AudioVisualizer

This script generates a video with an audio visualizer from an audio file and an optional background image.

Features

• Generates waveform or spectrum visualizations.
• Customizable colors, dimensions, FPS, and other visual parameters.

Prerequisites

Make sure you have Python installed. You will also need FFmpeg for moviepy to function correctly.

Installation

1. Clone the repository or download the visualizer.py script.
2. Install the required Python packages:

   pip install librosa numpy opencv-python tqdm moviepy==1.0.3

Configuration

The script uses a CONFIG dictionary within visualizer.py to set various parameters:

• audio_file: Path to the input audio file (e.g., "input.mp3").
• output_video: Path for the generated video file (e.g., "output.mp4").
• background_image_path: Path to an image to use as the background (e.g., "background.jpg"). If not found, a solid color background is used.
• fps: Frames per second for the output video.
• video_width, video_height: Dimensions of the output video.
• visualizer: Contains settings for the visualizer type (waveform or spectrum) and its specific parameters.
  • waveform: Settings for line color, thickness, height, style, and smoothing.
  • spectrum: Settings for number of bins, colormap, bar width, smoothing, frequency range, scaling, and gravity effect.
• ffmpeg_params: Parameters for FFmpeg, including codecs, preset, threads, and custom arguments like CRF and audio bitrate.

Modify the CONFIG dictionary in visualizer.py to suit your needs.

Usage

1. Ensure your input audio file (e.g., input.mp3) and optional background image (e.g., background.jpg) are in the same directory as the script, or update the paths in the CONFIG section of visualizer.py.
2. Run the script from your terminal:

   python visualizer.py

3. The output video (e.g., output.mp4) will be generated in the same directory.

Files in the Project

• visualizer.py: The main Python script for generating the audio visualization.
• input.mp3: (Example) Your input audio file.
• background.jpg: (Example) Your optional background image.
• output.mp4: (Example) The generated video output.
• README.md: This file.