HLS vs RTSP: Which Streaming Protocol Is Better?

HLS and RTSP are fundamentally different approaches to streaming. HLS uses standard HTTP and works by downloading small files sequentially. RTSP (Real-Time Streaming Protocol) uses a dedicated streaming server that sends a continuous stream to the client.

HLS is the better choice when:

• You need to reach a broad web audience (browser compatibility)
• You want to use a CDN for global delivery
• You need adaptive bitrate streaming
• You're delivering to both live and VOD audiences
• You want to leverage existing HTTP infrastructure

RTSP is still relevant for:

• Security camera systems (IP cameras, NVRs, DVRs)
• Real-time monitoring and surveillance
• Low-latency applications where sub-second delay matters
• Closed networks where firewall traversal isn't an issue
• Legacy systems that already use RTSP

For web-based streaming, HLS is almost always the better choice. Its HTTP-based delivery, CDN compatibility, and broad browser support make it the de facto standard for internet video. RTSP remains useful for specialized use cases like security cameras and real-time monitoring where ultra-low latency is critical and the audience is small.