<pre>try gst-launch filesrc -v location=/video/test.mp4 ! mfw_mp4demuxer name=demux demux. ! mfw_vpudecoder codec-type=std_mpeg4 ! fakesink If it is OK, it is video sink error. Otherwise, decoder has something wrong. Also, add " --gst-debug=2" at the end of cmd line may print more log message. </pre>or <pre>gst-launch filesrc -v location=/video/test.mp4 ! mfw_mp4demuxer name=demux demux. ! mfw_vpudecoder codec-type=std_mpeg4 ! mfw_v4lsink --gst-debug= mfw_mp4demuxer:4,mfw_v4lsink:4 </pre> I am not sure it is mfw_vpudecoder and mfw_v4lsink in debug list, you can find it with gst-inspect --gst-debug-help | grep vpudecoder <div class="gmail_quote">2008/12/15 Wierd O <<a href="mailto:wierdo_b@hotmail.com">wierdo_b@hotmail.com</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div class="Wj3C7c"> <div> <pre>Hi all, I'm working to make Video streaming working on my iMX27 board and encountered this problem. ############################################################ mx27# gst-launch filesrc -v location=/video/test.mp4 ! mfw_mp4demuxer name=demux demux. ! mfw_vpudecoder codec-type=std_mpeg4 ! mfw_v4lsink demuxi. & 1611 mx27# Setting pipeline to PAUSED ... Pipeline is PREROLLING ... /pipeline0/mfwgstvpu_dec0.sink: caps = video/mpeg, mpegversion=(int)4, systemstream=(int)0, height=(int)240, width=(int)320, framerate=(fraction)24999/1000 /pipeline0/mfwgstvpu_dec0.sink: caps = video/mpeg, mpegversion=(int)4, systemstream=(int)0, height=(int)240, width=(int)320, framerate=(fraction)24999/1000 WARNING: from element /pipeline0/demux: pads are not negotiated! Additional debug info: audio pads are not negotiated! /pipeline0/mfwgstvpu_dec0.src: caps = video/x-raw-yuv, format=(fourcc)I420, width=(int)320, height=(int)240, pixel-aspect-ratio=(fraction)1/1, num-buffers-required=(int)3 Unable to open /dev/v4l/video16 ERROR: from element /pipeline0/mfwgstvpu_dec0: fatal error Additional debug info: Allocation of the Frame Buffers Failed ERROR: pipeline doesn't want to preroll. Setting pipeline to NULL ... /pipeline0/mfwgstvpu_dec0.src: caps = NULL /pipeline0/mfwgstvpu_dec0.sink: caps = NULL /pipeline0/demux.audio/mpeg: caps = NULL /pipeline0/demux.video_00: caps = NULL FREEING pipeline ... ############################################################ I am trying to stream a video using imx27 but i have a problem in streaming using gstreamer. The kernel I'm using is the one that Freescale gives for iMX27 av.board and it's a 2.6.22 with iMX27 patches from Freescale. Any kind of help is appreciated! W.</pre> <hr>Express yourself instantly with MSN Messenger! <a href="http://clk.atdmt.com/AVE/go/onm00200471ave/direct/01/" target="_blank">MSN Messenger</a></div> </div></div> ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you.  Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at <a href="http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/" target="_blank">http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </blockquote></div>