Visual Circuits Mantis Media Gateway, Руководство пользователя

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External Control Commands
185
Multi-Track Jump Reverse (JR)
Jumps backward in the current MPEG file or playlist by the
amount specified in the <address> argument.
Syntax
<address>JR<CR>
Response
R<CR>
Remarks
❏
The JR command is similar to the search command accept
that the address argument is interpreted relative to the
current file and playlist position and the new position is
always before the current position.
❏
In the event that a JR command is received with an out of
range address value (i.e. – chapter number greater than the
current file in the playlist) the
JR command will not be
processed and the error code
E12
will be returned.
Examples
2@CH1JR
Jumps channel 2 to the head of the current file and then
transitions to still mode. The only condition under which
this command could generate an error code would be if
channel 2 was stopped or if no playlist was loaded.
2@CH3JR
Jumps channel 2 to the head of the second file before the
currently playing file and then transitions to still mode. If for
example file 4 is currently playing on channel 2, this
command would advance to the head of file 2. If the
currently playing file is less than the third file in the playlist
error code
E12
is returned and no change is made to the
state of channel 2.