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Appendix C: Bandwidth Estimation
The frame rate of video transmitted from the camera 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 camera.
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 camera 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
25kbps~512kbps
@ 30fps
320 x 240
(QVGA)
8 ~ 20k byte per
frame
NA
128kbps~2048kbps
@ 30fps
640 x 480
(VGA)
20 ~ 50K byte per
frame
NA
384kbps~4096kbps
@ 30fps
1280x720
(720p)
100 ~ 200K byte per
frame
NA
1,024kbps~8,000kbps
@ 30fps
)
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.