Sponsors |
|
|
|
|
The BD-RE format’s compatibility with MPEG-2 PS
Shawn Dave
Tape4Backup
The stream recording format adopted by the BD-RE Application Format is based on MPEG-2 TS, the format used in digital broadcasts. Digital video recording devices such as DVD recorders use the MPEG-2 PS format, which is not directly compatible with the MPEG-2 TS format. In order to achieve a higher level of compatibility with existing digital video recording devices and to utilize existing video sources, the BD-RE Application Format defines a method for transcoding from a program stream to a transport stream and vice versa. The stream used for this conversion is called the constrained SESF. The Constrained SESF handles 11 TS packets as a single unit called a multiplexing unit. A multiplexing unit holds up to 2048 bytes of valid data and can be converted to a program stream and recorded in a 2048-byte sector.
An SESF capsule is a grouping of video and audio data that consist of one or more GOPs (Group of Pictures) and has been designed to enable playback and editing in units of SESF capsules. A Tip packet and PAT, PMT are inserted at the beginning of the SESF capsule. The Tip packet contains display information such as the aspect ratio of the video data in the stream, CGMS such as the copy control information, and coding information such as the video resolution, and so on. All of this information makes it possible to quickly identify the decoding method before decoding the data. During skip or high-speed playback, video data can be easily decoded by starting playback from the beginning of the SESF capsule. As a medium that records and plays all broadcasts, the BD-RE disc will enable a smooth transition from DVD and other existing recording media.
For further details and online order, please visit www.tape4backup.com
ShawnPaul
Tape4backup.com,
34972 Newark Blvd, # 501 , Newark CA 94560
Tel : 888-491-4949
Fax : 888-449-5050
Visits Us At: http://www. tape4backup.com
Email Us: links@tape4backup.com
Article submitted Friday, May 23, 2008
This article has been viewed 1 times.
Most Popular |
|
|
|