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White Paper Blu-ray Disc Rewritable Format
Audio Visual Application Format
Specifications for BD-RE Version 2.1
March 2008
Table of Contents
1.Overview (3)
罐头的英文2.Recording of Digital Broadcasts (4)
2.1.Recording MPEG-2 transport stream of digital broadcast (4)
2.2.Support of Advanced video codec (MPEG-4 AVC) (11)
2.2.1.AVC Transcode mode (11)
2.2.2.HDMV compatible TS mode (11)
2.2.3.Interoperability between BDAV and BDMV (12)
3.Recording of Analog Broadcasts (13)
3.1.Self-Encoded Stream Format (SESF) (13)
3.2.Constrained Self-Encoded Stream Format (C-SESF) (14)
4.Direct Recording of DV Input (15)
4.1.Overview (15)
4.2.DV Stream Recording Format (15)
4.3.Random Access Method (17)
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4.4.Minimum Extent Size (17)
5.Ur Interface (18)
6.Editing (23)
6.1.Seamless Connection Editing (23)
6.2.Audio Dubbing (26)
2 © Blu-ray Disc Association, 2008.
The contents in this White Paper may be modified at the discretion of Format owners.
© Blu-ray Disc Association, 2008.
3 The contents in this White Paper may be modified at the discretion of Format owners.
BD-RE Part3 "Audio Visual Basic Specifications" Version 2.1
1. Overview
The Blu-ray Disc Rewritable (BD-RE) Application Format consists of: Part-2:File System Standard which defines the format for recording data to disc and the file management system; Part-3:Application Standard which defines the data structure of the file and the mechanism for stream management and ur prentation.
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BD-ROM
(Prerecorded)
File System BD-RE (Rewritable), BD-R (Write once)
BD-RE/BD-R
Part-1
BD-RE/BD-R Part-1BD-ROM
Part-1
BD-ROM Part-1BD-RE/BD-R
Part-2
BD-RE/BD-R Part-2BD-ROM
Part-2
BD-ROM Part-2BD-RE
Part-3 Ver.2.1
BD-RE Part-3 Ver.2.1BD-ROM
Part-3
BD-ROM Part-3Figure 3.1.1.1: Structure of the BD Standard
The BD standard consists of three physical standards: BD-Recordable (BD-RE), BD-Pre-recorded (BD-ROM) and BD-Write Once (BD-R). The BD-RE consists of a file system standard and an application standard. BD-RE consists of a file system standard and application standard.
一年级英语上册BD-RE Part-3 Ver.3.0
BD-RE Part-3 Ver.3.0
Since the commencement of BS digital broadcasting and digital terrestrial broadcasting in Japan, digital Hi-Vision programs can be enjoyed on veral channels and spread to homes in Japan. The BD-RE Part3 "Audio Visual Basic Specifications" Version 2.1 takes advantage of characteristic disc features such as ea-of-u and ea-of-editing and enables BS digital and digital terrestrial
aieebroadcasts to be recorded and stored while maintaining the original picture quality. Making full u of
the large capacity and high transfer rate of the BD-RE disc, the BD-RE Part3 Version 2.1 has been designed to achieve the following:
老鼠爱大米英文版• Recording of digital broadcasts including high-vision programmimg while maintaining the original picture quality—up to 2 hours on a single-layer disc and 4 hours on a dual-layer disc
• Supporting Advanced Video Coding (AVC) for trans-coding of video (MPEG-2 HD video to AVC HD video) and a long time recording mode of digital broadcasting
• Long time recording of analog broadcasts such as standard definition (SD) programs (With a picture quality that is equivalent to that of VHS standard mode, approximately 12 hours can be recorded on a single-layer disc or approximately 24 hours on a dual-layer disc.)
• Seamless, non-destructive editing which takes advantage of disc features
2. Recording of Digital Broadcasts
2.1. Recording MPEG-2 transport stream of digital broadcast
腾讯翻译君The main characteristic of the recording format under the BD-RE Application Format is its adoption of MPEG-2 TS (Transport Stream) for stream multiplexing.
DVD Video, on the other hand, employs MPEG-2 PS (Program Stream) as its multiplexing format. In comparison with MPEG-2 PS, MPEG-2 TS has a small packet size fixed at 188 bytes; it can multiplex multiple channels and EPG (Electronic Program Guide) information and is altogether more suited to broadcasting. The BD-RE Application Format enables transport streams of digital broadcasts to be recorded as they are without altering the format.
In current BS digital broadcasting systems, a single transponder is occupied by two or four transport streams and multiple programs (that is channels) are multiplexed in a single transport stream. A transport stream like this that is ud for broadcasting and contains multiple programs is called a full transport stream (Fig. 3.1.2.1). On the other hand, a partial transport stream is made from the full transport stream by extracting the video/audio/data components of a particular program and reconfiguring the PSI/SI (Program Specific Information/Service Information), information which descr
ibes the programs.
4 © Blu-ray Disc Association, 2008.
The contents in this White Paper may be modified at the discretion of Format owners.
If a digital broadcast recorder were to record a full transport stream in its original form, the
vampvideo/audio/data components of unwanted channels would also be recorded and u up the recording area. The conversion from full to partial transport stream is an important process for the recorder, as this process lowers the recording rate and allows the recording area to be ud efficiently (Fig. 3.1.2.2).
© Blu-ray Disc Association, 2008. 5 The contents in this White Paper may be modified at the discretion of Format owners.
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As shown in Fig. 3.1.2.3, in a partial transport stream which is reconstructed from the necessary packets extracted from the full transport stream, the time intervals between packets are not always the same. The packet intervals are determined by the buffer model and they must be obrved when the packets are input to the demultiplexer/decoder or el the buffer will overflow or underflow and data will not be decoded correctly. For this reason, a header is added to each TS packet during recording to indicate the time that the TS packet arrived at the T-STD (Transport stream-System Target Decoder). Under the BD-RE Application Format, a TS packet attached with its packet arrival time is called a source packet. During playback, the packet intervals before recording are reproduced accurately bad on the packet arrival times recorded in the source packet headers and the packets are then output to the T-STD or to outside the device (Fig. 3.1.2.4 and Fig. 3.1.2.5).
6 © Blu-ray Disc Association, 2008.
The contents in this White Paper may be modified at the discretion of Format owners.
