[Python][Moviepy] 如何在音频末尾添加短暂的静音？

Question

I'd like to include a short silence duration at the end of an audio clip. I haven't found any specific functions in the Moviepy documentation, so I've resorted to creating a muted audio file of 500ms and concatenating it with the original audio file.

In some cases, this concatenation will introduce a noticeable glitch at the intersection, and I haven't figured out why. I also realized by importing the concatenated audiofile to Audacity that Moviepy actually creates two audio tracks when concatenating.

Do you know a better way to add silence to the end of the clip, or maybe the reason why this glitch appears sometimes (in my experience about 1 every 4 instances)?

Here's my code:

from moviepy.editor import *

temp_audio = "original audio dir"
silence = "silence audio dir"

audio1 = AudioFileClip(temp_audio)                      #original audio file
audio2 = AudioFileClip(silence)                         #silence audio file
final_audio = concatenate_audioclips([audio1,audio2])
final_audio.write_audiofile(output)

I am currently using Python 3.9.5 and Moviepy 1.0.3

Answer 1

may be fps=44100 will work. mp3 file's frequence

Answer 2

You can use the below solution for adding the silence at the end or start of audio:

from pydub import AudioSegment
orig_seg = AudioSegment.from_file('audio.wav')
silence_seg = AudioSegment.silent(duration=1000) # 1000 for 1 sec, 2000 for 2 secs

# for adding silence at the end of audio
combined_audio = orig_seg + silence_seg

# for adding silence at the start of audio
#combined_audio = silence_seg + orig_seg

combined_audio.export('new_audio.wav', format='wav')