For example, Apple's guidelines state that a video's audio stream should never have a higher bitrate than 40kbps.
例如，苹果的指引说明视频的音频流，不应该比40kbps的比特率更高。
Each media stream utilizes a corresponding bitrate, and the plurality of media streams has a combined bitrate.
每个媒体流利用相应的比特率，并且多个媒体流具有组合比特率。
应用推荐