AMP commands sent to trigger native 3Play shortcut commands of the same sort used by the user interface and Macro system. These shortcuts consist of two parts: a prefix that identifies the target 3Play output channel (A or b); and a suffix constituting the command to be executed. The AMP instruction may also include values, such as unique clip identifiers, similar to 3Play’s Clip IDs.
The supported prefixes are amp_vtr1 and amp_vtr2. These address 3Play’s Output A or B respectively. Supported suffixes are listed in the following table:
|_loop||bool||Changes looping playback status for the playout channel. If no value is specified then looping is toggled.|
|_play||void||Play at 1X speed|
|_query||void||Query returns a result (string) identifying the content currently on output and stores it for a subsequent _cue|
|_cue||String||Populates a special playlist tab named EXT VTR with a clip or playlist previously identified by a query. (If the value is void, performs a ReCue operation.)|
|_eject||void||Clears the current EXT VTR content|