Try adding sync=true to the fakesink element:<div><br></div><div>gst-launch -v videotestsrc num-buffers=10 ! videorate force-fps="1/1" ! "video/x-raw-yuv,framerate=1/1" ! fakesink sync=true<br><br><div class="gmail_quote"> On Fri, Jul 27, 2012 at 11:04 AM, Demeyer Jonathan <span dir="ltr"><<a href="mailto:Jonathan.Demeyer@macq.eu" target="_blank">Jonathan.Demeyer@macq.eu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <u></u> <div> <div dir="ltr" align="left"><font face="Arial"><span>Tanks Matt for the reply.</span></font></div> <div dir="ltr" align="left"><font face="Arial"><span></span></font> </div> <div dir="ltr" align="left"><font face="Arial"><span>This didn't work for me as you can see :</span></font></div> <div dir="ltr" align="left"><font face="Arial"><span></span></font> </div> <div dir="ltr" align="left"><font face="Arial"><span>$ date; gst-launch -v videotestsrc num-buffers=10 ! videorate force-fps="1/1" ! "video/x-raw-yuv,framerate=1/1" ! fakesink; date<br> Fri Jul 27 17:55:42 CEST 2012<br> Setting pipeline to PAUSED ...<br> /GstPipeline:pipeline0/GstVideoTestSrc:videotestsrc0.GstPad:src: caps = video/x-raw-yuv, framerate=(fraction)1/1, format=(fourcc)YUY2, color-matrix=(string)sdtv, chroma-site=(string)mpeg2, width=(int)320, height=(int)240<br> Pipeline is PREROLLING ...<br> /GstPipeline:pipeline0/GstVideoRate:videorate0.GstPad:src: caps = video/x-raw-yuv, framerate=(fraction)1/1, format=(fourcc)YUY2, color-matrix=(string)sdtv, chroma-site=(string)mpeg2, width=(int)320, height=(int)240<br> /GstPipeline:pipeline0/GstVideoRate:videorate0.GstPad:sink: caps = video/x-raw-yuv, framerate=(fraction)1/1, format=(fourcc)YUY2, color-matrix=(string)sdtv, chroma-site=(string)mpeg2, width=(int)320, height=(int)240<br> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-raw-yuv, framerate=(fraction)1/1, format=(fourcc)YUY2, color-matrix=(string)sdtv, chroma-site=(string)mpeg2, width=(int)320, height=(int)240<br> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = video/x-raw-yuv, framerate=(fraction)1/1, format=(fourcc)YUY2, color-matrix=(string)sdtv, chroma-site=(string)mpeg2, width=(int)320, height=(int)240<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0.GstPad:sink: caps = video/x-raw-yuv, framerate=(fraction)1/1, format=(fourcc)YUY2, color-matrix=(string)sdtv, chroma-site=(string)mpeg2, width=(int)320, height=(int)240<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "preroll ******* "<br> Pipeline is PREROLLED ...<br> Setting pipeline to PLAYING ...<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "event ******* (fakesink0:sink) E (type: 102, GstEventNewsegment, update=(boolean)false, rate=(double)1, applied-rate=(double)1, format=(GstFormat)GST_FORMAT_TIME, start=(gint64)0, stop=(gint64)-1, position=(gint64)0;) 0x9173750"<br> New clock: GstSystemClock<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:00.000000000, duration: 0:00:01.000000000, offset: 0, offset_end: 1, flags: 33 ro discont ) 0x9180760"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:01.000000000, duration: 0:00:01.000000000, offset: 1, offset_end: 2, flags: 1 ro ) 0xb6c01870"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:02.000000000, duration: 0:00:01.000000000, offset: 2, offset_end: 3, flags: 1 ro ) 0xb6c01930"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:03.000000000, duration: 0:00:01.000000000, offset: 3, offset_end: 4, flags: 1 ro ) 0xb6c019f0"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:04.000000000, duration: 0:00:01.000000000, offset: 4, offset_end: 5, flags: 1 ro ) 0xb6c01ab0"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:05.000000000, duration: 0:00:01.000000000, offset: 5, offset_end: 6, flags: 1 ro ) 0xb6c01b70"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:06.000000000, duration: 0:00:01.000000000, offset: 6, offset_end: 7, flags: 1 ro ) 0xb6c01c78"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:07.000000000, duration: 0:00:01.000000000, offset: 7, offset_end: 8, flags: 1 ro ) 0xb6c01d38"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:08.000000000, duration: 0:00:01.000000000, offset: 8, offset_end: 9, flags: 1 ro ) 0xb6c01b10"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "chain ******* (fakesink0:sink) (153600 bytes, timestamp: 0:00:09.000000000, duration: 0:00:01.000000000, offset: 9, offset_end: 10, flags: 1 ro ) 0xb6c01b70"<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = "event ******* (fakesink0:sink) E (type: 86, ) 0x9173750"<br> Got EOS from element "pipeline0".<br> Execution ended after 12853781 ns.<br> Setting pipeline to PAUSED ...<br> Setting pipeline to READY ...<br> /GstPipeline:pipeline0/GstFakeSink:fakesink0.GstPad:sink: caps = NULL<br> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = NULL<br> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = NULL<br> /GstPipeline:pipeline0/GstVideoRate:videorate0.GstPad:src: caps = NULL<br> /GstPipeline:pipeline0/GstVideoRate:videorate0.GstPad:sink: caps = NULL<br> /GstPipeline:pipeline0/GstVideoTestSrc:videotestsrc0.GstPad:src: caps = NULL<br> Setting pipeline to NULL ...<br> Freeing pipeline ...<br> Fri Jul 27 17:55:42 CEST 2012</span></font></div> <div><font face="Arial"><span></span></font> </div> <div><font face="Arial"><span>While :</span></font></div> <div><font face="Arial"><span>$ gst-inspect --gst-version<br> GStreamer Core Library version 0.10.36</span></font></div> <div dir="ltr" align="left"><br> </div> <div dir="ltr" align="left"><font face="Arial"><span>Any idea ?</span></font></div> <div dir="ltr" align="left"><font face="Arial"><span></span></font> </div> <div dir="ltr" align="left"><font face="Arial"><span>Thanks,</span></font></div> <div> </div> <div align="left"> <div align="left"><font face="Arial">Jonathan DEMEYER</font></div> </div> <div> </div> <br> <blockquote style="BORDER-LEFT:#000000 2px solid;PADDING-LEFT:5px;MARGIN-LEFT:5px;MARGIN-RIGHT:0px" dir="ltr"> <div dir="ltr" lang="en-us" align="left"> <hr> <font face="Tahoma"><b>From:</b> gstreamer-devel-bounces+jonathan.demeyer=<a href="mailto:macq.eu@lists.freedesktop.org" target="_blank">macq.eu@lists.freedesktop.org</a> [mailto:<a href="mailto:gstreamer-devel-bounces%2Bjonathan.demeyer" target="_blank">gstreamer-devel-bounces+jonathan.demeyer</a>=<a href="mailto:macq.eu@lists.freedesktop.org" target="_blank">macq.eu@lists.freedesktop.org</a>] <b>On Behalf Of </b>Matt Pekar<br> <b>Sent:</b> mercredi 25 juillet 2012 15:08<br> <b>To:</b> Discussion of the development of and with GStreamer<br> <b>Subject:</b> Re: constant framerate<br> </font><br> </div><div><div class="h5"> <div></div> videorate has a "force-fps" attribute: <div><br> </div> <div>videorate force-fps=1<br> <div><br> </div> <div><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-videorate.html" target="_blank">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-videorate.html</a><br> <br> <div class="gmail_quote">On Wed, Jul 25, 2012 at 5:00 AM, Demeyer Jonathan <span dir="ltr"> <<a href="mailto:Jonathan.Demeyer@macq.eu" target="_blank">Jonathan.Demeyer@macq.eu</a>></span> wrote:<br> <blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote"> <u></u> <div> <div><font face="Arial"><span>Hello,</span></font></div> <div><font face="Arial"><span></span></font> </div> <div><font face="Arial"><span>I'm trying to test a pipeline (test performance of an element) and for this I want to have a constant image flow.</span></font></div> <div><font face="Arial"><span>I've try the videorate element like this :</span></font></div> <div><font face="Arial"><span>gst-launch -v filesrc location="Pictures/image.jpg" ! jpegdec ! imagefreeze ! videorate ! "video/x-raw-yuv,framerate=1/1" ! fakesink</span></font></div> <div><font face="Arial"><span></span></font> </div> <div><font face="Arial"><span>But logs tells me that images come when the system is ready instead of each second (but timestamps are OK). Actually I see no difference between using videorate or not.</span></font></div> <div><font face="Arial"><span>Do I need to use another element or is it a flag that i've missing ?</span></font></div> <div><font face="Arial"><span></span></font> </div> <div><font face="Arial"><span>Thanks in advance,</span></font></div> <div><font face="Arial"></font> </div> <div align="left"> <div align="left"><b><font face="Arial">Jonathan DEMEYER</font></b></div> </div> <div> </div> </div> <br> _______________________________________________<br> gstreamer-devel mailing list<br> <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a><br> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> <br> </blockquote> </div> <br> </div> </div> </div></div></blockquote> </div> <br>_______________________________________________<br> gstreamer-devel mailing list<br> <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a><br> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> <br></blockquote></div><br></div>