Vdcp Commands Supported By Ovs - Avid Technology FastServe Live Edit Setup Manual

VDCP Commands Supported by OVS

The following commands are implemented in Avid FastServe | Live Edit or FastServe | Ingest server
for the VDCP protocl.
Supported Optional VDCP Commands
Command
1x.00 - STOP
1x.01 - PLAY
1x.02 - RECORD
1x.04 - STILL/PAUSE
1x.06 - CONTINUE
2x.21 - CLOSE PORT
2x.22 - SELECT PORT
2x.23 - RECORD INIT
2x.24 - PLAY CUE
2x.25 - CUE WITH DATA
2x.26 - DELETE ID
Description
The STOP command will return the selected port to the IDLE state.
The STOP command can be issued to a port in any state. When in IDLE, the port will
output black. Any material that is playing out, CUED or cueing is aborted. No action will
result if the STOP command is received when no material is PLAYing. If the port was in
the RECORD state, then the system will stop recording at the next REF interval. A
partial recording will have occurred and the internal database for the length of the
material will be updated to reflect this reduced length. The part of the material received
is kept stored on the disk and is available for play.
The PLAY command causes the specified ID to play out.
Issuing the RECORD command will cause the system to begin recording on the next
REF interval. It will also clear the CUE/INIT and cueing bits in the port status.
The STILL command causes the currently playing ID to pause. The last frame played
prior to receiving the STILL command will continue being displayed. The output port
must be in the PLAY, or in the CUED state.
The CONTINUE command causes the ID currently in the STILL state to continue
playing. The output port must be in a PLAY, CUED, or STILL state or an error will be
logged.
The CLOSE command is used to break communication to a Signal (audio/video) Port
connection established by a preceding OPEN command. PORT is a number representing
the available video ports as in OPEN. SEND DATA 1 contains an 8 bit signed number
representing PORT.
The SELECT PORT command selects a Signal Port from the signal ports that are
currently opened by this communications port. All subsequent commands arriving at the
associated RS-422 port will be routed to the assigned Signal Port until another SELECT
PORT command is received. Only one signal port may be selected by a single
communications port at any time. A CLOSE, or SELECT PORT command following,
breaks or closes this selection. PORT is a number representing the available I/O signal
ports. SEND DATA 1 contains an 8 bit signed number representing PORT.
Issuing the RECORD INIT command with a Video Input Port selected causes the system
to prepare for recording. The RECORD INIT command consists of the command itself
followed by an ID, followed by a LENGTH. The ID is an 8 character identifier. The
LENGTH is the duration of record in FRAMES SECONDS MINUTES HOURS (BCD)
format. The RECORD INIT command may be issued when the signal port is recording,
if the disk system supports back to back records. In this case every frame of video is
recorded.
The PLAY CUE command causes the selected port to prepare to play the specified ID.
This command is similar to the CUE command but allows play out of just a part of the
ID.
The ID DELETE command is used to remove material from the disk system.
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