81
Overview
Chap
ter
5
F
ile Op
er
at
ions
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 sub item “NAMING FORM” on the SETUP
>OPERATIONAL FUNCTION >FILE NAMING page is set to “free”
b) Only files which can be written by XDCAM
• 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) The unit can handle files with user-defined names in the “C*” part.
b) Only files which are 2 seconds or longer in length, in a format matching
the format (system frequency) and recording format (MPEG HD/DVCAM
and number of audio channels) of the recorded sections of the disc, and
which can be overwritten by XDCAM.
c) Overwriting is not possible
d) Only when the Write Inhibit tab on the disc is set to enable recording and
“REC INH” is set to “OFF”. Any clip may be selected and deleted.
e) Only files which can be written by XDCAM
f) 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.
• Directories cannot be created in the Clip directory.
• When the following operations are carried out on a disc,
then it becomes impossible for version 1.4 and lower
XDCAM devices
1)
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.
Yes
No
No
No
No
ALIAS.XML
a)
Contains conversion tables for
assigning user-defined names
to clips and clip lists.
Yes
No
No
No
No
DISCMETA.XML
Contains metadata to indicate
the disc properties.
Yes
Yes
b)
No
No
No
MEDIAPRO.XML
Contains a list of material on
the disc, basic properties,
related information, and
information about access
methods.
Yes
No
No
No
No
Other files
Files other than the above
–
No
–
No
–
Notes
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 9999
Yes
Yes
b) c)
Yes
Yes
b)
Yes
d)
C
*
M01.XML
a)
Metadata file generated
automatically when C
*
.MXF file
is created.
*
: 0001 to 9999
Yes
Yes
e)
No
f)
No
g)
No
h)
Other files
Files other than the above
–
No
–
No
–
Notes
