This document defines RTP, consisting of two closely-linked parts: o the real-time transport protocol (RTP), to carry data that has real-time properties. o the RTP control protocol (RTCP), to monitor the quality of service and to convey information about the participants in an on-going session. The latter aspect of RTCP may be sufficient for ...

This protocol has the following RTCP-related timer event processing rules, in addition to those specified in [RFC3550]

2025年1月23日 · This protocol is used to monitor transmission statistics and quality of service and aids in controlling congestion. RTCP provides a standard way to carry statistical and control data, such as sender or receiver reports that describe the quality of service, bandwidth, media characteristics, and network delay. RTP (Real-Time Protocol)

当 RTP需要进行音视频同步的时候，接受者就需要使用 CNAME来使得同一发送者的音视频数据相关联，然后根据RTCP包中的计时信息(Network time protocol)来实现音频和视频的同步。

2022年9月19日 · 实时传输控制协议 (Real-time ControlProtocol，RTCP)是和 RTP 一起工作的控制协议。 在 RTP 会话期间，通过使用不同的端口号可把RTP数据包和RTCP信息包区分开来,每个会话参与者周期性地向所有其他参与者发送RTCP控制信息包。

2019年12月24日 · 简单来说，就是主叫侧基站有发送RTP包，但IMS侧的SBC未收到主叫侧基站发送的RTP包，但基站和SBC网元间经过了EPC网络，而EPC网络是异厂家设备，需协调EPC网络联合抓包进一步定位RTP包丢失的原因。 另外，本文中虽然表现为掉线，是因为用Tphone测试进行自动拨测，被叫侧因RTP超时而主动上发BYE消息。 从实际用户感知上来说，主叫能够收到被叫的RTP包，而被叫一直未收到主叫的RTP包，是一种单通现象。 文章浏览阅读6.2k次，点赞3 …

2024年10月30日 · RTCP Send timer: When the RTCP send rate is "normal", its next value is computed as specified in [RFC3550] section 6.2. When RTCP send rate is fast, its next value MUST be set to 250 milliseconds. This timer is started each time an RTCP compound packet is sent and is used to schedule the sending of the next RTCP packet pairs.

2024年10月30日 · RTPME has the following RTCP-related timer event processing rules, in addition to those specified in [RFC3550] and [RFC3551]. RTCP Send timer expires: A new RTCP probe and a new RTCP Compound packet are prepared and sent to the network destination.

2016年8月7日 · RTT指 round-trip time，即计算AB两端的往返时延. 这里可以分成两个问题： 如何在A端估算A和B之间的RTT时间? 如何在B端估算A和B之间的RTT时间? 一、假设A -> B 发送视频. 那么如何在A端估算A->B之间的RTT时间? 中描述了如何在发送端计算RTT时间. A 发送 SR 包, 并记录SR包的发送时间. 记为send_time. B 接收到 A的SR包后, 记录下最后一次接受到SR包的时间. 记为last_recv_time. ... (B等待发送rtcp包) B 发送 RR包, 计算从 [last_recv_time] 到 当前时间 …

The RTP Control Protocol (RTCP) is a binary-encoded out-of-band signaling protocol that functions alongside the Real-time Transport Protocol (RTP). RTCP provides statistics and control information for an RTP session. It partners with RTP in the delivery and packaging of multimedia data but does not transport any media data itself.