Ngati mukufuna kukopera ma CD anu nyimbo kumvetsera ngati MP3 , WMA , AAC , etc., kapena muyenera kusintha pakati pa mawonekedwe, ndiye ndibwino kudziwa chomwe CBR ndi VBR zikutanthauza musanayambe.
Pansipa pali chiyambi pa zomwe zidulezi zikutanthauza, momwe amagwirira ntchito, komanso kusiyana pakati pa njira ziwirizi.
Zindikirani: CBR ndi VBR ndizithunzithunzi zazinthu zowonjezereka zamagetsi monga CDIplay Archived Comic Book files ndi volume boot mbiri , koma palibe chochita ndi encoding monga tafotokozera pano.
CBR Encoding
CBR imaimira bitrate nthawi zonse , ndipo ndi njira yokhayikira yomwe imapangitsa kuti bitrate chimodzimodzi. Pamene deta yamakono imasindikizidwa (ndi codec ), mtengo wapatali umagwiritsidwa ntchito, monga 128, 256 kapena 320 Kbps.
Ubwino wogwiritsa ntchito njira ya CBR ndi kuti mauthenga a audio amatha mofulumira (poyerekeza ndi VBR). Komabe, mafayilo omwe adalengedwera sagwiritsidwa ntchito bwino pamtundu wotsalira monga momwe ziliri ndi VBR.
CBR imathandiza pazithunzithunzi zofalitsa multimedia. Ngati kugwirizana sikungokwanira, kunena, 320 Kbps, ndiye bitrate ya 300 Kbps pamphindi kapena pansi ingakhale yopindulitsa kwambiri kusiyana ndi yomwe inasintha pakupatsirana kwachidziwitso kuyambira pakhoza kupita pamwamba kuposa zomwe zimaloledwa.
VBR Encoding
VBR ndi yochepa kwa variable bitrate ndipo, monga mukuganiza, zosiyana ndi CBR. Ndi njira yododometsa yomwe imathandiza bitrate ya fayilo ya audio kuti iwonjezere kapena kuchepa. Izi zimagwira ntchito zosiyanasiyana; Mwachitsanzo, encoder LAME ikhoza kukhala pakati pa 65 Kbps ndi 320 Kbps.
Mofanana ndi CBR, mawonekedwe a audio monga MP3, WMA, OGG , etc. kuthandizira VBR.
Phindu lalikulu la VBR poyerekeza ndi CBR ndi khalidwe labwino kuti liyike kukula kwake. Nthawi zambiri mumatha kukwaniritsa kukula kwa mafayilo poyandikirako mawu ndi VBR kusiyana ndi CBR chifukwa njira ya bitrate imasinthidwa malingana ndi mtundu wa phokoso.
Mwachitsanzo, bitrate idzachepetsedwa kwambiri kuti nyimbo zikhale zotonthoza kapena zocheperachepera. Pazinthu zambiri zovuta za nyimbo zomwe zili ndi maulendo ophatikiza, bitrate idzawonjezeka (mpaka 320 Kbps) kuonetsetsa kuti khalidwe labwino likusungidwa. Kusiyana kumeneku mu bitrate kudzathandiza kuchepetsa malo osungirako oyenerera poyerekeza ndi CBR.
Komabe, kusokonekera kwa mafayilo a VBR omwe ali ndi maofesiwa ndikuti mwina sangagwirizane ndi zipangizo zakale zamagetsi monga CBR. Zimatengera nthawi yaitali kuti amvetsere mawu pogwiritsa ntchito VBR chifukwa njirayi ndi yovuta kwambiri.
Ndi Mtundu Witi Uyenera Kusankha?
Pokhapokha mutagwiritsidwa ntchito ndi hardware wakale yomwe imangotsimikizira zokhazokha zojambulidwa pogwiritsa ntchito CBR, ndiye VBR ndi njira yokonzedweratu. Thandizo kwa VBR mu zipangizo za hardware monga ma MP3, PMPs , ndi zina zotero, zomwe zimagwidwa ndikuphonya, koma masiku ano nthawi zambiri zimakhala zofunikira.
Monga tafotokozera pamwambapa, VBR imakupatsani mwayi wabwino pakati pa khalidwe ndi kukula kwa fayilo. Choncho ndizofunikira kwa mafayilo osungirako zosungirako kapena kumene mukufuna kugwiritsa ntchito bwino njira zina zosungiramo monga magetsi a USB , makadi ofiira, ndi zina zotero.