problems about linking gst-rtsp-server dynamiclly

[yuanjunjie at kedacom.com]

Hi,
I got a problem when using gst-rtsp-server. The goal of my application is 
to dynamiclly add/remove elements/pipelines after tee. The pipeline can be 
simplified like this:


rtpsrc->rphh264depay->h264parse->tee ->...
                                           ->...

The method to add and remove element is according to the code on github.(
https://github.com/sdroege/gst-snippets/blob/master/dynamic-tee-vsink.c)

When I link fakesink, filesink and autovideosink dynamiclly with tee, they 
work fine together all.
But when linking gst-rtsp-server, something went wrong.

the pipeline is like this:

rtpsrc->rphh264depay->h264parse->tee->queue->inter_sink/inter_src->queue->rtph264pay->...
[               my pipeline                ]                      [ 
gst-rtsp-server pipeline...   ]

If there's no stream playing in my pipeline, it's ok when I view with vlc.
However, if I firstly link [queue->avdec_h264->autovideosink] to the tee 
and the autovideosink shows the media well. Then I dynamiclly link the 
rtsp-server with tee like the pipeline shown above and view it with vlc. 
The stream data is blocked and I have to wait about 10-30s when I see the 
stream in vlc. And then, the latency of stream shown in vlc may be 10s or 
more, and the media in autovideosink is stopped. After I 
closed vlc, the autovideosink plays normally again.

I don't know where the problem is. Do you have any idea with it?
I use gstreamer 1.13.91.

Thnaks.

Junjie Yuan
Shanghai, China.
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