Re: [問題] 計組
※ 引述《loeooo (籃球狂)》之銘言：
: Assume that we wish to compress a gigital video file using MPEG-1 technology.
: The target bit rate is 2Mbps. If the video is displayed at a resolution of
: 352 x 240 at 30 frames per second using 24 bits to represent each color,
: what is the necessary compression ratio to achieve the desired bit rate?
題目希望的 bit rate 為 2Mbps (Mega bits per sec)
而原 video 的 bit rate 為 352 x 240 x 30 x 24 = 60825600 bps
故壓縮比為 2000000/60825600 ≒ 3.3%
--
還真小...
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 125.224.131.112
討論串 (同標題文章)