Application to record an RTSP/RTP stream to MP4 using gstreamer

[Raja Poonati]

Hi,

I am trying to create an application that records RTSP/RTP stream to a MP4 file.
I am able to record the stream using gst-launch in the following way as mentioned below.

gst-launch-0.10.exe rtspsrc location=rtsp://streaming1.osu.edu/media2/ufsap/ufsap.mov !  rtph264depay byte-stream=false ! capsfilter caps="video/x-h264,width=320,height=240,framerate=(fraction)25/1" ! mp4mux ! filesink location=d:\\test\\dump.mp4

Recording is not working, when I follow same steps in my application. I get NULL caps, when I make "gst_pad_get_negotiated_caps" call on rtph264depay source pad after linking rtph264depay and mp4mux elements.
The dot files generated using my application and gst-launch are also slightly different. The .dot files are also attached to this message.

Can someone please help me with this?

Please find the source file attached. Here are the steps I followed in the application.

main function

*         Creates rtspsrc, rtph264depay, mp4mux and elements

*         Sets location property of rtspsrc to "rtsp://streaming1.osu.edu/media2/ufsap/ufsap.mov"

*         Attaches a signal handler "pad_added_handler" to pad-added on rtspsrc

pad_added_handler function

*         Checks if it is application/x-rtp and H264 type

*         Sets byte-stream property on rtph264depay to false

*         Links new pad and sink pad on rtph264depay

*         Creates cap element with gst_caps_new_simple( "video/x-h264", "width", G_TYPE_INT, 320, "height", G_TYPE_INT, 240,"framerate", GST_TYPE_FRACTION, 25, 1, NULL)

*         Links rtph264depay and mp4mux using created caps

*         Links mp4mux and filesink



Regards,
Raja

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