how to create a link to video timecode ?

This is only going to work for SWF but....

If you insert the video as a Multi-Slide Synchronised Video then the timeline of the video will be locked to the timeline of the slide.  If you can get the frame number of a given point on the slide timeline, you can then use that frame number as a navigation target using Command Variables and Advanced Actions.

To capture the specific frame number, you'll need to set up a test button that will execute an Advanced Action that assigns a custom user variable with the value of cpInfoCurrentFrame when clicked.  Publish the project and click the button at the point in the video where you want to jump to.  Then you can set up another button and use this frame number as the one you need to assign to cpCmndGotoFrameAndResume to navigate to that frame.

It's a little tricky, but I think it could work.