The Introduction and comparison of MPEG 1, MPEG 2, MPEG 4 and MPEG 4 AVC Video Encoding Standard
What is MPEG? Here I will give you the answer! As the existing hardware technology and data processing ability of the computer is the least satisfactory, nowadays people have to reduce the original data of multimedia video to cater to the computer (the purpose of multimedia video compression is that as a prerequisite, to ensure no data loss, and to reduce the amount of data by transforming, quantitating and Encodingthe original signal data with a certain mathematical algorithm or operation method.); and this process is multimedia video compression and MPEG is one of multimedia video compression standards.
The Audio Encoding:
MPEG Audio Layer1/2: MPEG Audio Layer1/2 is MP1, MP2. It is an earlier audio encodingformat and mainly used in VCD, DVD and SVCD.
MPEG Audio Layer 3: MPEG Audio Layer 3 is the famous MP3, which has become the dominating audio format in the network.
MPEG-4 AAC: AAC has been the standard of audio encoding.
MP3 PRO: Add SBR technology into MP3 is MP3 PRO but MP3 PRO is not widely used as MP3 by people.
The Video Encoding:
MPEG-1. MPEG-1 is an earlier video encoding standard, the quality of video is low and it is mainly used in CD-ROM. And we are all familiar with the Video CD, its video is encoded by MPEG-1.
MPEG-2. MPEG-2 is a video encoding standard that developed from MPEG-1, its quality of video is far better than MPEG-1. MPEG-2 is mainly used in DVD-Video and it is the specified code for DVD. MPEG-2 not only used in DVD, but also used in HD TV, and its resolution up to 1920x1080. In addition, as the popularity of MPEG-2, the MPEG-3 which is originally prepared for HD TV was abandoned at last.
MPEG-4.In order to meet the needs of network transmission, the developers develops MPEG-4 as the traditional MPEG-1/2 is poor for the network transmission. MPEG-4 use a series of new technology to meet the needs of transmitting the high quality video in a slow broadband connection.
MPEG-4 AVC. MPEG-4 AVC and MPEG-4 are two different video Encoding standard. No matter low bit rate video or high bit rate video, MPEG-4 AVC always better than MPEG-4 and is likely to overtake MPEG-4. Even the next generation of HD-DVD and Blue-ray Disc all have accepted MPEG-4 AVC.