1、SMPTE RP*3b2 73 CBI 83571.103 00003l13 773 CMPTE RECOMMENDED PRACTICE Storage of Edit Decision Lists on 3-1/2 in Disks RP 162-1993 1 Scope This practice specifies the file and directory structure of 3-1/2 in floppy disks used for storage and inter- change of edit decision lists (EDLs). The specifica
2、tion is by reference to International Standards for 3-112 in disk formats, more commonly known as the “generic DOS format.” This practice does not specify the con- tents of an EDL. 2 Normative references The following standards contain provisions which, through reference in this text, constitute pro
3、visions of this practice. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this practice are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. ANSI X3
4、.4-1986 (R1992), Coded Character Set - 7-Bit American National Standard Code for Informa- tion Interchange ANSI/SMPTE 258M-1993, Television - Transfer of Edit Decision Lists ISO/IEC 646:1991 , Information Technology - IS0 7-Bit Coded Character Set for Information Inter- change IS0 8860-1 :1987, Info
5、rmation Processing - Data Interchange on 90 mm (3.5 in) Flexible Disk Cartridges Using Modified Frequency Modulation Recording at 7958 ftprad on 80 Tracks on Each Side - Part 1: Dimensional, Physical and Magnetic Characteristics Page 1 of 2 pages IS0 8860-2:1987, Information Processing - Data Interc
6、hange on 90 mm (3.5 in) Flexible Disk Cartridges Using Modified Frequency Modulation Recording at 7958 ftprad on 80 Tracks on Each Side - Part 2: Track Format IS0 9293:1987, Information Processing - Volume and File Structure of Flexible Disk Cartridges for Information Interchange 3 Definitions and g
7、lossary edit decision list (EDL): A list of audio/video content decisions which specify an audio/video product. Such a list is described by ANSVSMPTE 258M. element: One item of an EDL, distinguished from the surrounding elements by terminators. terminator: The two-character sequence, CR LF. 4 Storag
8、e of edit decision lists 4.1 Physical, electrical, and magnetic character- istics of the storage medium EDLs shall be stored on 3-1/2 in disks conforming to IS0 8860-1. 4.2 Track format of the storage medium EDLs shall be stored on disks formatted in accor- dance with IS0 8860-2. The formatted capac
9、ity shall be 720 kbytes. Copyright Q 1993 by the SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartxiale Ave., White Plains, NY 10607 (914) 761-1100 Approved July 1,1992 SMPTE RP+Lb2 93 RP 162-1993 4.3 Files and directory entries for files contalning edit decision lists Files containing
10、EDLs shall be recorded in accor- dance with IS0 9293. Directory entries for files containing EDLs shall be in accordance with IS0 9293. The following additional parameters apply: Files may be referenced from the root directory or from subdirectories. Other files and subdirectories may be recorded on
11、 the same disk. The name extension of files containing EDLs shall be ?EDL.? Annex A (informative) Formatted disk capacity The formatted capacity of disks adhering to this practice is currently specified to be 720 kbytes. It is intended to allow the use of disks of higher capacity (such as 1.44 Mbyte
12、s), 8357401 00003L4 BOT D The atbibutes and other defined fields of directory entries for files containing EDLs shall be in accor- dance with IS0 9293. 4.4 Data content of fles containing edit decision lkt8 The data content of files containing EDLs shall be characters encoded in accordance with ANSI
13、 X3.4 and ISO/IEC 646. The characters shall be interpreted in accordance with ANSVSMPTE 258M. The provisions of clause 4 of IS0 9293 shall not be applied to files containing ED&. NOTE - The characters in files containing EDLs will be grouped into elements by terminators as defined by ANSI/SMPTE 2SM, and that terminators are defined to be the two-character sequence, CR f. when such disks have been standardized internationally and are generally available in editing systems and EDL manipu- lation systems.
