Gstreamer pipeline not playing audio.

Nikhil Sharma nkhlsharma26 at
Tue Jun 16 01:56:16 PDT 2015

Hi Everyone

I am developing iOS video calling app using GStreamer. I am using a single
pipeline to send and receive video from a simulator to an Ubuntu machine
which is also using a single pipeline to send and receive video.
The pipelines are as follows:

On mac I am using :
gst_parse_launch("videotestsrc ! video/x-raw,width=640,height=480 ! x264enc
! h264parse ! rtph264pay ! udpsink port=5000 udpsrc
port=9078 caps=\"application/x-rtp,payload=96,encoding-name=H264\" ! queue
! rtph264depay ! h264parse ! decodebin ! autovideosink", &error);

On Ubuntu I am using :
gst-launch-1.0 udpsrc port=5000 caps=\"application/x-rtp, payload=96,
encoding-name=H264\" ! queue ! rtph264depay !  h264parse ! decodebin !
autovideosink v4l2src ! video/x-raw,width=640,height=480 ! x264enc !
h264parse ! queue ! rtph264pay ! udpsink port=9078.

These pipelines are working and the videos are running fine on both the PCs
but these videos are without audio. I could not figure out the reason.
Any help would be realy helpfull.

Thank you.
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