Gstreamer RTSP Server on Apalis TK1

Here’s an odd one:

I’ve constructed a gstreamer pipeline in C++ represented by this image:

To the udpsink at the end of the pipeline, I attach an instance of gst-rtsp-server (of type RTSPServer) that launches the following “pipeline” to actually serve the stream to incoming requests. The stream URL is rtsp://

mRtspServer.Pipeline("( udpsrc port=5005 ! application/x-rtp,encoding-name=H264,payload=96 ! rtph264depay ! rtph264pay name=pay0 pt=96 ) ");

Occasionally, this works to stream live video over RTSP using VLC. However, a lot of the time, it fails and I get the following interesting line in the gst debug log:

client 0xeff940: received a request PLAY rtsp:// 1.0

When this happens, of course it doesn’t find any media at that erroneous URL, and thus fails the pipeline. When it does work, I get this equivalent line in the log:

client 0xeff940: received a request PLAY rtsp:// 1.0

It looks like somehow the URL is getting corrupted in the process of negotiating the connection? I will say that when I manually recreate the pipeline via string encoding it works every time. I will also say that before I inserted the queue into the attached image, it never worked, so the queue “helped” some, but obviously there are still issues.



Oh, one more interesting thing, every single time, whether it works or not, the first RTSP request handled by the RTSP server comes in as a request that looks like this:

client 0xeb48a0: received a request OPTIONS rtsp:// 1.0


Hi @grh,

Could you please create and share minimal reproducible example? So we can run and debug it locally? Could you also provide an exact BSP version you are using?