Book Image

Python Multimedia

By : Ninad Sathaye
Book Image

Python Multimedia

By: Ninad Sathaye

Overview of this book

Multimedia applications are used by a range of industries to enhance the visual appeal of a product. This book will teach the reader how to perform multimedia processing using Python. This step-by-step guide gives you hands-on experience for developing exciting multimedia applications using Python. This book will help you to build applications for processing images, creating 2D animations and processing audio and video. Writing applications that work with images, videos, and other sensory effects is great. Not every application gets to make full use of audio/visual effects, but a certain amount of multimedia makes any application a lot more appealing. There are numerous multimedia libraries for which Python bindings are available. These libraries enable working with different kinds of media, such as images, audio, video, games, and so on. This book introduces the reader to the most widely used open source libraries through several exciting, real world projects. Popular multimedia frameworks and libraries such as GStreamer,Pyglet, QT Phonon, and Python Imaging library are used to develop various multimedia applications.
Table of Contents (13 chapters)
Python Multimedia Beginner's Guide
Credits
About the Author
About the Reviewers
Preface

Time for action – audio visualizer


The visualization effect can be added to the streaming audio using different techniques. We will use the simplest approach of all to develop a Music Visualizer utility.

Here, we will be using the playbin plugin of GStreamer. Recall that the playbin was first used in the Playing an audio from a Website section of the Working with Audios chapter. This plugin provides a higher level audio /video player and it should be available in the default GStreamer installation.

  1. Download the file MusicVisualizer.py from the Packt website. This is a small program. The class methods are represented below. Look at the code from this file for more details.

    class AudioPlayer:
        def __init__(self):
            pass
        def connectSignals(self):
            pass
        def play(self):
            pass
        def message_handler(self, bus, message):
            pass

    Most of the code is identical to the one illustrated in the Playing audio from a website section of the previous chapter. The only difference...