element not working with udpsrc

[Yogesh Tyagi]

Hi,

In my video sink element I wait for an event which is generated only when
some data flows through the video pad.This element works fine with file
based playback but is not working with udpsrc.

gst-launch udpsrc uri=udp://224.0.0.1:8202 !  demux name=d ! queue !
mpeg2_viddec ! queue max-size-buf
fers=3 ! vidsink d. ! queue ! audio_sink

I get following message on my console:

Pipeline is live and does not need PREROLL

What does this message mean? Is there any difference in state change/data
flow between udpsrc and filesrc element?

Thanks,
Yogesh
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