If this is the same as the other tutorial linked to, sorry. But I’ve written this one for my AE class and my students really like it.
Creating A Simple Camera Shake Using Motion Tile and Expressions
1) Apply Motion Tile to your video that you want to have the camera shake on
2) Apply an Expression Slider (Effects>Expression Controls>Slider)
3) On the “Tile Center” parameter, create an expression. (Option click on the stopwatch)
3) Enter for the expression:
wiggle(5,effect(“Slider Control”)(“Slider”));
4) Keyframe the expression slider to create the camera shake. Usually, you’ll want an abrupt change, then it decays to zero.
5) Turn on Motion Blur for the composition and the layer.
6) Turn on “Mirror Edges” in the Motion Tile settings.
You might need to crop your original video if you’ve got visible horizontal blanking on the edges. just precomp it and scale it up.