video - Changing parameters in real time -

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i running pipeline gstreamer.

is there way change parameters of application/x-rtp in real time?

for example- "play-speed" field.

maybe events? couldn't understand how.

edit:

the main problem using seek event "pcapparse". when load mp4 file, seek event works great.

but when load pcap file, nothing happens on seek event.

those 2 pipelines:

data.pipeline = gst_parse_launch ("filesrc name=my_filesrc ! queue ! decodebin2 !  autovideosink", null);  data.pipeline = gst_parse_launch ("filesrc name=my_filesrc  ! queue  ! pcapparse  caps=\"application/x-rtp, payload=(int)96, media=(string)video, clock-rate=(int)90000,  encoding-name=(string)h264, **play-speed=2.0**\"  ! queue  ! gstrtpjitterbuffer latency=100  ! decodebin2 ! autovideosink", null);

i found can control video speed "play-speed" on "application/x-rtp". problem have set before hit play button- not in real time.

i'd if send seek, changes play-back speed pipeline, has "application/x-rtp" caps renegotiate them.


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