User`s manual

Alcorn McBride Digital Video Machine DVM-7400 User’s Manual Rev 1.5
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Required File Name Formats
File names are represented in simple DOS 8.3 format. In other words, an eight
character name, a period, and then a three-character extension. There are two ways
to name your video files.
VID00003.MPG is an
example of a
numbered file name.
With this naming
convention, you can
use the parallel inputs
to access files.
The first method consists of a name made up of eight characters specifying the type
(VID for video file, PLY for Playlist), and the number of the file (5 digits from 00000 to
00511).
The three-character extension is used to tell the Digital Video Machine the data
format of the file, either MPG or LST representing a video file or a playlist.
To avoid confusion,
don’t duplicate file
numbers.
File numbers are used to identify which file is to be played in response to Select File
serial commands or rear panel file selection parallel inputs. File numbers contained on
a drive should be unique, regardless of the file type. In other words, you shouldn’t
have PLY00002.LST and VID00002.MPG on the same drive. The two files should
have different numbers. If more than one file has the same number, the first file found
in the directory will be used.
Autoexec files are
invaluable in stand-
alone applications.
File #0 is an autoexec file. A file numbered 0 is automatically executed on power up.
For example, Playlist PLY00000.LST will start as soon as the Digital Video Machine is
turned on. If the loop input is strapped on, or if the Playlist is designed to repeat,
playback will continue indefinitely.
CLIP.MPG is an
example of a named
file name. With this
method, only serial or
Ethernet. control can
be used to trigger the
file.
The second file naming method is simply a name up to eight characters long, with a
three-character MPG, LST, SCL , or GPS extension.
Any type of file may
be stored in the Digital
Video Machine, but
only those listed in the
table may be played.
Although any file name may be copied to the Digital Video Machine’s media, only
MPG, LST (playlist, SCL (for schedules) files, or GPS (for GPS playlists) are actually
used by the DVM. Other file types are essentially ignored. This allows archiving of
ANY information on the drive: CAD drawings, spreadsheets, documentation, etc.
Some example file names:
File Name Description
VID00000.MPG Track number 0 MPG Video file
PLY00002.LST Playlist Number 2
ALCORN.MPG File Name “ALCORN.MPG” Video file
SHOW1.LST Playlist Name “SHOW1”
SCHEDULE.SCL The file used for real-time clock scheduled play.
PLY00000.GPS GPS Playlist Number 0 (autoexec).