URL parameters rtp-sequence and rtp-timestamp are not supported

For the rtp URL, additional parameters "rtp-sequence" and "rtp-timestamp" to enable the carry over of sequence number and timestamp are not working. Seen with v0.2.6.

changed the description

mentioned in commit 10231fc9

added Enhancement label

changed milestone to %0.2.9

changed milestone to %0.2.10

changed milestone to %0.2.11