Notes on processing & generation of video / audio in Python

video_audio_notes.py

# Create a silent MP3 audio
# Requires ffmpeg library, install with: sudo apt install -y ffmpeg
from pydub import AudioSegment
silence = AudioSegment.silent(duration=5000)  # duration in milliseconds
silence.export("silence.mp3", format="mp3")

# Extract audio from video
import moviepy.editor
video = moviepy.editor.VideoFileClip("/path/to/video.mp4")
if video.audio is None:
  print("Video has no audio (silence)")
else:
  video.audio.write_audiofile("/path/to/audio.mp3")