D-Link DCS-6517 User Manual page 44

Configuration
Aspect Ration
Choose ether 4:3 or 16:9 for the aspect ration. This will format the video stream
to better fit the type of display that it will be viewed on. 4:3 is better for standard
definition displays, while 16:9 is meant for displays that are capable of showing wide
format content.
Video Quality Setting for Stream 1~3
Compression Type: The compression level affects the amount of bandwidth and
storage required. Lower compression uses more bandwidth and storage but delivers
better image quality. Of the two options, H.264 consumes much less network
bandwidth compared to JPEG.
Frame Size: Select proper frame size for different viewing devices, bigger frame size
requires more bandwidth and storage usage. For smaller viewers, such as mobile
phones, a smaller frame size and lower frame rate is recommended.
Frame Rate: This option affects the smoothness of the video. Select higher frame
rate for smoother video quality but it requires more storage usage. 10 options
for selection: customize, 1, 2, 3, 5, 8, 10, 15, 20, 25, and 30. The frame rate may
automatically change and some options may not be available depending on the
resolution. The max. frame rate of 4:3 aspect ratio resolution is 15 fps.
Intra Frame Period: Determines the frequency and I frame is planted. The shorter the
duration, the more likely you will get better video quality, but at the cost of higher
network bandwidth consumption. Select the intra frame period from the following
durations: 1/4 second, 1/2 second, 1 second, 2 seconds, 3 seconds and 4 seconds.
Video Quality: This setting limits the maximum refresh frame rate.
• Constant bit rate: To set a fixed bandwidth regardless of the video quality, select
Constant bit rate and the desired bandwidth from 20 Kbps to 8 Mbps. You can also
select Customize and manually enter a value.
• Fixed quality: To optimize the bandwidth utilization and video quality. The
video quality can be adjusted to the following setting: Medium, Standard, Good,
Detailed and Excellent. You can also select Customize and manually enter a value.
D-Link DCS-6517 User Manual 44