1. Introduction
Soundtracks make a video more attractive. Addition of soundtracks to video clips is an essential part of the video editing process. A video clip can be made more attractive by adding a soundtrack considering its climax and timing. Furthermore, the beginning and end of the audio composition must coincide with those of the video clip. The results of the aforementioned synchronization of audio and visual elements are especially impressive for video editing. Here, we refer to music that is generated by replacing and concatenating the musical segments as a soundtrack.