Problem with "rtpsrc" and "gst-rtsp-server"

[Myzhar]

Hi all,

I'm trying to restream a h264 rtp stream to rtsp using gst-rtsp-server, but I'm getting a strange error.

I'm using the "test-launch" example (https://github.com/GStreamer/gst-rtsp-server/blob/master/examples/test-launch.c) and it correctly works using the default input string:
"videotestsrc ! x264enc ! rtph264pay name=pay0 pt=96"

When I try to replace the pipeline string with this:
"udpsrc multicast-iface=eth0 multicast-group=239.0.0.105 auto-multicast=true port=16000 ! application/x-rtp, encoding-name=H264, payload=96"
the server starts, but when a client tries to connect it crashes with the following errors:
"gst_element_make_from_uri: assertion 'gst_uri_is_valid (uri)' failed"
and
"invalid cast from 'GstUDPSrc' to 'GstBin'"

The idea is to try to avoid H264 decoding and encoding since the RTP stream is already encoded in H264.

Thank you
Walter

[Sebastian Dröge-3]

On Thu, 2016-10-27 at 07:41 -0700, Myzhar wrote:

> Hi all,
>
> I'm trying to restream a h264 rtp stream to rtsp using gst-rtsp-server, but
> I'm getting a strange error.
>
> I'm using the "test-launch" example
> (https://github.com/GStreamer/gst-rtsp-server/blob/master/examples/test-launch.c)
> and it correctly works using the default input string:
> "*videotestsrc ! x264enc ! rtph264pay name=pay0 pt=96*"
>
> When I try to replace the pipeline string with this:
> "*udpsrc multicast-iface=eth0 multicast-group=239.0.0.105
> auto-multicast=true port=16000 ! application/x-rtp, encoding-name=H264,
> payload=96*"
> the server starts, but when a client tries to connect it crashes with the
> following errors:
> "*gst_element_make_from_uri: assertion 'gst_uri_is_valid (uri)' failed*"
> and
> "*invalid cast from 'GstUDPSrc' to 'GstBin'*"
>
> The idea is to try to avoid H264 decoding and encoding since the RTP stream
> is already encoded in H264.

The caps will be incomplete and it won't work well. You need to
depayload and payload the stream again, e.g. by using

  udpsrc ... ! rtph264depay ! rtph264pay name=pay0

Also gst-rtsp-server needs a payloader is the very last element in any
case, or something that implements the same API at least.

--
Sebastian Dröge, Centricular Ltd · http://www.centricular.com
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel