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H.264H: High Profile encode mode.
H.264B: Baseline Profile encode mode.
H.265: Main Profile encode mode.
MJPEG: System needs high bit streams to guarantee video definition. Use the recommended max
bit stream value to get the better video effect.
Smart Codec: This function is to reduce bit streams.
Note
Some series products support smart codec function.
After changing smart code, please reboot network camera and some network camera functions
(such as IVS, ROI, SVC, lobby mode and etc.) becomes null. Please think twice before the
operation.
Resolution:
The resolution here refers to the capability of the network camera.
Note
Different series products support different resolutions. Please refer to the actual interface for
detailed information.
Frame rate (FPS): The video frame amount displayed in each second. The higher the frame rate is,
the clearer and more fluent the video is. The frame rate may vary depending on the resolution.
Bit rate type: System supports two types: CBR and VBR.
Main stream: It is to set frame rate to change video quality. The higher the frame rate is , the
better the video quality is. The referenced bit rate is the recommended value.
Sub stream: In CBR mode, the bit stream is near the specified value. In VBR mode, the video
quality changes according to the bit stream value. But its max value is near the specified value.
Reference bit rate: The reference bit rate depends on the resolution and frame rate you set.
Video/audio: You can enable or disable the video/audio. The main stream is enabled by default.
After enable the audio function, the record file is composite file consisting of the video and audio. For
the sub stream 1, please enable video first and then enable audio function.
Audio format: Set audio encode format.
Note
Different series products support different audio encode mode. Please refer to the actual int erface
for detailed information.
Sampling rate: Audio sampling rate refers to the sampling amount within 1 second. The higher the
value is, the better the audio is. The default setup is 8K.
Copy: After you complete the setup, you can click Copy button to copy current setup to other
channel(s). You can see an interface is shown as in Figure 4-52. You can see current channel
number is grey. Please check the number to select the channel or you can check the box ALL.
Please click the OK button in Figure 4-52 and Figure 4-50 respectively to complete the setup. Please
note, once you check the All box, you set same encode setup for all channels. Audio/video enable
box, overlay button and the copy button is shield.
Please highlight icon
to select the corresponding function.
Summary of Contents for NVR21-S2 SERIES
Page 1: ...Dahua Network Video Recorder User s Manual V 4 3 0...
Page 138: ...124 Figure 3 5 3 6 6 NVR42N Series Please refer to Figure 3 6 for connection sample Figure 3 6...
Page 142: ...128 Figure 3 11 3 6 12 NVR42V 8P Series Please refer to Figure 3 12 for connection sample...
Page 143: ...129 Figure 3 12...
Page 157: ...143 Figure 4 15 Step 2 Click device display edit interface See Figure 4 16...
Page 220: ...206 Figure 4 93 Figure 4 94...
Page 240: ...226 Figure 4 110 Figure 4 111 Figure 4 112...
Page 251: ...237 Figure 4 123 Figure 4 124...
Page 253: ...239 Figure 4 126 Click draw button to draw the zone See Figure 4 127...
Page 257: ...243 Figure 4 130 Click Draw button to draw a zone See Figure 4 131 Figure 4 131...
Page 262: ...248 Figure 4 136 Click draw button to draw the zone See Figure 4 137...
Page 275: ...261 Figure 4 148 Figure 4 149...
Page 276: ...262 Figure 4 150 Figure 4 151...
Page 387: ...373 Figure 5 60 Figure 5 61...
Page 388: ...374 Figure 5 62 Figure 5 63...
Page 412: ...398 Figure 5 96 Figure 5 97...
