How to modify the 3gp streaming filter to read Only rtp data?

How to modify the 3gp streaming filter to read Only rtp data?
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( 3gp streaming stack it will receives the rtsp and rtp data)

Solution:Quick and dirty way to do this:
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Use Some SDP file to create the dummy audio and video output pin. ( We can create it with rtsp:// URL itself);
Hard code the media type, File duration (instead of the file duration configure duration as much as we need to receive data for RTP),config data in a filter .