MPG ndi fayilo yowonjezera ya mafayilo amakanema a MPEG-1 kapena MPEG-2. Nthawi zambiri amagwiritsidwa ntchito posewera ndi kugawa makanema.
Ntchito Zofala
Video distribution
Broadcast media
DVD video
MPG Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu
Kodi ndi MPG kanema wapamwamba?
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MPG ndi video chidebe kuti ali ndi imodzi kapena zambiri video ma streams, audio nyimbo, ndi zosankha subtitle. Zosiyana zinyalala kugwirizana codecs, kotero kugwirizana kumadalira onse wrapper ndi zimene zili m'kati mwake.
Kodi ndi MPEG pulogalamu mtsinje, ndi chifukwa chiyani ndi wanga fayilo imodzi?
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Ndi multiplex yopangidwa kuti ikhale yosinthidwa ndi zida zamagetsi zamagetsi zamagetsi, sizosinthidwa pakompyuta. Mapaketi a audio ndi video amaphatikizidwa ndi ma markers a nthawi kuti set-top box ikhoza kusewera kuchokera kulikonse m'madzi, popanda index ndi popanda kusungira fayilo yonse. Chithunzicho ndichifukwa chake MPG zolemba zimasewera pa zida zakale mosasamala kanthu komanso zimasokoneza mapulogalamu amakono nthawi zonse. Zina mwa zinthuzi ndi MPEG-1 kapena MPEG-2 kanema ndi MP2 audio; muxing ndi GOP chilengedwe ndi ofanana ndi.mpeg fayilo.
Nchifukwa chiyani pulogalamu yofalitsa ndi yolemba ima insist pa MPG?
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Chifukwa cha zonse mzere anapangidwa pa izo. Playout ma seva, DVD authoring zipangizo ndi ingest zipangizo anafotokozedwa m'munsimu format pamene izo zinali zatsopano, ndi zipangizo ndi zaka makumi awiri ntchito moyo si anapeza re-anafotokozedwa. Fayilo kutuluka mwa iwo zipangizo ndi format dongosolo anapangidwa kuti emit, si kusankha aliyense anachita zaka zaposachedwapa. MPG ndi kuwonjezeka DVD authoring mapulogalamu, older camcorders ndi kufalitsa ingest zipangizo kuzindikira, kotero kuti imakhala zothandiza kwa iwo ma pipelines.
Kodi MPG ndi mtundu umodzi monga momwe zimakhalira?
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Yes.
Nchifukwa chiyani msakatuli wanga sadzasewera fayilo ya MPG?
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Mawebusayiti amatumiza decoders kwa mndandanda wocheperako wa mafomu, ndipo MPG siyipatsidwa - lisensi, mtundu wa codec womwe umalola, kapena nthawi yake imatenga. Fayilo siyimawonongeka ndipo wosewera wa desktop adzatsegula, koma palibe chomwe mungachite patsambalo kuti mupange msakatuli. Kusintha kwa webusaitiyi ndi njira yokha yotsimikizika yosewera. MPG amalandira zonse MPEG-2 kuletsa - heavy bitrate, interlacing, palibe soft subtitle - kuphatikizapo kusokonezeka kwa awiri zowonjezera kwa mtundu wina.
Nchifukwa chiyani mavidiyo anga a MPG amasonyeza makompyuta a comb pa chilichonse chomwe chimayenda?
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Chifukwa chake ndi interlaced. Zolemba mu mtunduwu nthawi zambiri zimachokera ku broadcast ndi DVD era, komwe chilichonse chimasunga ngati madera awiri a half-height omwe amatenga gawo la 50 la theka la mphindi. Progressive screen ikuwonetsa zonse ziwiri pamodzi, kotero kuyendetsa pakati pa ma exposition awiri amawoneka ngati kukongoletsa kwa horizontal. Deinterlacing pa kusintha kumapanga madera kukhala ma frame onse ndipo artefact imatha kutuluka bwinobwino. MPG ndi chimodzimodzi MPEG pulogalamu mtsinje monga.mpeg - atatu-alemba kuwonjezeka ndi DOS-era kugwa, si mtundu wina.
Kodi MPG idzasewera pafoni kapena TV popanda kutulutsa batri?
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Nthawi zambiri ndi choncho, chifukwa ma chips mu mafoni, ma tablet ndi ma televisions amachotsa ma code a ma payloads amtunduwu m’ma silicon osankhidwa osati pa main processor. Izi ndi zosiyana pakati pa kanema womwe umasewera bwino kwa maola awiri ndi wina amene umatentha chipangizocho ndipo umachisiya m’maola asanu ndi awiri. Pamene mtunduwo umagwa pansi ndi kuthandizira kwa app kuposa kuchotsa ma code – codec ndi bwino, wrapper ndi zomwe gallery app ingakane.
