CONCORD QV5200 Manual page 59

Chapter 7 Record Setup
7.3 Record
In this menu you can select the cameras you want recording, what their Stream Mode is and whether you want them to Pre-record.
Record Enable can be deselected if you have a camera
that you want to use for live view only. Your recorder will
detect motion but it will not keep a recording, you will
also not be able to use manual record.
Stream Mode is where you select whether to record in
DualStream, which will record both the Mainstream
resolution and the Substream resolution or Mainstream
only. If you intend to use the Mobile App then it is best
to keep this set at DualStream.
PreRecord function can also be deactivated in this
menu. This function allows your recorder to record a few
seconds before an event occurs, this is a useful feature
as there could be important footage that occurred just
before the recording was triggered, especially if the
person triggering the recording has their back to the
camera once the recording begins. We recommend you
leave this box ticked.