Here's what Adobe recommends:
http://www.adobe.com/devnet/adobe-media ... popup.htmlTable 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%
Roku 1 XDS connected via ethernet
Roku LT via WIFI
Apple Airport Extreme