Table 1. Recommended bit rates for live streaming

Video size types Video size 4:3 aspect size 16:9 aspect size Total bit rate (Kbps) High-motion events
(sports, news events)
Low-motion events
(music events, concerts)
% US broadband consumers*
          Video bit rate (Kbps) Audio bit rate (Kbps) Video bit rate (Kbps) Audio bit rate (Kbps)  
QCIF 176×144 144×108
192×144
192×108
256×144
48
96
32
80
16 (mono)
16 (mono)
32
80
16 (mono)
16 (mono)
Modem and ISDN
2%
CIF 352×288 288×216
320×240
384×216
384×216
300
500
268
468
32 (stereo)
32 (stereo)
268
468
32 (stereo)
32 (stereo)
Low-end DSL
4%
D1 720×486 640×480
640×480
852×480
852×480
800
1200
768
1168
32 (stereo)
32 (stereo)
736
1136
64 (stereo)
64 (stereo)
Faster DSL
25%
HD 1280×720
1280×720
1280×720
1800
2400
1736
2336
64 (stereo)
64 (stereo)
1672
2272
128 (stereo)
128 (stereo)
Cable modems
69%

* Note: Basedon the IDC 2008 Consumer Panel Broadband Survey. Each figure represents the percentage of users who have the bandwidthto support the respective total bit rate in that category. For example, 25% of usershave bandwidth of at least 1200 Kbps to support the D1 video type but don'thave the higher bandwidth needed to support the next higher bit rate of 1800Kbps.