现在市面上还有很多卖国标GB28181设备端SDK的，EasyGBD免费的，基于C/C++开发的国标GB28181设备库。

技术规格

• 编程语言：C/C++，能适配任何平台，包括但不限于Windows、Linux、Android、ARM
• 视频编解码器：H264、H265、MPEG4。
• 封装格式：PS封装。
• 通信协议：支持SIP协议栈，自主开发，确保可靠稳定的通信。
• 网络功能：支持心跳响应检测、服务器离线检测、自动重连机制。
• RTCP支持：支持RTCP增强对流媒体传输的监控和管理。
• 代码特点：代码迁移简单易行，适合开发支持GB28181的IP摄像机、NVR等设备。
• 性能特点：目标文件小，运行稳定。

Technical specifications

• Programming language: C/C++,Support Windows,Linux,Android,ARM,etc…
• Video codec: H264, H265, MPEG4.
• Encapsulation format: PS encapsulation.
• Communication protocol: Supporting the SIP protocol stack, developed independently to ensure reliable and stable communication.
• Network function: Support heartbeat response detection, server offline detection, and automatic reconnection mechanism.
• RTCP support: Support RTCP to enhance the monitoring and management of streaming media transmission.
• Code characteristics: Code migration is simple and easy, and it is suitable for developing IP cameras, NVRs, and other devices that support GB28181.
• Performance characteristics: Small target file size, stable program operation.

EasyGBD是免费的，下载地址：https://www.easydarwin.org/tools/169.html