1、 Amendment 2:2013 to SMPTE ST 382:2007 SMPTE STANDARD Material Exchange Format Mapping AES3 and Broadcast Wave Audio into the MXF Generic Container Amendment 2 Page 1 of 2 pages Table of Contents 1 Scope 2 2 Add Constant Duration Audio Custom-Wrapping to Section 6.4 2 3 Add Essence Container Label f
2、or Constant Duration Audio Custom-Wrapping to Table 6 . 2 Foreword SMPTE (the Society of Motion Picture and Television Engineers) is an internationally-recognized standards developing organization. Headquartered and incorporated in the United States of America, SMPTE has members in over 80 countries
3、 on six continents. SMPTEs Engineering Documents, including Standards, Recommended Practices, and Engineering Guidelines, are prepared by SMPTEs Technology Committees. Participation in these Committees is open to all with a bona fide interest in their work. SMPTE cooperates closely with other standa
4、rds-developing organizations, including ISO, IEC and ITU. SMPTE Engineering Documents are drafted in accordance with the rules given in Part XIII of its Operating Manual. Amendment 2 to SMPTE ST 382:2007 was prepared by Technology Committee 31FS. Approved February 5, 2013 Copyright 2013 by THE SOCIE
5、TY OF MOTION PICTURE AND TELEVISION ENGINEERS 3 Barker Avenue, White Plains, NY 10601 (914) 761-1100 Amendment 2:2013 to SMPTE ST 382:2007 Page 2 of 2 pages 1 Scope Amend SMPTE ST 382:2007 to define constant duration audio Custom-Wrapping to distinguish this specific Custom-Wrapping from other Custo
6、m-Wrappings and to add Essence Container labels for signaling. 2 Add Constant Duration Audio Custom-Wrapping to Section 6.4 Append the following text to the end of Section 6.4 to define constant duration audio Custom-wrapping: Constant duration audio Custom-Wrapping specifies that all audio elements
7、 shall contain exactly the same number of audio samples, such as one or two seconds or constant number of video frames. The number of audio samples may be different in the first and last elements in a file. The constant duration custom-wrapped audio element shall use key values that indicate Custom-
8、Wrapping and the essence shall be signaled by the Essence Container Labels for the constant duration Custom-Wrapped elements listed in Table 6. 3 Add Essence Container Label for Constant Duration Audio Custom-Wrapping to Table 6 Add Universal Labels for the constant duration audio Custom-wrapping to
9、 Table 6: Table 6 Specification of the Essence Container Label Byte No. Description Value (hex) Meaning 1-12 Defined by Generic Container 13 Essence Container Kind 02hMXF Generic Container 14 Mapping Kind 06h AES-BWF as listed in the Labels Register defined by SMPTE ST 400 15 01h02h03h04h 08h 09h 0A
10、h 0Bh Wave Frame-Wrapped Element Wave Clip-Wrapped Element AES Frame-Wrapped Element AES Clip-Wrapped Element Wave Custom-Wrapped Element AES Custom-Wrapped Element Wave constant duration Custom-Wrapped Element AES constant duration Custom-Wrapped Element as listed in the Labels Register defined by SMPTE ST 400 16 Reserved 00h
