seek in webrtcbin pipeline

[Jack]

Hello !

I am able to seek with seek_simple() in a simple pipeline like :

'filesrc location=17seconds48000D.wav ! wavparse ! audioconvert !
audioresample ! autoaudiosink'

But how I can seek in this pipeline using webrtcbin ? :

'webrtcbin name=sendrecv bundle-policy=max-bundle filesrc
location=17seconds48000D.wav ! wavparse ! opusenc ! rtpopuspay !
application/x-rtp,media=audio,encoding-name=OPUS,payload=96,clock-rate=48000
! sendrecv.

Using directly seek_simple() seems to not work.
Thanks !
++

Jack