可选择的视频和音频流比特率允许我们将占用的网络带宽与存储的视频内容所需的视频质量和容量进行权衡。
Selectable video and audio streaming rates allowed us to balance the amount of network bandwidth consumed against the required video quality and volume of stored video content.
windows上的wchar_t型一般占用16比特大小，所以在windows上可以使用使用大约65535个不同的字符。
One Unicode symbol occupies one wchar_t element, which is 16-bit on the Windows platform, and can represent up to 65535 different values.
前向纠错需要占用大量的带宽：这取决于编码速率选择，大量的编码比特和数据比特一起传输。
FEC consumes significant bandwidth: depending on which coding rate is chosen, a number of coding bits are transmitted along with the? Data 'bits.
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