moviepy.audio.fx.all.multiply_volume¶

moviepy.audio.fx.all.multiply_volume(clip, factor, start_time=None, end_time=None)[source]¶

Returns a clip with audio volume multiplied by the value factor. Can be applied to both audio and video clips.

Parameters:

factorfloat: Volume multiplication factor.
start_timefloat, optional: Time from the beginning of the clip until the volume transformation begins to take effect, in seconds. By default at the beginning.
end_timefloat, optional: Time from the beginning of the clip until the volume transformation ends to take effect, in seconds. By default at the end.

Examples

>>> from moviepy import AudioFileClip
>>>
>>> music = AudioFileClip('music.ogg')
>>> doubled_audio_clip = clip.multiply_volume(2)  # doubles audio volume
>>> half_audio_clip = clip.multiply_volume(0.5)  # half audio
>>>
>>> # silenced clip during one second at third
>>> silenced_clip = clip.multiply_volume(0, start_time=2, end_time=3)