Hi everyone. I have a question about the rtpbin element in gstreamer.
I originally tried to get answers on the gstreamer list, but haven't had
any luck. I'm hoping that since rtpbin comes from this project someone
here can help me out. If this is the wrong forum for this question, I
apologize.
I'm trying to build a simple program to send an mpeg4 stream over rtp.
The receiving side is working and it will correctly display video from a
network security camera. I use the following to setup the test stream.
GstElement *source = gst_element_factory_make( "videotestsrc", "source" );
GstElement *encode = gst_element_factory_make( "ffenc_mpeg4", "encode" );
GstElement *pay = gst_element_factory_make( "rtpmp4vpay", "pay" );
g_object_set( G_OBJECT( pay ), "send-config", true, NULL );
GstElement *rtpbin = gst_element_factory_make( "rtpbin", "rtpbin" );
g_object_set( G_OBJECT( rtpbin ), "localport", 9002, NULL );
g_object_set( G_OBJECT( rtpbin ), "destinations", "127.0.0.1:9000", NULL);
g_object_set( G_OBJECT( rtpbin ), "default-pt", 96, NULL );
pipeline = gst_pipeline_new( "Mp4RtpSenderPipeline" );
gst_bin_add_many( GST_BIN( pipeline ), source, encode, pay, rtpbin, NULL );
if( !gst_element_link_many( source, encode, pay, rtpbin, NULL ) ) {
g_warning( "Failed to link elements" );
}
When I run this, I get basically a single frozen frame on the receiver
side. I'm guessing that it could be because I haven't set the clock rate
anywhere on the sending side? I've also tried setting a pt-map on the
sender that is the same as the receiver, thinking it might grab the clock
rate from there. That doesn't seem to change the behavior.
Can anyone help shed some light on what I'm messing up? Thanks.
Aaron
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