streamed video stop playing in actionscript

Question

I have developed video recorder and player. Which will recorder video to flash media server.

When i start recording i set camera quality as following

cam.setQuality(65536, 65);
mic.setRate(44);

I will record perfectly on save video. Video will move from streaming folder to another folder. On play click video will play that place.

Now, problem is when i start playing then video played some second and then stop playing. Only volume i can listen. Video will not playing.

What is the issue of that?
Is some frames cut or bandwidth issue?

Edit:

Initialize camera as follow:

cam = Camera.get();
mic = Microphone.get();
mic.setCodec("Speex");
mic.setRate(44);
mic.setUseEchoSuppression(true);
mic.setSilenceLevel(0);
cam.setMode(627,353,24,true);
cam.setLoopback(true);
cam.setQuality(65536, 65);
mic.setRate(44);

for record flv:

ns.publish(fileName, "record");

Ex. Currently i record video of 5 minute then i play it so, it played upto only 2:10 then after it stops playing video and play only audio. same happen when play with vlc player.

If i record with same code locally stream server then works perfectly.