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

Introduction to QT Phonon


In earlier chapters on audio and video processing, we extensively used GStreamer multimedia framework. Phonon is a multimedia framework used by QT to provide audio/video playback. With the GStreamer API knowledge under our belt, it should be very easy to grasp the fundamental concepts behind the Phonon multimedia framework.

Main components

Let's briefly discuss some of the fundamental components and concepts behind the Phonon architecture.

Media graph

This is analogous to a GStreamer pipeline. The media graph specifies various nodes (analogous to GStreamer elements) for processing the media stream. For example, the sink node gives the media data as output. To begin streaming the media data within the Graph, we call the play()method of the MediaObject module.

Media object

This object is used for the media playback. It is analogous to the portion of a GStreamer pipeline that handles the input media data. The instance of MediaObject class is used for this purpose. It provides...