Audio synchronize Problem

Hi

I doing live streaming from vlc with Video codec h264 and audio mpga/mp4a/mp3 ( mpegts ) .

When i play http://192.168.0.15:4545 in bouquet.

Video Load and play perfectly.

both video and audio work ok.

Problem is after some minutes audio syncronize change. Example : First Audio come after 2 seconds LIBS move for this audio .

How i can solve this issue.?

Thanks