You can use like this Example in my code: gst-launch -v dvbsrc do-timestamp=true modulation=AUTO trans-mode=AUTO <div class="im">bandwidth=AUTO frequency=586000000 code-rate-lp=AUTO guard=AUTO </div>hierarchy=NONE pids=16:17:18:110:120:130:140 ! flutsdemux name=demux program-number=257 ! queue max-size-buffers=0 max-size-time=0 ! mpeg2dec ! xvimagesink sync=true demux. ! queue max-size-buffers=0 max-size-time=0 ! mad ! alsasink sync=true <div class="gmail_quote">On Wed, May 19, 2010 at 12:39 AM, Rob Clark <<a href="mailto:rob@ti.com">rob@ti.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">sync=false disables A/V sync.. in your case, you might get weirdness if you try and synchronize video preview display to audio capture... so you probably want sync=false, and it should at least not hurt. If you are getting messages about timestamping problems and xvimagesink dropping frames, then try sync=false BR, -R <div><div></div><div class="h5"> On 05/18/2010 01:56 PM, Daniel Drake wrote: > Hi, > > Google shows many examples of using the xvimagesink element with > sync=false but I can't find any explanation of what this actually does > and why someone might want to use it. The GstBaseSink documentation > only has 1 line on this property and it isn't very enlightening. > > What does it do? > > In OLPC's Record activity we use xvimagesink for a live video preview > of the photograph which is about to be taken, or for a live preview of > the video that we are currently recording to disk. Given that we're > only talking about a video preview, we're suspecting that sync=false > is something that we'd want, assuming that it results in xvimagesink > being able to display frames at times which are most convenient > without having to worry about the clock, resulting in less resource > usage on the system. Is there any truth here? > > Thanks, > Daniel > > ------------------------------------------------------------------------------ > > _______________________________________________ > 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> > ------------------------------------------------------------------------------ _______________________________________________ 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> </div></div></blockquote></div> -- Thanx & Regards Ajay Gautam +91-9717785580