Retrieving Timestamps on the Receiving Side with RTPJPEGDEPAY

I am running the following GStreamer pipeline:

/tmp/usr/bin/gst-launch-1.0 v4l2src device=/dev/video3 ! image/jpeg, width=1920, height=1080, framerate=60/1 ! rtpjpegpay mtu=65500 ! udpsink host=192.168.1.100 port=5005 sync=false -v

I would like to retrieve the timestamp on the receiving side. My understanding is that enabling do-timestamp=true will generate frame timestamps, but within rtpjpegpay, only PTS (Presentation Timestamp) and DTS (Decoding Timestamp) are retained. This means I would only be able to determine an offset, rather than the full absolute timestamp.

Is my understanding correct? Additionally, is there a way to retrieve the full timestamp on the receiving side using rtpjpegdepay?