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Chapter 6 File Operations
57
6-1 Overview
6-1-2 File Operation Restrictions
This section explains which operations are possible on
files stored in each directory.
When required, the following operation tables distinguish
reading and overwriting from partial reading and
overwriting.
Read: Read data sequentially from the start to the end of
the file.
Partial read: Read only a part of the data in the file.
Overwrite: Overwrite data sequentially from the start to
the end of the file.
Partial overwrite: Overwrite data to a part of the file only.
Root directory
a) Only when sub item “NAMING FORM” of basic menu item 036 is set to
“free”
b) Only files which can be overwritten by XDCAM
Notes
• Directories cannot be created in the root directory.
• The directories in the root directory (Clip, Edit, Sub, and
General) cannot be deleted or renamed.
Clip directory
a) With firmware version 1.5 and higher, the unit can handle files with user-
defined names in the “C*” part.
b)Possible with firmware version 1.5 and higher.
c) Only files which are 2 seconds or longer in length, in a format matching
the line mode format (525/625) and recording format (IMX50/IMX40/
IMX30/DVCAM and number of audio channels) of the recorded sections
of the disc, and which can be overwritten by XDCAM.
d) Only when the write inhibit tab on the disc is set to enable recording, and
when extended menu item 310 “REC INHIBIT” is set to “off.” With
firmware version 1.4x and lower, only the most recently recorded clip may
be deleted. With firmware version 1.5 and higher, any clip may be selected
and deleted.
e) Only files which can be overwritten by XDCAM
f) With firmware version 1.5 and higher, when the “C*” part of a C*.MXF
file name is changed, a C*M01.XML with the same name in the “C*” part
is also changed automatically.
g) When a C*.MXF file is created, a C*M01.XML file with the same name
in the “C*” part is created automatically.
h) When a C*.MXF file is deleted, the C*M01.XML file with the same name
in the “C*” part is also deleted automatically.
File name Content Operations
Read/
Partial read
Overwrite/
Partial
overwrite
Rename Create Delete
INDEX.XML Contains data for management of
the audio/video material on the
disc.
YesNoNoNoNo
ALIAS.XML
a)
Contains conversion tables for
assigning user-defined names to
clips and clip lists.
YesNoNoNoNo
DISCMETA.XML Contains metadata to indicate the
disc properties.
Ye s
Ye s
b)
No No No
MEDIAPRO.XML Contains a list of audio/video
material on the disc, basic
properties, related information, and
information about access methods.
YesNoNoNoNo
Other files Files other than the above − No − No −
File name Content Operations
Read/
Partial read
Overwrite/
Partial
overwrite
Rename Create Delete
C*.MXF
a)
Clip file created by recording (MXF
file)
*: 0001 to 4999
Yes No No
b)
Ye s
c)
Ye s
d)
C*M01.XML
a)
Metadata file generated
automatically when C*.MXF file is
created.
*: 0001 to 4999
Ye s Ye s
e)
No
f)
No
g)
No
h)
Other files Files other than the above − No − No −