Your available bandwidth will determine what broadcast quality, or more precisely, what resolution you should use. For example, if you have a total upload speed of 900 kbps then you would have roughly 450 to 630 kbps available for your audio and video broadcast. (Recommendation #1 was to not use more than 50-70% of your available upload speed.) Since audio typically uses approximately 100 kbps, you would then have about 350 to 530 kbps left over for video. In looking at our chart, this means you could broadcast at 360p at one of the standard resolutions listed (e.g. 640x360 for 16:9 aspect ratio, 480x360 for 4:3 aspect ratio).
Once you pick your broadcast resolution based on your available upload bandwidth, we recommend you embed a player on your site to match your output resolution. For example, if you set the encoder's output size to 480x360 then you would want to embed a player on your site with a 480x360 picture window. One common exception to matching the output resolution and embedded picture window size is that sometimes people with limited Internet connections will broadcast a small output resolution and then scale up the picture by embedding a larger picture window on their website. (For example, if your Internet connection only allows for 320x240 broadcast, but you want a larger picture window size, then you could set your output resolution at 320x240 and then place a 640x480 player on your website. The picture is a bit grainy, but it is an effective way to get a large, decent looking picture out of a limited Internet connection.)
NOTE: If you have a lot of movement in your broadcast such as cameras panning, zooming, and camera-switching transitions, you will likely need to set your broadcast bit rate higher than the minimum recommendation listed above. Streaming content with a lot of movement requires additional bandwidth (and encoding computer processor power) and you may want to increase your broadcast bit rate to 20-50% higher than what is listed here. Alternatively, if you use a single camera in a fixed position without any panning or zooming you could broadcast at a slightly lower bit rate and still have a nice quality.
Lastly, please keep in mind, broadcasting at higher bit rates and resolution requires more than just enough bandwidth. See our broadcasting in HD on PC or a Mac articles as well as our Set Proper Bit Rate for Your Broadcast article for additional details.