Ma CD a Video (amadziwanso VCD) adalengedwa mu 1993, zaka zochepa pamaso pa DVD-kanema (zomwe timatcha DVD). VCD sichinafanane ndi momwe DVD imachitira, komabe. Ngakhale mafomu onse akusewera kanema, pali kusiyana pakati pao.
Kufufuza Kusiyana
Khalani okonzeka, tidzakhala ndi ngongole kuno. VCD yamaganizo a digito amaumirizidwa pogwiritsa ntchito codec MPEG-1. Vuto la MPEG-1 likhoza kuseweredwera kumasewero alionse a DVD kapena pulogalamu ya DVD yomwe imatha kusokoneza video ya MPEG-1. VCDs inganenedwe kuti ndi yapamwamba ya vidiyo ya VHS, ndipo ikhoza kugwira pafupifupi ola limodzi la mavidiyo a digito.
Mavidiyo a digito a DVD akugwiritsidwa ntchito pogwiritsa ntchito codec MPEG-2. Mafilimu a MPEG-2 amafanana ndi vidiyo ya DVD yapamwamba ndipo akhoza kusewera ndi osewera DVD kapena pulogalamu ya DVD. Ma DVD amatha kujambula mavidiyo awiri a digito (kapena zambiri, onani nkhaniyi, Zojambula za DVD, Kodi DVD-5, DVD-10, DVD-9, DVD-18 ndi DVD Zojambula Zachiwiri zimakhala zotani )? Popanda kutenga luso, MPEG-2 kupanikizika ndi kupambana kwapamwamba kwapamwamba kuposa MPEG-1 ndipo kumakhala ndi khalidwe lapamwamba kwambiri la zithunzi za DVD kuposa Video CD.
Mfundo yaikulu pa DVD ndi VCD ndi yakuti ma DVD akhoza kugwira kawiri kawiri kanema kanema monga VCDs, ndipo ndi kujambula kwapamwamba kwambiri. VCDs ndi zabwino pamene mukufuna kupanga mavidiyo ambiri kuti mugawane, ndipo khalidwe silovuta. Zonsezi, mudzafuna kumamatira ma DVD pa zojambula zambiri za kanema.
Kodi Mukugwiritsabe Ntchito VCD?
Kawirikawiri, sikugwiritsanso ntchito VCD mtundu. Sikuti kutalika kwa kanema kumafupikitsa pa VCD kusiyana ndi maonekedwe ena, chisankho chiri pansi pa zomwe ife tonse tazizoloŵera. Ndipansi pati? Chisankho chapamwamba-choposa ndi pixelisi zoposa 2 miliyoni pomwe VCD ili pansi pa 85,000 pixels.
Chifukwa cha kufulumira kugwirizanitsa ndi kufanana kwa malo omwe akugawanika pa Intaneti (ie Youtube kapena Vimeo pakati pa ena), anthu samatentha VCD kapena DVD zambiri. Ndikosavuta kupanga kanema yanu ndikuyiyika ku malo ogawana nawo.