An animatic is similar to a storyboard, however, it is presented in video form. This means that the key frames that have been drawn into the storyboard are separated from eachother and placed into a sequenced video. When looking at an animatic for a music video, this sequence is presented with the song in the background. This enables the creator of the animatic to cut the clips together to match the song, giving the viewer a more accurate representation of what the final music video will look like.
Below are a few examples of music video animatics:
