In this paper, we introduce Foley Music, a system that can synthesize
plausible music for a silent video clip about people playing musical
instruments. We first identify two key intermediate representations for a
successful video to music generator: body keypoints from videos and MIDI events
from audio recordings. We then formulate music generation from videos as a
motion-to-MIDI translation problem. We present a Graph$-$Transformer framework
that can accurately predict MIDI event sequences in accordance with the body
movements. The MIDI event can then be converted to realistic music using an
off-the-shelf music synthesizer tool. We demonstrate the effectiveness of our
models on videos containing a variety of music performances. Experimental
results show that our model outperforms several existing systems in generating
music that is pleasant to listen to. More importantly, the MIDI representations
are fully interpretable and transparent, thus enabling us to perform music
editing flexibly. We encourage the readers to watch the demo video with audio
turned on to experience the results.

本文介绍了 Foley Music 系统，该系统能够为视频生成逼真的音乐。该系统将视频转换为基于运动的 MIDI 事件，然后利用 Graph-Transformer 框架精确地预测 MIDI 事件序列并转换为逼真的音乐，同时还具有完全可解释和透明的 MIDI 表示形式，可以实现灵活的音乐编辑。实验结果表明，该系统在生成宜人的音乐方面优于现有的几个系统。