DS-2TD2xxx-xxxx/xx Thermal and Optical Bi-Spectrum Network Camera User Manual
UM DS-2TD2xx-xxxx/xx Thermal 072020NA 41
Chapter 9 Video and Audio
This section addresses video and audio related parameter configuration.
9.1 Video Settings
Setting video parameters such as stream type, video encoding, and resolution.
1. Go to setting page: Configuration → Video/Audio → Video.
For devices with multiple camera channels, select a channel before other settings.
9.1.1 Stream Type
For devices that support more than one stream, you can specify parameters for each stream type.
• Main Stream: The best stream performance the device supports. It usually offers the device’s best
resolution and frame rate. But high resolution and frame rate usually means more storage space and
higher bandwidth requirements in transmission.
• Sub Stream: Comparatively low resolution options, which consumes less bandwidth and storage
space.
• Other Streams: Steams other than the main stream and sub stream may also be offered for customized
usage.
9.1.2 Video Type
Select the content (video and audio) that should be contained in the stream.
• Video: Only video content is contained in the stream.
• Video & Audio: Video content and audio content are contained in the composite stream.
9.1.3 Resolution
Select video resolution according to actual needs. Higher resolution requires higher bandwidth and
storage.
9.1.4 Bitrate Type and Max. Bitrate
• Constant Bitrate: Stream is compressed and transmitted at a comparatively fixed bitrate. The
compression speed is fast, but image mosaic may occur.
• Variable Bitrate: Device automatically adjusts the bitrate under the set Max. Bitrate. The compression
speed is slower than that of the constant bitrate, but it guarantees the image quality of complex
scenes.
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