Help implementing QoS for Video Streaming

Question

Hello friends!
I am trying to implement a quality of service logic for a videoplayer based on the Brightcove API. As I have learned it's a better idea to use methods in NetStreamInfo class (eg. currentBytesPerSecond) rather than using a native bandwith check.
E.g. (where nc is a NetConnection object)
var ns:NetStream = new NetStream(nc);
var nsi:NetStreamInfo = ns.info;
var cbytes:Number = nsi.currentBytesPerSecond;
use cbytes to evaluate which quality to chose...
The problem is that streams are initiated (by videoplayer) using the Brightcove API and not directly using NetConnection.connect(). The BC API doesnt seem to give me any access to the classes listed above either, altough I'm certain it's utilizing them.
Are there any Brightcove or video streaming experts out there that have a clue as to how I can access the NetConnection object used by Brightcove? Or if i can access the NetStream object or even tge NetStreamInfo object directly.
best regards,
Fredrik

Answer 1

You don't have your egress queuing setup. You need to map your COS values to a queue, then you can allocate bandwidth to those queue's. This makes lower priority traffic wait while higher priority traffic gets transmitted.
I have a few configuration examples on my site that may help you. Remember that the config that I have may not be the best for your network so you will have to figure that out yourself.
http://goatnetworking.com/CiscoCSwitchQOSConfig.php
Make sure that your QOS profile on the WLC is set correctly. I found one of my controllers didn't even have a value set in the profile, but the profile was applied and doing nothing.
You need to apply the policy map to mark packets on the port where the video source is on your network.
You need to Trust DSCP on all of your trunk ports or the switch will ignore the dscp markings.
QOS may only be one of many issues that may be causing your problem. Your AP's could be overloaded with clients, your data rates may not be optimized, etc..
I hope this helps
Scape