Channel Recorder supports the following sets of Multiport Video Computer Protocol (MVCP) commands:

Supported Global MVCP Commands

Command

Function

BYE

Closes the current connection.

MON

Initiates event monitoring mode.

PLS

Returns the supported media ports.

UADD

Creates a new unit.

ULS

Returns the existing VST units.

Supported Unit MVCP Commands

Command

Function

CCST

Gets the current status of the VST Clip Cache (the numbers displayed are bytes used/available).

CUER

Cues recording of the unit’s currently loaded clip.

LOAD

Loads a clip into a unit.

SET

Sets controls for the unit:
vtr.media.clip.format: Allowed values: [movie/stream/mxf] vtr.media.video.input.compression.type [mpg2]
vtr.media.mpeg.bit_rate: Sets the recording bitrate.
vtr.media.mpeg.imx: Enables IMX recording.
vtr.media.audio.input.channels: Sets the number of audio channels to record.
vtr.media.audio.input.sample.width: Sets audio bits per sample.
vtr.media.video.standard: The command is understood, however, as the video standard is determined by the input signal, it does not get changed.
vtr.media.input.trigger.duration.out: Sets the duration of the recording.
vtr.media.clip.start.mode: Allowed values: [time-of-day][vitc][ltc]

STOP

Stops playback or recording.

UCLS

Closes a unit.

UNLD

Unloads the unit’s currently loaded clip.

USTA

Returns the status of a unit.

Example MVCP Commands Sent by Viz Dart

UADD CS_ENCODER1 * SHAR dart
DISC global U1
UERR U1
SET U1 MED vtr.media.clip.format "movie/stream/mxf"
SET U1 MED vtr.media.video.input.compression.type "mpeg2-ibp-422p@hl"
SET U1 MED vtr.media.audio.input.channels 4
SET U1 MED vtr.media.audio.input.sample.width 16
LOAD U1 LUTAS_-_GLORY_62_-_SPORTV.mxf IN CRTE NOEX
SET U1 MED vtr.media.clip.start.mode "time-of-day"
SET U1 MED vtr.media.input.trigger.duration.out "04:00:00:00"
CUER U1
@14:50:00:00 REC U1
USTA U1
UCLS U1
UNLD U1


See Also