Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Editing › How can I combine a video with Zoom H4n recorder audio? › I agree with Tunguy.
I agree with Tunguy. DreamSync is effective for these types of syncing debacles.
If you're doing a cover of a song, performing on stage, or doing an interview with two external devices, that's the go-to software.
Also, check out this article on how to best shoot videos with separate devices.