Software for making music videos with focusrite 2i2
Perhaps if you listed what computer you have (PC/Mac etc) users here may be able to help with some suggestions.
Most video editing software will allow you to import audio that you have recorded into them, some will allow you to create audio and video in the same program, again, suggestions will depend on what platform you're working (PC/Mac).
As an aside, a slightly different route to take might be the Focusrite iTrack Pocket, which was designed in order to record video and audio together on an iPhone/iPad:
Really great if you're looking to put together Youtube performance videos or similar.
Hope this helps
Simon // Focusrite Technical Support