HIKVISION DS-2TD6267-75C4L/W User Manual page 56

DS-2TD6267-75C4L/W Thermal & Optical Bi-Spectrum PTZ Network Camera User Manual
Profile: This function means that under the same bitrate, the more complex the profile, the higher the
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image quality, and the network bandwidth requirement is also higher.
I-Frame Interval: The number of frames between two I-frames.
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In H.264 and H.265, an I-frame, or intra-frame, is a self-contained frame that can be independently
decoded without any reference to other images. An I-frame consumes more bits than other frames.
Thus, video with more I-frames, in other words, smaller I-frame interval, generates more steady and
reliable data bits while requiring more storage space.
SVC (Scalable Video Coding): The Annex G extension of the H.264 or H.265 video compression standard.
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The objective of SVC standardization has been to enable encoding of a high-quality video bitstream
that contains one or more subset bitstreams that can themselves be decoded with a complexity and
reconstruction quality similar to that achieved using the existing H.264 or H.265 design with the same
quantity of data as in the subset bitstream. The subset bitstream is derived by dropping packets from
the larger bitstream.
SVC enables forward compatibility for older hardware: the same bitstream can be consumed by basic
hardware that can decode only a low-resolution subset, while more advanced hardware will be able to
decode high quality video streams.
Smoothing
This refers to the smoothness of the stream. The higher value of the smoothing, the better the fluency of
the stream, though, the video quality may not be so satisfactory. The lower the value of the smoothing,
the higher the quality of the stream, though it may appear not fluent.
Display VCA Info
VCA information can be displayed by Player and Video.
• Player: Player means the VCA info can be displayed by the dedicated player provided by the
manufacturer.
• Video: Video means the VCA info can be displayed by any general video player.
Audio Settings
This is a function to set audio parameters such as audio encoding and environment noise filtering. Go to
the audio settings page: Configuration → Video/Audio → Audio.
• Audio Encoding: Select the audio encoding compression of the audio.
• Audio Input: Connect the audio input device as required.
NOTE: The audio input display varies by model.
Set Audio Input to LineIn when the device connects to an audio input device with high output
LineIn
power such as MP3, synthesizer, or active pickup.
Set Audio Input to MicIn when the device connects to an audio input device with low output
MicIn
power such as a microphone or passive pickup.
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