variable adj. 1.易变的,变化无常的,无定的 (opp. constant, steady)。 2.可变的,能变的;变换的。 3.【数学】变量的;【天文学】变光的;【生物学】变异的。 Prices are variable according to the exchanges. 物价跟着汇率变动。 a man of variable character 反复无常的人。 a rod of variable length (伸缩)如意棒。 a word of variable construction 可以作种种解释的词。 variable capital 可变资本。 a variable budget 临时预算。 n. 1.易变的东西。 2.【数学】变量,变数,变项,变元 (opp. constant);【天文学】变星 (=variable star);【航海】(方向不定的)变风,不定风 (opp. trade wind); 〔pl.〕 (贸易风带中的)变风带。 adv. -ably ,-ness n.
Abr has a variable bitrate for each frame , but its average bitrate is a constant Abr则是每个帧都有一个可变的比特率,但是其平均比特率是恒定的。
Based on dct domain r - d analysis , we provide a new constant bitrate ( cbr ) rate control algorithm , which can cure tm5 algorithm " two limitations , buffer conformance and scene cut problem . for variable bitrate ( vbr ) rate control , we proposed a single - pass vbr rate control algorithm for real - time video coding application 对于vbr码率控制,作者还提出了一种面向实时视频编码应用的单通道vbr码率控制算法,它避免了多通道vbr算法的多次编码或预分析的开销,减小了量化步长波动,可提供稳定的视频质量。
百科解释
Variable bitrate (VBR) is a term used in telecommunications and computing that relates to the bitrate used in sound or video encoding. As opposed to constant bitrate (CBR), VBR files vary the amount of output data per time segment.