[請問] 720P 30fps如何換算MB:－看見台灣線上看, 看見台灣上映戲院, 看見台灣心得, 看見台灣紀錄片, 看見台灣dvd, 看見台灣原聲帶, 看見台灣下載

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批踢踢實業坊 ask 板

[請問] 720P 30fps如何換算MB

Jul 17th 2013, 11:09, by fatfatgigi

作者fatfatgigi (華安!)

站內ask

標題[請問] 720P 30fps如何換算MB

時間Wed Jul 17 11:09:56 2013

大家好,我想請教IP cam畫素問題如果我IP cam為百萬畫素 720P 30fps 我要如何換算1秒流量為多少MB呢? 煩請幫忙了謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 1.173.214.179

→ DKer:假設每畫素的資訊用1 byte儲存, 720p解析度為1280*720 07/17 11:15

→ DKer:耗用1280*720=921600 bytes(每個畫面) 07/17 11:16

→ DKer:每秒30次更新頻率: 921600*30=2764800 bytes(每秒) 07/17 11:16

→ DKer:2764800 bytes/s = 26.367 MB/s (約略) 07/17 11:17

→ DKer:好大啊! 07/17 11:18

→ bailan:實際上大概會有用些壓縮，錄個幾分鐘然後推算看看吧 07/17 11:18

推 BSpowerx:MP4的720p檔案30分鐘大約200MB 07/17 11:21

推 hsinyeh:看碼率有差 07/17 11:24

→ eggimage:路搖知碼率 07/17 11:34

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