The alarm recording search in <findAlarmVideo>.
optional
channelId: number
Zero-based channel, 0 to 63.
optional
fileHandle: number
The search handle from cmd 272, used by cmds 273 and 274.
optional
streamType: number
Request only: stream type, 0 to 7.
optional
startTime: FindAlarmVideoTime
Request only: start of the search window.
optional
endTime: FindAlarmVideoTime
Request only: end of the search window.
optional
alarmType: string
Request only: the alarm kinds to find, as words such as md,
people or visitor. The firmware searches for each word in the
text, so a separator is not significant.