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1. Internet AV Steam Streaming - Webcast on Demand

Internet AV Steam Streaming mainly refers to the technology of streaming media (video, audio) through the network, which can realize webcast and on-demand. Common protocols include RTMP, RTSP, HLS, RTMFP, etc. The specific introduction is as follows: Definition and principle of streaming transmission. Streaming transmission is a general term for the technology of transmitting streaming media (such as video and audio) through a network. The core is to compress audio and video programs into data packets, transmit them in segments to user devices through the network, and then decompress and play them in real time. Its features include: real-time performance: supporting live streaming or instant playback of pre stored videos, users do not need to wait for the complete file download. Segmented data transmission: After the audio and video materials are compressed, they are transmitted in fixed size data packets and played while being transmitted. The essence of streaming media: Streaming media is a media delivery method, not a new medium, relying on servers to send data packets and user devices to decompress and restore content. There are two implementation methods for real-time streaming: supporting live streaming, requiring dedicated servers (such as Adobe Media Server) and a stable network environment, with low latency but affected by bandwidth fluctuations. Progressive Streaming: Suitable for on-demand playback of pre stored movies, users download and play from the starting point, supports fast forward/pause, but cannot achieve real-time interaction. Common streaming protocols and application scenarios RTMP (Real Time Messaging Protocol) features: Based on TCP o

r polling HTTP protocol, data is encapsulated into fixed size packets and supports multi-channel network streaming transmission. Application: Flash player object, video, audio transmission, widely used in live streaming scenarios (such as game live streaming, online education). RTSP (Real Time Streaming Protocol) features: a protocol that controls multimedia streaming, supports multicast, reduces server load, and is suitable for multi-party video conferencing. Application: IP camera monitoring, remote medical care, enterprise level video conferencing system. HLS (HTTP Live Streaming) features: The HTTP based protocol developed by Apple divides the live stream into short duration (usually 2-10 seconds) MPEG-TS files, which are downloaded and played in sequence by the client. Application: Live streaming and on-demand on iOS devices (iPhone, iPad), such as sports event live streaming and online video platforms. RTMFP (Real Time Media Flow Protocol) features: A protocol developed by Adobe that supports direct communication between end-users (P2P) without the need for server forwarding, reducing latency and improving image quality. Application: Audio and video chat, multiplayer gaming, community live streaming, but does not support file sharing. Technical advantages and challenge advantages: Cross platform compatibility: Supports various devices such as PC, mobile (Android/iOS), OTT TV, etc. Low latency interaction: RTMP, RTMFP and other protocols meet real-time communication needs (such as live barrage and multiplayer games). Scalability: The HLS protocol adapts to different network environments through segmented transmission, enhancing user experience. Challenge: Network Dependency: Insufficient or fluctuating bandwidth may

1. Internet AV Steam Streaming - Webcast on Demand

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