MPEG Standards
MPEG standards are a set of international standards
developed for compressing and encoding audio and video
data efficiently for storage and transmission.
1. Introduction
MPEG stands for Moving Picture Experts Group. These standards reduce the size of audio-video files while maintaining acceptable quality.
- Used for digital video compression
- Widely adopted worldwide
2. Need for MPEG
Raw video requires huge storage and bandwidth. MPEG standards help compress video efficiently.
- Reduces storage space
- Enables video streaming
3. MPEG-1
MPEG-1 was designed for storing and playing video on CD-ROMs.
- Supports VCD quality video
- Introduced MP3 audio
4. MPEG-2
MPEG-2 is used for digital television and DVD video.
- Higher quality than MPEG-1
- Supports interlaced video
5. MPEG-4
MPEG-4 provides high compression efficiency and supports interactive multimedia.
- Used for streaming and mobile video
- Includes AAC audio
6. MPEG-7
MPEG-7 is used for describing multimedia content rather than compressing it.
- Metadata standard
- Supports content search
7. MPEG-21
MPEG-21 focuses on multimedia framework and content delivery.
- Digital item management
- Rights and protection
8. Comparison of MPEG Standards
Standard Usage ----------- -------------------------------- MPEG-1 VCD, MP3 MPEG-2 DVD, Digital TV MPEG-4 Streaming, Mobile video MPEG-7 Multimedia metadata MPEG-21 Multimedia framework
9. Advantages
- Efficient compression
- High compatibility
- Supports multimedia delivery
10. Applications
- Video streaming platforms
- DVD and Blu-ray
- Broadcast television
- Mobile multimedia
Practice Questions
- What does MPEG stand for?
- Why are MPEG standards required?
- Explain MPEG-1 and MPEG-2.
- What is MPEG-4 used for?
- Differentiate MPEG-4 and MPEG-7.
Practice Task
Explain with examples:
✔ MPEG compression usage
✔ MPEG standards comparison
✔ MPEG in streaming services