AVer SF1311H-B - Manual (Page 58)

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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 for 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.