Application and Research of Music Generation System Based on CVAE and Transformer-XL in Video Background Music

In the field of music generation using algorithms, processing time-series data has consistently been a complex task. To improve music generation with long sequences, insightful-unit-conditional variational autoencoder is proposed, which can enhance unit-conditional variational autoencoders with an improved attention mechanism. This model integrates TransformerXLs recurrent mechanism and relative positional encoding with measure-level granularity. For practical applications, a scheme is addressed that uses optical flow to extract motion features from video frames, quantifying motion rate and intensity. Furthermore, a dynamic correlation method is proposed to align video motion features with musical rhythm, guiding the model to generate melodies that match the videos rhythm.