MP2 ndi audio layer kuti anayamba MP3, ngakhale kugwiritsira ntchito mu digito radio ndi kufalitsa chifukwa decoding ndi yosavuta komanso yolimba.
Ntchito Zofala
Broadcast audio
DVD audio
Legacy media
MP2 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu
Kodi ndi fayilo ya MP2?
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MP2 (MPEG-1 Audio Layer II) is an audio format commonly used in digital broadcasting.
Kodi kuchuluka kwabwino kwatha kuwonongeka m'fayilo ya MP2?
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MP2 compresses ndi modeling zimene nkhope sadzaona - chisoni maganizo ozungulira pansi olimba, ma frequencies pa malire a kumvetsera - ndi mwamsanga kuchotsa izo. Pa bitrate bwino kuti ndi inaudible kwa pafupifupi aliyense. zimene sizosatheka ndi reversible, kotero kusintha kuti lossless mtundu amateteza dziko latsopano kuposa kubwezeretsa oyambirira. MP2 ndi lossy koma amagwiritsa ntchito zosatheka filterbank kuposa MP3, nthawi zambiri ntchito pa 192 mpaka 384 kbps.
Nchifukwa chiyani pulogalamu yofalitsa ndi yolemba ima insist pa MP2?
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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. MP2 ndi kwambiri yolimba kuti bit zoipa ndi yosavuta ku decode, amene ndi chifukwa chake kufalitsa masamba anasiya pa izo nthawi yaitali pambuyo MP3 anafika.
MP2 idafotokozedwa m'mawu okha, popanda malo oyenera kwa mutu, album kapena chithunzi chachithunzi, kotero osewera amabwereranso kukuwonetsa dzina la fayilo. Kusintha kwa mtundu wokhala ndi tag ndi zomwe zimapangitsa kuti laibulale ikhale yosakata - ma tag amalemba nthawi yosintha, osati kubwezeretsedwa, kotero yembekezerani kuwonjezera chilichonse chomwe chimachokera. MP2 amafuna kwambiri bitrate kuposa MP3 kapena AAC kwa ubwino wofanana ndi sizikudziwika kwa ambiri wosuta mapulogalamu.
Yes — format imagwira bwino ntchito ndi ma channels ambiri kuposa awiri, kotero kuti surround mix imasunga ma channels ake ophatikizidwa moyenera, osati kuikidwa mu stereo panjira. Kodi mumamva ngati surround kumadalira pa mbali ya mbali: wolandirayo adzachotsa ma channels onse, foni idzalowetsa panthawi yosewera popanda vuto lililonse. Kusintha kwa stereo-only format kumachititsa kuti kuikidwa kukhale kosalekeza.
Kodi ndi vuto kuti MP2 ili ndi zaka zoposa makumi atatu?
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Age yekha si vuto - angapo mtundu kuchokera kuti nthawi ndibe bwino, makamaka chifukwa chilichonse chili ndi zaka kuti akwaniritse iwo. Zimene zikukhudza ndi zimene nthawi anaganiza: mavidiyo ang'onoang'ono, mofulumira processors, palibe netiweki, ndi zizindikiro aliyense anafunikabe. Pamene amene anaganizabebe, mtundu ndi bwino. Pamene iwo sachita, kuti ndi chifukwa chosintha. MP2 ndi MPEG-1 Audio Layer II, latsopano la MP3 ndi MP3 ndi mtundu wa audio standard kwa DVB ndi DAB kufalitsa.
Nchifukwa chiyani fayilo ya MP2 siyidzasewera mu browser yanga?
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Mawebusayiti amachotsa mndandanda wafupi, wokhazikika wa ma audio formats ndi MP2 ndi kunja kwa izo, kotero fayilo imatsitsa pamalo osewera kapena wosewerayo amadziwitsa vuto. Makompyuta a desktop ndi sewero la codec layikulu limatsegula popanda vuto. Ngati ma audio amayenera kusewera patsamba la webusaiti, kusinthidwa kwake ndi kusinthidwa - palibe kuwongolera kwa wosewerayo kuwonjezera decoder yomwe msakatuli satumiza.
Kodi ndiyenera kusintha bwanji mafayilo anga a MP2?
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Kugwirizana ndi malo osankhidwa, si cholinga. Kwa nyimbo, 256 mpaka 320 kbps ndi zosaoneka kwa aliyense womvetsera; kwa mawu ndi podcasts, 96 mpaka 128 kbps ndi zambiri ndipo amadula fayiloyo ku theka. Kulemba mawu kudzera pa ma bitrate ochokera kumawononga malo - amasunga mawu omwe kale apita kudzera pa lossy pass ndipo sabwezeretsa chilichonse chomwe chimatulutsidwa ndi wolemba mawu woyamba.
Kodi kusintha kumasintha kuchuluka kwa sampling ya MP2 audio yanga?
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Sichoncho ngati simukupempha kuti ichite zimenezi. Kusintha kumasunga mitengo ya machitidwe a m'mawu ochokera - 48 kHz imakhala 48 kHz, 44.1 kHz imakhala 44.1 kHz - chifukwa kubwezeretsa machitidwe a m'machitidwe ndi mtengo wotsika wabwino wopanda phindu pamene palibe chomwe chimafuna kuti. Zosagwirizana ndi izi ndi zachidziwikire: ma CD a nyimbo amafuna 44.1 kHz, ena mwa osewera a hardware oyambirira amavomereza chilichonse chokhudzana ndi izi, ndipo ma pipelines a mawu nthawi zambiri amafuna 16 kHz. Sankhani mitengo yokhayokha m'machitidwe amenewa ndipo musiya izi zipite.
Kodi ndingasinthe dzina la chidacho popeza MP2 sichisintha?
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Kwambiri nthawi zonse, ndipo ndi bwino kumvetsa chifukwa chake: kuwonjezeka ndi label, pamene bytes m'maganizo ndi zopangidwa kwa mtundu wina mfundo. Kusintha dzina amapanga fayilo amene dzina lake amalonjeza chinachake za zinthu zake sikuti kubweretsa, ndi zimene amatsegula izo kapena amakana fayilo kapena misreads izo. Mmodzi waukulu kulephera ndi awiri mtundu amene ndi weniweni wofanana wonyamula pansi pa dzina losiyana - ndi ngakhale pamenepo bwino rewrap ndi chitetezo kuposa kusintha dzina.
Kodi ndingasinthe fayilo yonse ya MP2 mafayilo m'modzimmodzi?
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Ndi akaunti, yeah - kugwa iwo limodzi ndipo iwo ali mu mnda monga ntchito imodzi kuposa kusamalira mmodzi pa nthawi, ndi zosankha zofanana zogwiritsira ntchito m'magulu ndi zotsatira zobwerera limodzi. Free conversions kuyendetsa imodzi wapamwamba pa nthawi (kuphatikiza zida zimatenga awiri); a ndalama malire ndi zimene zimatsegula processing gulu ndi zikuluzikulu per-fayilo malire, amene ndi zimene amachititsa kusintha archive lonse zothandiza.
