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Chapter 6 File Operations
101
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 writing from partial reading and writing.
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.
Write: Write data sequentially from the start to the end of
the file.
Partial write: Write data to a part of the file only.
Root directory
a) Only when “NAMING FORM” on the FILE NAMING page of the
OPERATION menu is set to “FREE”
b) Only files which can be written 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, files having a user-defined name in
the “C*” part can be handled.
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. 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 written 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 file 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.
Notes
• Directories cannot be created in the Clip directory.
• When the following operations, supported by version 1.5
and higher XDCAM devices, are carried out on a disc,
then it becomes impossible for version 1.4x and lower
XDCAM devices to record new clips or delete existing
File name Content Operations
Read/
Partial read
Write/
Partial write
Rename Create Delete
INDEX.XML Contains data for management of
the 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 material on the
disc, basic properties, related
information, and information about
access methods.
Ye s
No
No No No
Other files Files other than the above − No − No −
File name Content Operations
Read/
Partial read
Write/
Partial write
Rename Create Delete
C*.MXF
a)
Clip file created by recording (MXF
file)
*: 0001 to 4999
Ye s
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 −