MPEG-4 absorbs many of the features of MPEG-1 and MPEG-2 and other related standards, adding new features such as (extended) VRML support for 3D rendering, object-oriented composite files (including audio, video and VRML objects), support for externally specified Digital Rights Management and various types of interactivity. AAC (Advanced Audio Coding) was standardized as an adjunct to MPEG-2 (as Part 7) before MPEG-4 was issued.
MPEG-4 has essential elements or features:
- MPEG4 SD DVB digital cable receiver.
- Timer: Wake timer / Sleep timer.
- Rich Graphics User Interface.
- Auto Channel Search.
- Auto Software Upgrade.
- Separate TV/Radio list.
- Finger printing support.
- Now / Next and 7 days Event Information support.
- Channel Sorting.
- Text based Channel Searching.
- Support of Genre wise channel listing.
- Logical Channel Numbering (LCN).
- Parental Lock.