DW DWC-VSTB04Bi User Manual page 17

Resolution, Frame rate, Bitrate type, video quality, etc. Three video streams are
available for configuration in this menu. Viewing experience is subject to the
actual network conditions.
• Resolution: Adjust the stream resolution from the available options
in the drop-down menu.
• Frame rate: The higher the frame rate, the more individual frames
will be shown per second. A higher FPS results in smoother video
but will increase the bitrate of the video stream.
• Bitrate type: Select between CBR and VBR bitrate types. Bitrate is
related to image quality.
• Bitrate (Kbps): Bitrate type must be set to CBR to manually adjust
this setting. A higher bitrate will result in better image quality.
• Video Quality: Bitrate type must be set to VBR to manually adjust
this setting. The higher the image quality, the more bitrate will be
required.
• I-Frame interval: Determines how many frames are allowed
between a "group of pictures" when a new scene begins in a video,
until that scene ends, and if an entire group of frames (or pictures)
can be considered as a "group of pictures". If there is not much
motion in the scene, setting the value higher than the frame rate
can potentially resulting in less bandwidth usage. However, if the
o
CBR: Compression bitrate will remain constant, of
change in the video scene.
o VBR: Compression bitrate will be adjusted according
to scene changes. For example, for scenes that do
not have much movement, the bitrate will remain at
a lower value. This can help optimize the network
bandwidth usage of the camera.
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