Timeline and VideoPlayer sync issue

Hi
I tried a few different methods of synchronising unity animations and sounds with a video clip (a primitive example, someone knocks on a door in the video, Unity plays a sound at exactly this moment).
Timeline is great to sequence and trigger things at specific times and there is the Video Script Playable Track (part of the default playables package).
But whatever I tried in terms of videoplayer and playable director settings the timeline and video do not run in sync.
Any help would be very much appreciated.
V.