Dynamic streaming taking too long time to switch video using NetStreamPlayOptions in AS3

Question

Hi,
     Can any one tell me why dynamic streaming taking too much time to switch video from lower bit rate to higher bit rate and vice versa.
I am doing dynamic streaming in following ways -
var param:NetStreamPlayOptions = new NetStreamPlayOptions();
param.oldStreamName=oldStream();
param.streamName=newStream()
param.transition=NetStreamPlayTransitions.SWITCH;
ns.play2(param);
ns.addEventListener(NetStatusEvent.NET_STATUS, switchMode);
I am using duel buffering and that is 3 seconds when video starts and 10 seconds when "NetStream.Buffer.Full". Video taking approximately 30-50 seconds to switch video and when I am calling the above code.
Thanks & regards
Sunil Kumar

Answer 1

Hi Sunil,
Was my link useful to you? If you have not gone through the link which I suggested just go through the below lines it may help you:
For a faster switch with optimal keyframe interval and client-side buffer, when Flash Media Server (FMS) receives a "switch" command, the server waits for a keyframe to switch to the new stream. FMS looks for the keyframes in the new stream in chunks equal to the client's buffer size(NetStream.bufferTime), so having a client buffer larger than the keyframe interval of the stream would help with a fast switch response time from the server—in other words, a shorter delay between a "switch" call to the server and the client receiving bits from the new stream in response.
Following values are considered most optimal:
Keyframe interval: 5 sec.
Client-side buffer: 6–10 sec.
So to maintain optimal keyframe interval you can go for fresh encoding of your videos which will give you a chance to set keyframe interval or if you dont want to do this then I would suggest you to increase the client-side buffer.
Regards,
Amit