How to send seek event once pipeline is running

[stic at free.fr]

Hi,

I would like to send a seek event to the pipeline immediately after is it running or ready to run.
I didn't find the best way or moment to send it, it is either too late (pipeline has already started running before I can send the event) or too early (pipeline is not in a state where I can send the seek event).

So could someone tell me how to catch the moment where I can send the seek event the earlier to the pipeline ?

Thanks,
Stic