how to play h.264 stream immediately

There's a server, which sends an AVCDecoderConfigurationRecord tag and continuous H264 video tags. In the client, I use NetStream and appendBytes (Data Generation Mode) to display the video. The code likes that

video = new Video

addChild(vdieo)

socket = new Socket

socket.connect(server)

socket.addEventListener(SOCEKT_DATA, onRecv)

nc = new NetConnection

nc.connect(null)

ns = new NetStream(nc)

ns.client = this

ns.play(null)

videon.attachNetStream(ns)

function onRecv(e) : void {

     data = new ByteArray

     socket.readBytes(data)

     if (data-is-AVCDecoderConfigurationRecord-tag) {

          ns.appendBytesAction(RESET_BEGIN)

     }

     ns.appendBytes(data)

}

The client works, howerver, the NetStream does not start palying the video until it caches about 20 tags into the buffer (about 2 seconds, because the fps is 10). It does not satisfy my requirement that I need to play the stream immediately while the client receives a tag.  I set the bufferTime = 0 or other small number, there's no effect, waiting about 20 tags as usual. While I set the bufferTime bigger such as 5, it works that NetStream waiting more tags.

In Adobe document, I find this information and I try to use the END_SEQUENCE several ways, but all of them do not work.

Is there a way to play the H264 tag immediately without buffer?