Question

1) There are many versions of MPEG. Mention those including their applications.

2) What is the difference between MPEG 2 and MPEG 4 and which one is better?

3) What do you about digital video broadcasting (DVB)?

4) Describe the data transmission using MPEG-2 and DVB.

Answer 1

1)

Standard: MPEG-MAR

Standard	Part #	Part name	Description
MPEG-MAR	1	Mixed and Augmented Reality Reference Model	A Mixed and Augmented Reality Reference Model developed jointly with SC 24/WG 9

Standard: MPEG-A

Standard	Part #	Part name	Description
MPEG-A	2	Music Player Application Format	Provides an “extended MP3 format” to enable augmented experience of sound resources
MPEG-A	3	Photo Player Application Format	Adds more information to the JPEG Format to enable augmented experience of photo resources
MPEG-A	4	Musical Slide Show Application Format	Specification of a slide show with musical accompaniment (a superset of the Music and Photo Player Application Formats)
MPEG-A	5	Media Streaming Application Format	Specifies a format to be played by a full-fledged media player for streaming governed content
MPEG-A	6	Professional Archival Application Format	Provides a standard packaging format for carriage of content, metadata and logical structure of stored content and related data protection, integrity, governance, and compression tools
MPEG-A	7	Open Access Application Format	Defines a format that allows for free access to content without making it public domain
MPEG-A	8	Portable Video Application Format	Defines a format for interactive use of video files on portable devices
MPEG-A	9	Digital Multimedia Broadcasting Application Format	Defines a standard file format that can be used to store and exchange DMB content between DMB terminals
MPEG-A	10	Surveillance Application Format	Provides a lightweight wrapper of video and audio coding, metadata and file format, suitable for video surveillance
MPEG-A	11	Stereoscopic Video Application Format	Enables more realistic 3D visual experiences (with or without special glasses)
MPEG-A	12	Interactive Music Application Format	Specifies an interactive music format with the possibility to access individual sound components
MPEG-A	13	Augmented Reality Application Format	Specification of a format to enable consumption of 2D/3D multimedia content
MPEG-A	16	Publish/Subscribe Application Format	A standard for the 4 payloads in PubSub messaging - for resource, subscription, publication and notification
MPEG-A	17	Multisensory Effects Application Format	Application Format enabling use of a plurality of senses
MPEG-A	18	Media Linking Application Format	A format connecting a specific spatio-temporal portion of a source content with a specific spatio-temporal portion of a destination content
MPEG-A	19	Common Media Application Format	A format encompassing file format, security, and video and audio profiles
MPEG-A	21	Visual Identity Application Format	To manage the visual identity contained in a visual file

2)

1. MPEG2 is the encoding method for DVDs, while MPEG4 is the encoding method of choice for portable devices and online use.

2. MPEG2 encoded video files are much bigger compared to MPEG4.

3. MPEG2 requires a lot more bandwidth for streaming compared to MPEG4.

4. MPEG2 produces the best video quality compared to MPEG4.

5. MPEG2’s compression is much simpler compared to MPEG4.

4)

DVB Transmission

DVB builds upon MPEG-2 and uses MPEG-2 Transmission. It also defines additional private sections and providing a definition of the physical medium (modulation, coding, etc) needed to carry the MPEG-2 Transport Streams.

Typical Streams carried in a DVB Terrestrial Transport Multiplex

Each MPEG-2 MPTS multiplex carries a number of streams which in combination deliver the required services.