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Appendix c: bandwidth and video size estimation – PLANET ICA-525 User Manual

Page 73

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Appendix C: Bandwidth and Video Size

Estimation

The frame rate of video transmitted from the ICA-525 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 ICA-525.

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 ICA-525 may be varying.

Image Resolution

Average range of Data Sizes

for JPEG mode

Average bit rate for MPEG4 mode

160 x 120 (QQVGA)

3 ~ 6k byte per frame

64kbps~384kbps @ 30fps

320 x 240 (QVGA)

8 ~ 20k byte per frame

128kbps~768kbps @ 30fps

640 x 480 (VGA)

20 ~ 50K byte per frame

256kbps~4096kbps @ 30fps

Note: Audio streaming also takes bandwidth around 5 kbps to 64kbps. Most
xDSL/Cable modem upload speeds may not even reach up to 128 kbps. Thus,
you may not be able to receive any video while 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.

MJPEG

Resolution

Quality setting

fps setting

Current stream

Current fps

320*240 CIF

Best

5 fps

around 2300Kbps

5 fps

320*240 CIF

Best

15 fps

around 6700Kbps

14.7fps

320*240 CIF

Best

25 fps

around 14300Kbps

28 fps

320*240 CIF

Normal

5 fps

around 400Kbps

4.2 fps

320*240 CIF

Normal

15 fps

around 1200Kbps

13 fps - 14 fps

320*240 CIF

Normal

25 fps

around 1700Kbps

30fps

320*240 CIF

Lowest

5 fps

around 350Kbps

4.2 fps

320*240 CIF

Lowest

15 fps

around 1100Kbps

13 - 14fps

320*240 CIF

Lowest

25 fps

around 2000Kbps

25 fps


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