<style id="sinamailpaperfilter">.sinamailpaper-0{cursor:text;}.sinamailpaper-0 td,.sinamailpaper-0 textarea,.sinamailpaper-0 input,.sinamailpaper-0 br,.sinamailpaper-0 div,.sinamailpaper-0 span{font-size:14px;font-family:"????",Verdana,Arial,Helvetica,sans-serif;line-height:1.5;}.sinamailpaper-0 p{*margin:0.2em auto;}.sinamailpaper-0 img{border:0;}.sinamailpaper-0 pre{white-space:normal;}.sinamailpaper-0 form{margin:0;}</style>&nbsp;Hi, <br>I have built gstreamer-0.10.21 in FC9 laptop. And when I started gstreamer-0.10.21/tests/benchmarks/mass-elements, I got following messages,<br><br>*** benchmarking this pipeline: fakesrc num-buffers=1000 ! 1000 * identity ! fakesink<br>no element named "fakesrc" found, aborting..<br><br>Then, when I started gstreamer-0.10.21/tests/benchmarks/.libs/mass-elements, I got this message,<br><br>*** benchmarking this pipeline: fakesrc num-buffers=1000 ! 1000 * identity ! fakesink<br>0:00:00.903412000 - creating 1000 identity elements<br>**<br>** ERROR:(mass-elements.c:96):main: code should not be reached<br>Aborted<br><br>There already installed gstreamer in my FC9, what I am doing is just to test it with 0.10.21, and I can get this<br><br>gst-inspect | grep "fake"<br>coreelements:&nbsp; fakesink: Fake Sink<br>coreelements:&nbsp; fakesrc: Fake Source<br><br>I am not familiar with gstreamter, so would you like to help me with that ?<br><br>Thanks and regards,<br><br><br><hr /><br /><a href = 'http://space.sina.com.cn/ '>新浪空间——与朋友开心分享网络新生活！</a>