How to make .anim out of .obj sequence

Unity Engine
1

I have sequence of 40 obj files. Every .obj have own mesh and uv, but material and texture is common for all of them. Is possible to keyframe actual mesh and next frame change it to anthoner in same way how i can put sprites to animations in 2D ? I tryed to keyframe mesh filter but for some resaon i can’t set any keyframes for mesh filter. Do i missed something ? It is possible ? If i can’t do it in unity what software allow me to make fbx out of obj sequence ?

[EDIT]
Yes, it realy must be .anim because i want use it in state machine

-Garrom

2

At end I created solution myself. Like true developer I solved it by script.

    public Mesh activeFrame;
    MeshFilter mf;
    void Start () {
        mf = GetComponent<MeshFilter>();
    }
   
    void Update () {
        mf.mesh = activeFrame;
    }

Then I simply animate activeFrame variable to change model.
This is horrible solution. If i have aroud 80 models animated like this my framefate drop to half but for now it is enough. I’ll have time for tweaking later.