Kdenlive Compressor Expander

The tool models a dynamic range processor for video projects. It accepts input_level, threshold, ratio, knee style, and optional makeup, attack, and release, then returns predicted_output and gain_reduction. It supports compression and expansion modes and outputs values suitable for direct transcription into Kdenlive project settings.
The underlying calculations resemble standard signal processing: compression reduces gain for signals above threshold while expansion increases dynamic range for signals below threshold, with knee types controlling transition smoothness. It can simulate multiple input scenarios to compare outcomes and provide guidance on parameter offsets. Edge cases such as signals below threshold, excessive ratios, or missing fields are handled by guard rules and clear numeric defaults.
Designed for editors and audio professionals, the tool emphasizes transparent math and practical mappings to Kdenlive workflows, enabling faster decisions during scenes with variable dialogue, voiceover, and music beds.
Use cases include pre‑balancing a voice track, leveling music with dialogue, and preparing stems for broadcast or streaming delivery. Distinct value comes from being aligned with Kdenlive workflows and explicit output metrics that support project‑level parameter decisions.