Error converting RTP stream (Kurento) to RTSP using GStreamer in a Flask microservice

[Eugenio Vitor]

Problem Description:

I am trying to capture an RTP stream from Kurento, transcode it, and send it as an RTSP stream to DeepStream within a Flask microservice. However, when executing the following command, I encounter multiple errors:

gst-launch-1.0 -v rtspsrc location=rtsp://127.0.0.1:8554/test latency=500 ! decodebin ! autovideosink

Main errors in the log:

sys:1: Warning: g_object_ref_sink: assertion 'g_atomic_int_get (&object->ref_count) >= 1' failed
ERROR:../pygobject-3.52.3/gi/pygobject-object.c:717:pygobject_register_wrapper: assertion failed: (gself->obj->ref_count >= 1)

And also:
ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0: Could not read from resource.
ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0: Could not write to resource.

Environment:

• Operating System: Windows 10

• GStreamer Version: 1.22.0

• PyGObject Version: 3.52.3

• Hardware: Intel Iris Xe Graphics

• Framework: Flask microservice

Expected Behavior:
I want to take an RTP stream from Kurento, encode it as RTSP, and send it to DeepStream within my Flask microservice. How can I resolve this error and ensure pipeline stability?

[Neil C Smith]

On Wed, 2 Apr 2025 at 09:37, Eugenio Vitor <lopeseug...@gmail.com> wrote:
> I am trying to capture an RTP stream from Kurento, transcode it, and send it as an RTSP stream to DeepStream within a Flask microservice. However, when executing the following command, I encounter multiple errors:

...

> Environment:
>
> Operating System: Windows 10
>
> GStreamer Version: 1.22.0
>
> PyGObject Version: 3.52.3
>
> Hardware: Intel Iris Xe Graphics
>
> Framework: Flask microservice

Where is gst1-java-core fitting into all this, and if it does, what
version and what Java environment?

Best wishes,

Neil

--
Neil C Smith
Codelerity Ltd.
www.codelerity.com

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