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HDMI encoders support multiple protocol functions (RTMP/RTSP/SRT). At present, HDMI encoder outputs need to support the RTMP/RTSP protocols; RTMP is the standard protocol for encoder outputs today. Given the large size of the PC market, with PCs mainly running Windows, and since Windows browsers generally support Flash, and Flash in turn supports the RTMP protocol, virtually all encoders (such as those used for cameras) support RTMP output. Compared to the latency of HTTP-based streams (which is generally over 10 seconds), RTMP has lower latency, which is why it is widely used in live streaming applications. Next, we will focus on the SRT protocol, which is a very popular open-source low-latency video transmission protocol these days. By utilizing SRT reliable transmission technology, secure and reliable high-definition video transmission and distribution between multiple locations in a regular Internet environment can be successfully achieved. SRT supports AES encryption to ensure end-to-end security for video transmission. In terms of reliability, SRT ensures stable transmission through Forward Error Correction (FEC) technology. In terms of low latency, since SRT is built on top of the UDT protocol, it addresses the issue of high transmission latency associated with the UDT protocol. The UDT protocol is based on the UDP network communication protocol. SRT solves complex transmission timing issues, enabling real-time transmission of high-throughput files and ultra-high-definition videos. Therefore, many live broadcasting industries are currently inclined to choose encoders that support the SRT protocol.