One recording, an <alarmVideo> in <alarmVideoList>.
fileName: string
Name built as two digits followed by a 14-digit date and time.
alarmType: string
What triggered the recording: md, people, face, vehicle,
dog_cat, visitor, package, io, man_rec, time_rec, talk
or answer; empty for a kind the firmware does not name.
fileId: string
File id of the recording.
optional
typeExtension: number
1 or 2 for two internal file kinds; absent otherwise.
When the recording starts.
When the recording ends.