hey folks

i made a small open source tool called wagen (wavegen) that turns audio files into waveform videos.

repo: GitHub - ledongthuc/wagen: Turns your audio files into waveform videos · GitHub

mp3/flac/wav/etc → waveform animation → mp4 video

you throw in a song, it renders those moving audio bars/waves (think old winamp visualizers), then outputs an mp4 with the original audio attached.

example:

cargo run --release -- -i song.mp3

under the hood it:

• decodes audio using symphonia
• renders raw RGB frames in memory
• pipes frames directly to ffmpeg
• outputs h264/aac mp4

no temp pngs, no intermediate files, just streaming frames into ffmpeg.

you can tweak FPS, resolution, bar width, waveform window, etc.

made it mostly because i wanted a simple CLI tool for generating music visualizer videos without opening a video editor.

would love feedback, ideas, bug reports, or feature suggestions

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