feat(RTSP streaming): Add Production-Ready RTSP Support with H.264/H.265 Auto-Detection and Configurable Transport

[subhashchy]

Enhanced RTSP Support for Hailo Pipeline

Feature Description

Added robust RTSP streaming support to the Hailo pipeline with automatic codec detection and improved reliability.

Key Enhancements

• Added automatic codec detection supporting both H.264 and H.265 (HEVC) streams
• Implemented configurable RTSP transport protocols (TCP/UDP/HTTP)
• Added adjustable latency control for fine-tuning stream delay
• Enhanced buffer management for better stream stability
• Added retry mechanism for connection resilience

Technical Implementation

• Integrated rtpbin for improved RTP packet handling
• Added parsebin and decodebin3 for automatic codec detection and robust decoding
• Implemented leaky queues for better memory management
• Added configurable timeouts and retry mechanisms
• Added stream format validation through capsfilter

Configuration Options

• --rtsp-protocols: Choose between tcp/udp/udp-mcast/http (default: tcp)
• --rtsp-latency: Adjust stream latency in milliseconds (default: 100ms)

Use Cases

1. Security Camera Integration

   • Direct connection to IP cameras
   • Support for both H.264 and H.265 security cameras
   • Multiple stream quality support

2. Industrial Monitoring

   • Real-time process monitoring
   • Quality control systems
   • Production line surveillance

3. Smart City Applications

   • Traffic monitoring
   • Public space surveillance
   • Crowd analysis

Example Usage

# Basic RTSP stream
python detection.py -i rtsp://username:password@ip:port/stream

# Low-latency configuration
python detection.py -i rtsp://ip:port/stream --rtsp-latency 50

# UDP protocol for local network
python detection.py -i rtsp://ip:port/stream --rtsp-protocols udp

Performance Considerations

• Automatic codec detection adds minimal overhead
• Configurable latency allows balancing between delay and stability
• Memory-efficient queue management prevents buffer bloat
• Retry mechanism ensures robust operation in unstable networks

Compatibility

• Works with major IP camera brands (Hikvision, Dahua, Axis, etc.)
• Supports standard RTSP protocol implementations
• Compatible with both H.264 and H.265 streams
• Tested with various stream resolutions (up to 4K)