<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <style type="text/css" style="display:none;"></style> </head> <body dir="ltr"> <div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Helvetica,sans-serif;" dir="ltr"> <p>hi folks,</p> <p><br> </p> <p>I'm trying to interleave 2 audio channels into one and encode it into AAC stream. The gst-launch command is like:</p> <p><span>gst-launch-1.0 audiotestsrc wave=1 ! interleave name=i ! 'audio/x-raw,channels=2' ! faac ! fakesink audiotestsrc wave=0 ! i.</span><br> </p> <p><span><br> </span></p> <p><span>Then I got below errors</span></p> <p><span><br> </span></p> <p><span></p> <div>Setting pipeline to PAUSED ...</div> <div>Pipeline is PREROLLING ...</div> <div>ERROR: from element /GstPipeline:pipeline0/GstAudioTestSrc:audiotestsrc1: Internal data flow error.</div> <div>Additional debug info:</div> <div>gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstAudioTestSrc:audiotestsrc1:</div> <div>streaming task paused, reason not-negotiated (-4)</div> <div>ERROR: pipeline doesn't want to preroll.</div> <div>Setting pipeline to NULL ...</div> <div>Freeing pipeline ...</div> <div><br> </div> <br> </span> <p></p> <p><span>Can someone please give some pointers here? Thanks.</span></p> <p><span><br> </span></p> <p><span>Xin</span></p> </div> </body> </html>