ALFA NETWORK AIPC933D - Manual (Page 73)

Network Camera User’s Guide
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Appendix D: Bandwidth
Estimation
The frame rate of video transmitted from the device depends on connection bandwidth
between client and server, video resolution, codec type, and quality setting of server.
Here is a guideline to help you roughly estimate the bandwidth requirements form your
device.
The required bandwidth depends on content of video source. The slow motion video will
produce smaller bit rate generally and fast motion will produce higher bit rate vice versa.
Actual results generated by the device may be varying.
Image
Resolution
Average range of
data sizes for JPEG
mode
Average bit rate for
MPEG4 mode
Average bit rate for
H.264 mode
160 x 120
(QQVGA)
3 ~ 6k byte per
frame
64kbps~256kbps
@ 30fps
32kbps~192kbps
@ 30fps
320 x 240
(QVGA)
8 ~ 20k byte per
frame
256kbps~768kbps
@ 30fps
192kbps~512kbps
@ 30fps
640 x 480
(VGA)
20 ~ 50K byte per
frame
512kbps~2048kbps
@ 30fps
384kbps~1536kbps
@ 30fps
1280x1024
(SXGA)
100 ~ 200k byte per
frame
NA 512kbps~3076kbps
@ 15fps
Note:
Audio streaming also takes bandwidth around 32kbps. Some
xDSL/Cable modem upload speeds could not even reach up to 128 kbps.
Thus, you may not be able to receive good quality video while also streaming
audio on a 128 kbps or lower connection. Even though the upload speed is
more than 128kbps, for optimal video performance, disabling audio
streaming will get better video performance.