Panic Alarm Station User Manual
53
Resolution
Select according to the requirements of video definition. The higher the resolution, the higher
the network bandwidth required.
Bit Rate Type
You can select Constant Bit Rate or Variable Bit Rate. The default is constant bit rate. If
constant bit rate is selected, you need to select a fixed rate value; if variable bit rate is selected,
you need to select a limit value of the rate.
Image Quality
You can select different levels of image quality according to your requirements. The higher the
quality, the higher the network bandwidth required. When the bit rate is constant bit rate, the
image quality can not be selected by default.
Frame Rate
Display the number of frames per second of the video. According to the bandwidth settings,
the higher the frame rate, the higher network bandwidth required, and the higher the storage
space required.
I Frame Interval
The number of frames between the two key frames. The larger the I frame interval is, the
smaller the code stream fluctuation is, but the image quality is relatively poor. On the contrary,
the larger the code stream fluctuation is, the higher the image quality is. It is recommended to
use the default value.
Video Encoding
The default video encoding type is H.264.
SVC Encoding
It is an expandable video encoding technology. The SVC function can be used to extract frames
for video recording to reduce storage space. The video files after frame extraction still support
normal decoding. When the SVC function is enabled, the storage device and the decoding
device should all support this function. When the SVC function is selected as automatic, the
device will adapt to the current network environment and decide whether to send frames to
ensure that the image can be previewed normally.
Video&Audio Encoding
The video and audio encoding type supported by the current device. When the stream type is
the main stream, the types are G.711ulaw, AAC, PCM; The sub-tream is consistent with the
main stream.
Audio
Steps
1. Click Video/Audio → Audio.
2. Set parameters.
Audio Encoding
The current device supports G.711ulaw, AAC, OPUS, PCM and ADPCM.
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