- b -

• background_source_type : agora::rtc::VirtualBackgroundSource
• backgroundColor : agora::rtc::LiveTranscoding
• backgroundImage : agora::rtc::LiveTranscoding
• backgroundImageCount : agora::rtc::LiveTranscoding
• bitrate : agora::rtc::ScreenCaptureParameters , agora::rtc::VideoEncoderConfiguration
• blur_degree : agora::rtc::VirtualBackgroundSource
• bottom : agora::media::ExternalVideoRenerContext , agora::rtc::Rect
• buffer : agora::media::ExternalVideoFrame , agora::media::IAudioFrameObserver::AudioFrame , agora::media::VideoEncodedFrame , agora::rtc::IMetadataObserver::Metadata , agora::rtc::IPacketObserver::Packet , agora::rtc::ThumbImageBuffer
• bytesPerSample : agora::media::IAudioFrameObserver::AudioFrame