An introduction about MPEG Format/Standards
MPEG standards, set by Moving Picture Experts Group, refer to a family of standards used for coding audio-visual information (e.g., movies, video, music) in a digital compressed format. MPEG files are much smaller than other video and audio coding formats for the same quality, which is the biggest advantage of MPEG format. It uses very sophisticated compression techniques.
The major MPEG standards include MPEG-1, MPEG-2, MPEG-3, MPEG-4, MPEG-7, MPEG-21, MPEG-A, MPEG-B, MPEG-C, MPEG-D, MPEG-E, MPEG-DASH, MPEG-U, MPEG-V, MPEG-H, MPEG-M. Here introduce some popular MPEG standards and differences between them:
MPEG-1: released in 1993, is the first MPEG compression standard for video and audio, "Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mbit/s (ISO/IEC 11172)." MPEG-1 was designed to compress VHS-quality raw digital video and CD audio down to 1.5 Mbit/s, making video CDs, digital cable/satelite TV and digital audio broadcasting (DAB) possible. MPEG-1 has become the most widely compatible lossy audio/video format in the world, the best-known part is the MP3 audio format.
MPEG-2: "Generic coding of moving pictures and associated audio information (ISO/IEC 13818). " MPEG-2 was chosen as the compression scheme for over-the-air digital television ATSC, DVB and ISDB, digital satellite TV services like Dish Network, digital cable television signals, SVCD and DVD Video.
MPEG-3: Was intended for HDTV but was abandoned and was merged with MPEG-2 for HDTV. MPEG-3 is not MP3, which is MPEG-1 Audio Layer III.
MPEG-4: "Coding of audio-visual objects. (ISO/IEC 14496)" It is a graphics and video compression algorithm standard that is based on MPEG-1 and MPEG-2 and Apple QuickTime technology. It adds new features such as VRML support for 3D rendering, object-oriented composite files, support for externally specified Digital Rights Management and various types of interactivity. The key parts of MPEG-4:
· MPEG-4 Part 2 (or Advanced Simple Profile): used by codecs such as DivX, Xvid, Nero Digital and 3ivx and by QuickTime 6.
· MPEG-4 Part 10 (or MPEG-4 AVC or H.264or Advanced Video Coding): used by the x264 encoder, by Nero Digital AVC, by QuickTime 7, and by high-definition video media like HD DVD and Blu-ray Discs, along with VC-1 and MPEG-2.
· MPEG-4 Part 14 (or MP4 file format): used to store video and audio, and other data such as subtitles and still images, in the extension .mp4.
What's the Difference between MPEG-2 and VOB File in DVD?
A DVD folder(VIDEO_TS) consists of vob, ifo and bup files. VOB is a container format - the MPEG-2 video is contained inside the VOB file.
MPEG-2 file is a video file. VOB is based on MPEG-2 format. You can extract the underlying MPEG-2 files from VOB, or you can change the extension from .vob to .mpg.
A VOB(Video Object) fileis a container file. It may contain video stream(mpeg-2), audio stream, subtitles, DVD menus and navigation contents multiplexed together into a stream form. Files in VOB format may be encrypted.
How to play MPEG-2 or VOB files with iDeer Blu-ray Player?
iDeer Blu-ray Player can not only play Blu-ray, but also other media formats, and it is free when playing DVD and other media formats.
1. Free download iDeer Blu-ray Player and install it on your computer.
2. Run the program. Click the icon in lower right corner and select Open File to open the MPEG-2 or VOB file. Then you can play the video on your computer.
If you want to play a Blu-ray file, you can refer to page to enter the section you need.