<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE>Message</TITLE> <META http-equiv=Content-Type content="text/html; charset=us-ascii"> <META content="MSHTML 6.00.6000.16674" name=GENERATOR></HEAD> <BODY> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008>Hi, all,</SPAN></FONT></DIV> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008></SPAN></FONT> </DIV> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008>I am doing a project to port the gstreamer framework to a target board, which is running linux 2.6.24 on ARM 9, and the RAM on the board is 32Mbyte.</SPAN></FONT></DIV> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008></SPAN></FONT> </DIV> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008>When I tried to use the gstmad and alsalink plugin to play a MP3 file ( "gst-launch location = abc.mp3 ! mad ! alsasink"), I found there is constant audio underrrun reported from the ALSA driver and thus there are on/off in the audio output. I've also tried other MP3 demux/decoders such as ffdemux_mp3 and ffdec_mp3 but the result is same. After I enabled the debugging on the filesrc plugin, I noticed there is a break/pause sometimes (happening randomly) during the playback. I suspect this could be the reason of the audio underrun but I don't know why this break/pause happens. </SPAN></FONT></DIV> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008></SPAN></FONT><FONT face=Arial size=2><SPAN class=408554510-17072008></SPAN></FONT> </DIV> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008>Anyone has any idea? Please help.</SPAN></FONT></DIV> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008></SPAN></FONT> </DIV> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008>regards,</SPAN></FONT></DIV> <DIV><FONT face=Arial size=2><SPAN class=408554510-17072008>Jianfeng</SPAN></FONT></DIV></BODY></HTML>