Q-See QSD6204 - Manual (Page 46)

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Recording Time Table
(Per 160GB of storage with the installation of 4 cameras.)
Unit: Hour
Standard Quality 60fps 48fps 32fps 16fps 1fps
Highest 62 78 116 232 3720
High 88 110 165 330 5280
Normal 107 134 201 401 6420
NTSC
Lower 120 150 225 450 7200
Standard Quality 50fps 36fps 24fps 12fps 1fps
Highest 64 89 133 267 3200
High 90 125 188 375 4500
Normal 110 153 229 458 5500
PAL
Lower 123 171 256 513 6150
The figures in the table above were estimated under ideal recording conditions
and may vary from your actual recording situation.
In the table above, multiply by 2 for recording hours with an 320 GB HDD and 3
for recording hours with a 500 GB HDD.
The complexity of the image and the amount of motion recorded greatly
influences the recording capacity of your hard drive (HDD). The higher the
frames per second and the higher the video quality setting, the lower your HDD
recording capacity will be. In the same manner, the lower the frames per second
setting and the lower the video quality setting, the higher your HDD recording
capacity will be.
Note that the lower frame rate does not mean a lower video quality. The video
quality remains the same whether the frames per second setting is set high or low.
One frame per second is the same as taking a photo every second.
NTSC:Max.60 fps, PAL:Max.50 fps
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