<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=us-ascii"> <STYLE type=text/css></STYLE> <META content="MSHTML 6.00.2800.1611" name=GENERATOR></HEAD> <BODY> <DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN class=500200609-29072008>What's the rootcause of noise and stuttering ?</SPAN></FONT></DIV> <DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN class=500200609-29072008></SPAN></FONT> </DIV> <DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN class=500200609-29072008>For normal playback, it should not have issues. If decoder didn't drop data, I think alsasink did it.</SPAN></FONT></DIV> <DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN class=500200609-29072008>By gstaudiosink mechanism, it will drop data replaced with blank data when data is late. I guess the rootcause is that.</SPAN></FONT></DIV> <DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN class=500200609-29072008></SPAN></FONT> </DIV> <DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN class=500200609-29072008>If that, I have no ideas except adding a queue before alsasink, and when queue is empty, pause the pipeline, it will not cause dropout, but still discontinous.</SPAN></FONT></DIV> <DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN class=500200609-29072008></SPAN></FONT> </DIV> <DIV class=Section1><SPAN class=500200609-29072008></SPAN><FONT face="Courier New"><FONT color=#0000ff>Z<SPAN class=500200609-29072008>hao liang</SPAN></FONT></FONT><BR></DIV> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> <FONT face=Tahoma size=2><B>From:</B> gstreamer-embedded-bounces@lists.sourceforge.net [mailto:gstreamer-embedded-bounces@lists.sourceforge.net] <B>On Behalf Of </B>Dennis Fleming<BR><B>Sent:</B> Tuesday, July 29, 2008 4:37 AM<BR><B>To:</B> gstreamer-embedded@lists.sourceforge.net<BR><B>Subject:</B> [gst-embedded] noise and stuttering<BR></FONT><BR></DIV> <DIV></DIV> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif"> <DIV>I'm trying to create an audio player on an IMX31 target and I've found a discrepancy in the output of various formats.  If I send MP3 data I have to set the buffer-time and latency-time to 10000 and 100 respectively to play without severe dropouts.  However WAV files still have drop-out at a consistent rate (about 1 per 10 sec).  Are there some general features I'm missing or is there some guidance on the buffer-time/latency time that would account for this difference?<BR><BR>Linux 2.6.22.19<BR>gstreamer 0.10.17 (open-embedded)<BR>gst-launch filesrc location=<file> ! decodebin ! alsasink buffer-time=10000 latency-time=100<BR><BR>Dennis<BR></DIV></DIV></BODY></HTML>