When EasyCVR is connected to the GB28181 device, what is the reason that the device is connected normally but the video cannot be played?

EasyCVR platform supports massive video device access, video aggregation and management, transcoding and distribution, alarm reporting, platform cascading, intelligent analysis, etc.The platform is based on the cloud-side-end integrated architecture. With its excellent video capabilities, it has become the mainstream video capability layer service platform in the security market.In terms of function, EasyCVR can realize live video surveillance, video recording, retrieval and playback, cloud storage, voice intercom, alarm, platform cascade, equipment monitoring, remote operation and maintenance, etc.

Some users reported that using the national standard GB28181 protocol to connect the device to the EasyCVR platform, the device can be connected normally, but the video cannot be played, so we ask us to assist in the investigation.

After receiving the feedback, the technical staff immediately conducted an investigation and analysis on the above problems.Today, I will share the troubleshooting and solution steps.

1) Check the system kernel when playing the video, and find that there is no stream data generated;

2) Capture packets, check SIP information, and find that the playback process is normal;

3) Extract the RTP data and play it in VLC, the video can be played normally;

4) Adjust the device side to output stream only, and find that it can be played normally.

5) The guess is that it is caused by the compatibility between the device and the platform.Make the following modifications in the code to optimize compatibility to solve the above problems.

EasyCVR is our most comprehensive video platform supporting protocols. The supported protocols include GB/T28181, RTSP/Onvif, RTMP, etc.The platform can support multiple types of device access, including traditional network cameras, NVRs, encoders, 4G mobile law enforcement instruments, etc., and can cover most surveillance brands on the market.

EasyCVR has been applied in a large number of offline scenarios, such as smart factories, smart construction sites, smart security, smart campuses, smart water conservancy, etc.Interested users can go to the demo platform for experience or deployment testing.