Please provide complete information as applicable to your setup.
• Hardware Platform (Jetson / GPU) 4090
• DeepStream Version 7.0
• JetPack Version (valid for Jetson only)
• TensorRT Version
• NVIDIA GPU Driver Version (valid for GPU only)
• Issue Type( questions, new requirements, bugs)
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)
• Requirement details( This is for new requirement. Including the module name-for which plugin or for which sample application, the function description)
I followed the code and tutorial on using NTP with DeepStream from the following sources:
- NTP Timestamp in DeepStream — DeepStream documentation
- deepstream_python_apps/apps/deepstream-rtsp-in-rtsp-out/deepstream_test1_rtsp_in_rtsp_out.py at master · NVIDIA-AI-IOT/deepstream_python_apps · GitHub
In the code, I modified it based on deepstream_test1_rtsp_in_rtsp_out.py:
def decodebin_child_added(child_proxy, Object, name, user_data):
print("Decodebin child added:", name, "\n")
if name.find("decodebin") != -1:
Object.connect("child-added", decodebin_child_added, user_data)
if ts_from_rtsp:
if name.find("source") != -1:
pyds.configure_source_for_ntp_sync(hash(Object))
if ts_from_rtsp:
streammux.set_property("attach-sys-ts", 0)
Make sure RTSP source can send RTCP Sender Reports.
Confirm: In host machine, I run
gst-launch-1.0 rtspsrc location="rtsp://AI:Aic%4013579@192.168.0.8:554" ! fakesink
and
sudo tshark -i eno1 -f "src host 192.168.0.8" -Y "rtcp"
But it look like send UDP mode for RTCP
Currently, I using pyds but when I run deepstream test5 with C version, it has the same issues
Can you give me some documents related to this comment in the image, why force to use TCP mode
If I using TCP mode, my pyds and C version code crash after run 4-5s
However, if I don’t set the protocol to TCP using either:
appCtx[i]->config.multi_source_config[j].select_rtp_protocol = 0x04;
or
Object.set_property("protocols", GST_RTSP_LOWER_TRANS_TCP)
then my code runs successfully, but the NTP timestamp does not seem correct in both case (TCP, UDP)— it always raises the following:
Warning: gst-library-error-quark: Either host or Source 0 seems to be out of NTP sync SYS TIME = 2025-06-20T10:23:28.447Z CALCULATED NTP TIME = 1970-01-01T00:00:00.000Z (5): gstnvstreammux_ntp.cpp(110): check_if_sys_rtcp_time_is_ntp_sync (): /GstPipeline:pipeline0/GstNvStreamMux:streammux
If I don’t enable RTCP in the camera setup, the following message does not appear:
208 2.637767168 192.168.0.8 → 192.168.1.90 RTCP 114 Sender Report Source description
If enable RTCP and configuration like above, if using TCP mode, cause error
In container based on image: nvcr.io/nvidia/deepstream:7.0-triton-multiarch
timedatectl
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
I’m currently running pyds code inside a Docker container and have tried using network_mode: host, but the problem still occurs.
I’m wondering whether the issue is caused by my code or by the RTSP camera setup. Could you give me some ideas? Thank you!