D-Link DCS-6915 User Manual page 30

Section 3: Advanced Configuration
Video Quality Setting for Stream 1 - 4
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 three options, H.264 consumes much less network bandwidth compared to
MPEG4 and 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. There are 8 options you can select:
352x240, 640x480, 720x480, 800x600, 1024x768, 1280x720, 1280x1024, 1920x1080.
Maximum Frame Rate: This option affects the smoothness of the video. Select higher
frame rate for smoother video quality but it requires more storage usage. 3 options for
selection: customize, 15 fps, 30fps.)
Intra Frame Period: Determine how often to plant an I frame 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 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-6915 User Manual 30