Edu,<div>Well there are no dropped frames now, your frame rates all match! Your original problem was different. Using the sync option is fine, whatever works. </div><div>Mike Mitchell <div class="gmail_quote">On Thu, Oct 6, 2011 at 4:01 AM, Eduardo Herraiz <<a href="mailto:edu@ifisc.uib-csic.es">edu@ifisc.uib-csic.es</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> Hi, Looking for another solutions I tried with the option "sync=false" in the xvimagesink : gst-launch-0.10 \ videomixer2 name=mix ! video/x-raw-yuv,width=1536,height=768,framerate=25/1 ! xvimagesink sync=false \ v4l2src device="/dev/video0" ! video/x-raw-yuv,width=640,height=480 ! videoscale ! video/x-raw-yuv,width=512,height=384 ! ffmpegcolorspace ! \ videobox border-alpha=0 top=-384 left=0 ! videorate silent=FALSE ! video/x-raw-yuv,framerate=25/1 ! queue ! mix. \ v4l2src device="/dev/video1" ! video/x-raw-yuv,width=720,height=576 ! videoscale ! video/x-raw-yuv,width=512,height=384 ! ffmpegcolorspace ! \ videobox border-alpha=0 top=0 left=0 ! videorate silent=FALSE ! video/x-raw-yuv,framerate=25/1 ! queue ! mix. \ v4l2src device="/dev/video2" ! video/x-raw-yuv,width=1024,height=768 ! ffmpegcolorspace ! \ videobox border-alpha=0 top=0 left=-512 ! videorate silent=FALSE ! video/x-raw-yuv,framerate=25/1 ! queue ! mix. It works with a high framerate!!, but reading about sync option seems to be a debugging option: <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-ximagesink.html" target="_blank">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-ximagesink.html</a> I can't see any information about dropped or added frames with videorate. Can I use this option for a production application? What's wrong with this? Bests Edu ***************************************************************** Edu Herraiz - Web developer <a href="http://www.eduherraiz.com" target="_blank">http://www.eduherraiz.com</a> IFISC email: <a href="mailto:edu@ifisc.uib-csic.es">edu@ifisc.uib-csic.es</a> ***************************************************************** _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div> </div>