārai i te porowhita o tēnei pātai i ētahi tau mai i tēnei wā.

He aha te whakarerekētanga o MPEG ki tētahi atu hanga ataata?

Ka tahuri MPEG ki MP4 ina hiahiatia e koe te whakateretanga ahuwhānui - ko ngā kaiwhaiwāhi Wīwī, ngā pūrere pāpāho, ngā TV mātauranga me ngā taupānga whakarākei katoa e whakataki ana i te MP4 māori. Ka tahuri ki te WebM mō te whakatū i te Wīwī i reira he iti iho te rahi o te faila. Ka tahuri ki te MOV ina mahi i roto i te Whakahautanga Whakamutunga, i ētahi atu pūtautau Apple-māori rānei.

Ka whakakōpāho anō te whakarerekētanga MPEG i te vitio?

Ki te ōrite te pūtake codec i roto i MPEG ki te pūrere ūnga, ka whakawātea tātau me te kore whakawaenga (āhua, kāore i te ngaro). Ki te rerekē te codec (hei tauira, HEVC ki H.264) ka whakawaenga anō te ataata — he pōturi ake, he iti iho te utu o te āhuatanga whakawhanake.