Blender is a very powerful 3D software, but it also has internally a good Video Editor (VSE – Video Sequence Editor).
If you want to learn it, there is a good video tutorial playlist here:
The Blender VSE has a very power effect feature called Transform, you just select the your video strip and Add -> Effect Strip -> Transform. Then you can offset, zoom in/out, rotate, etc.
But it is also possible to use Keyframe with Transform, but it is a little bit tricker because it doesn’t follow the traditional Blender way. You need to edit the Transform strip Properties (press N case it is not visible) and edit the values, for each edited value press ENTER to confirm and then type I to Insert keyframe.
If it worked you will see the Property field changing its color to yellow: