audio.fx¶

The module moviepy.audio.fx regroups functions meant to be used with audio.fx(). Note that some of these functions such as multiply_volume (which multiplies the volume) can be applied directly to a video clip, at which case they will affect the audio clip attached to this video clip. Read the docs of the different functions to know when this is the case.

Because this module will be larger in the future, it allows two kinds of import. You can either import a single function like this:

from moviepy.audio.fx.multiply_volume import multiply_volume
newaudio = audioclip.fx(multiply_volume, 0.5)

Or import everything:

import moviepy.audio.fx.all as afx
newaudio = (audioclip.afx( vfx.normalize)
                     .afx( vfx.multiply_volume, 0.5)
                     .afx( vfx.audio_fadein, 1.0)
                     .afx( vfx.audio_fadeout, 1.0))

When you type

from moviepy import *

the module audio.fx is loaded as afx and you can use afx.multiply_volume, etc.

`audio_delay`	Repeats audio certain number of times at constant intervals multiplying their volume levels using a linear space in the range 1 to `decay` argument value.
`audio_fadein`	Return an audio (or video) clip that is first mute, then the sound arrives progressively over `duration` seconds.
`audio_fadeout`	Return a sound clip where the sound fades out progressively over `duration` seconds at the end of the clip.
`audio_normalize`	Return a clip whose volume is normalized to 0db.
`multiply_stereo_volume`	For a stereo audioclip, this function enables to change the volume of the left and right channel separately (with the factors left and right).
`multiply_volume`	Returns a clip with audio volume multiplied by the value factor.