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Page 43
Using the camera as a continuously recording DVR
With the larger MicroSD cards it is practical to use the camera as a
continuously recording DVR (Digital Video Recorder) with the right settings.
A 2 GB MicroSD card has about 1872 usable megabytes of storage space after
formatting. At the very highest settings of video quality with highest picture
size, this is only about 2 hours worth of storage.
However, if you set up the “Secondary Stream” in the camera’s “
Stream
Setup
” menu with 320x240 resolution, a frame rate of 10 fps, and bit rate of
120K, this will be reduced to about 12 megabytes per 10 minute clip or 75
megabytes per hour, which allows 24 hours recording time on the 2 GB card.
With the maximum supported MicroSD size of 16 GB card this can be
extended to slightly over 1 week, or you can instead increase video quality.
Increased MPEG4 bit rate improves image sharpness while increased frame
rate makes motion appear smoother. The camera supports a frame rate of up
to 15 fps and a bit rate of up to 1024K for recording to MicroSD or NAS drive.
To limit file sizes, video is recorded in clips of up to 10 minutes (600 seconds).
You can then view your files in the “
Browse Storage
” menu in the “
Continuous
Record
” folder. There will be 6 files per hour in QuickTime MOV format. After
the MicroSD card is full or the limit of 1000 files is reached, the oldest file is
automatically deleted. Alternatively you can also enable recording to a NAS
drive as described in the next chapter, giving the camera NVR (Network Video
Recorder) functionality.