AirLive BU-3025 - Manual (Page 57)

5. Appendix
AirLive BU-3025 Manual 51
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.