I am trying to synchronize camera movements (based on tracking data from SynthEyes) with a MovieTexture playing in Unity. In order to look up the camera position I need the current frame number of a playing MovieTexture.
It's not possible at all currently. You'd be best keeping your own timer running to see what frame it should be on.
ou should probably add a feature request to http://feedback.unity3d.com if you want it added at any point