AVer SF1311H-C - Manual (Page 60)

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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.