I'm trying to reproduce the following command which works fine: ffmpeg -i {input} -filter_complex 'compand,showwavespic=s=640x640' -frames:v 1 {output} I get a ffmpeg ...

Generates SVG waveform images for a given MP3 file by converting it to WAV and processing amplitude points and plotting them on a GD canvas. This code was adapted by Andrew Freiday. The initial form, ...