![]() Most of the video compression schemes standardize the bitstream (and thus the decoder) leaving the encoder design to the individual implementations. Other profiles include the Advanced Coding Efficiency Profile (ACEP or ACE Profile), the Advanced Real Time Simple Profile (ARTSP or ARTS Profile), the Core Profile (CP), the Main Profile (MP), and the Simple Studio Profile (SStP or SSt Profile). The most commonly deployed profiles are the Advanced Simple Profile (ASP or AS Profile) and the Simple Profile (SP), which is a subset of the ASP. MPEG-4 Part 2 contains approximately 21 profiles. To address various applications ranging from low-quality, low-resolution surveillance cameras to high definition TV broadcasting and DVDs, many video standards group features into profiles and levels. JSTOR ( May 2023) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources in this section. This section needs additional citations for verification. See Patent holders below for a full list of patent holders.Įditions MPEG-4 Visual editions Edition ![]() The majority of patents used for the MPEG-4 Visual format were from three Japanese companies: Mitsubishi Electric (255 patents), Hitachi (206 patents), and Panasonic (200 patents). The standard was developed using patents from over a dozen organizations, listed by MPEG LA in a patent pool. The specification was authored by Iranian- Swiss engineer Touradj Ebrahimi (later the president of JPEG) and Dutch engineer Caspar Horne. The MPEG-4 Visual format was developed by the Moving Picture Experts Group (MPEG) committee. The first MPEG-4 Video Verification Model (simulation and test model) used ITU-T H.263 coding tools together with shape coding. MPEG-4 Part 2 is partially based on ITU-T H.263. (MPEG-4 Video decoder is natively capable of decoding a basic form of H.263.) In MPEG-4 Visual, there are two types of video object layers: the video object layer that provides full MPEG-4 functionality, and a reduced functionality video object layer, the video object layer with short headers (which provides bitstream compatibility with base-line H.263). MPEG-4 Part 2 is H.263 compatible in the sense that a basic H.263 bitstream is correctly decoded by an MPEG-4 Video decoder. MPEG-4 Part 10 is commonly referred to as H.264 or AVC, and was jointly developed by ITU-T and MPEG. MPEG-4 Part 10 defines a different format from MPEG-4 Part 2. Several popular codecs including DivX, Xvid, and Nero Digital implement this standard. It uses block-wise motion compensation and a discrete cosine transform (DCT), similar to previous standards such as MPEG-1 Part 2 and H.262/MPEG-2 Part 2. It belongs to the MPEG-4 ISO/IEC standards. MPEG-4 Part 2, MPEG-4 Visual (formally ISO/ IEC 14496-2 ) is a video compression format developed by the Moving Picture Experts Group (MPEG).
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