Video Match video with camera animation

Hi,

I have a video rendered outside Unity, I have a 3D scene from this video. The idea is to have a stunning rendered video to run in the background and to attach a content generated in Unity to that video. I have exported camera with it's animation and the objects from the scene that should hold the generated content. The problem is, no matter what I do, it is never a perfect match. There is always a tiny bit of wiggling back and forth. The camera has same properties, animation imported as legacy(but tried as generic with avatar - same result) without keyframe compression (but tried with low values as well), video has constant framerate.

Is it possible to perfectly match video playback with 3d scene objects in Unity? If it is, where might be my problem? What should I look for?