Kdenlive/Manual/Effects/Misc/Audio Wave

Audio Wave

This is the MLT filter audiowave

Display the audio waveform instead of the video. Author Dan Dennedy.

This does not work alone on audio-only clips. It must have video to overwrite. A workaround is to apply this to a multi-track with a color generator.

Overlaying the Wave

This effect replaces the video. If you want the effect overlaying the video you can do something like shown below.

Duplicate the video track on a track below the one with the Audio wave on it.

Add a composite transition.

On the top video track (the one with the audio wave effect) add a Color Selection effect.

Make the color you are selecting black and check the invert selection.