4
Recording: Encode
The
Recording: Encode
menu allows you to alter and
customize how the device records footage and encodes
the files.
Encoding is a term which refers to the compression al-
gorithm (a fancy computer term for “make the file small-
er while retaining visual quality”) used by the device.
You can choose and alter:
• The frame rate (how many images per second the de-
vice records)
• The bit rate of each video stream. The higher the data
rate, the “better” your images will look, but the more
space they’ll require on your memory card
Camera No:
The channel feed you want to alter the settings for.
Camera Name:
You can edit the name of the camera.
Encoding Parameters:
Whether you’re editing the parameters for the
mainstream or the substream.
Main-Stream:
The main-stream is the video feed that the device will
record and display. This is the higher-quality stream.
Sub-Stream:
The sub-stream is the video stream that the device will
send to remote devices via a network or the Internet. It is the low-
er-quality stream as a reduction in video size makes it easier to send
over a network.
Record Audio:
This is enabled by default.
Resolution:
The resolution cannot be changed.
Frame Rate:
The number of frames per second (fps) that the device will
record. The default (and maximum) is referred to as “real-time” and is
15fps. Reducing the number of frames per second will not save on stor-
age space but potentially will improve the data-rate per frame (depend-
ing how you set the bit-rate - see the next point).
Remember that your FPS count is the same as saying “take X photo-
graph per second” (where X is your FPS setting). 6fps doesn’t sound like
much, but it’s still six individual photographs per second. If maintain-
ing image clarity while reducing storage consumption is your priority, it
makes sense to lower the frame rate.
Max. BitRate(Kbps):
The actual amount of data that the device will use
to record video. The higher the bitrate, the more space each recording
will take. Generally speaking, recordings encoded at higher bitrates will
be of better quality, especially when recording movement.
The main-stream uses a variable bitrate to record video - the more
movement occurs in the video, the higher the bitrate will have to be.
When there’s little movement in view, the device will automatically re-
duce the bitrate to conserve space.
The sub-stream uses a constant bit-rate. This makes the video easier to
stream over a network or the Internet.
Tap APPLY to save settings.
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