May 6, 2007 · The document compares video compression standards MPEG-4 and H.264. It discusses key aspects of each including profiles, levels, uses and future applications. MPEG-4 introduced object-based coding while H.264 provides around 50% better compression than MPEG-4 at similar quality levels.

Oct 10, 2009 · The document provides an overview of the status of MPEG-4 developments and the AIC Initiative. It discusses the goals, history, and architecture of MPEG-4, which aims to code audio-visual objects and scenes to enable interactivity.

Sep 14, 2014 · Overview • MPEG-1 - Error free environments • MPEG-2 - Broadcast TV (SD and HD) • MPEG-4 - Object based coding • MPEG-7 - Multimedia description • MPEG-21 - Seven element initiative for multimedia deployment

Title: PowerPoint Presentation Created Date: 1/1/1601 12:00:00 AM Document presentation format: On-screen Show (4:3) Other titles: Arial Wingdings Arial Black Times New Roman Pixel 1_Pixel CS 414 – Multimedia Systems Design Lecture 12 – MPEG-4 (Part 7) Administrative Outline MPEG-4 Example MPEG-4 Example MPEG-4 Example Interactive Drama MPEG-4 Characteristics and Applications Media Objects ...

Jan 15, 2015 · It discusses the MPEG standards family and focuses on MPEG-4. MPEG-4 allows encoding of audio and video objects separately, placing them interactively within a 3D space. This enables interactivity, like changing viewpoints. Profiles allow …

Aug 21, 2014 · • Object-based video coding (MPEG-4) • A/V information: set of related stream objects • Individual objects are encoded as needed • Temporal and spatial composition to complex scenes • Integration of text, “natural” and synthetic A/V • A step towards semantic representation of A/V • Communication + Computing + Film (TV…)

Standardize algorithms for audiovisual coding in multimedia applications allowing for. Interactivity. High compression. Scalability of audio and video content. Support for natural and synthetic audio and video. The Idea. An audiovisual scene is a coded representation of audiovisual objects related in space and time.

• MPEG-4 departs from its predecessors in adopting a new object-based coding: – Offering higher compression ratio, also beneficial for dig- ital video composition, manipulation, indexing, and re- trieval. – Figure 12.1 illustrates how MPEG-4 videos can be com- posed and manipulated by simple operations on the visual objects.

MPEG-4 File Format (MP4) Designed to contain the media information of an MPEG-4 presentation in a flexible extensible format that facilitates interchange, management, editing and presentation. The design is based on QuickTime® format.

It represents arbitrarily shaped video objects where each object can be encoded with different parameters, and at different qualities. The shape of a video object can be represented in MPEG-4 by a binary or a gray-level (alpha) plane. The texture is coded separately from its shape.