<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1492642776734_9180" dir="ltr"><span id="yui_3_16_0_ym19_1_1492642776734_9301">Some sink elements have a "sync" property that if you set it to false will dramatically improve the latency. My version of GStreamer doesn't have any of the gtk sinks so I don't know if they have it or not, but autovideosink does so you could test with that.</span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1492642776734_9179"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1492642776734_9163" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;" id="yui_3_16_0_ym19_1_1492642776734_9162"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1492642776734_9161"> <div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9160"> <font size="2" face="Arial" id="yui_3_16_0_ym19_1_1492642776734_9178"> <hr size="1" id="yui_3_16_0_ym19_1_1492642776734_9223"> <b><span style="font-weight:bold;">From:</span></b> Emmanuel Pacaud <emmanuel.pacaud@lapp.in2p3.fr><br> <b><span style="font-weight: bold;">To:</span></b> Discussion of the development of and with GStreamer <gstreamer-devel@lists.freedesktop.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, April 19, 2017 6:47 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> low latency appsrc pipeline<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1492642776734_9165"><br><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9164">Hi,<br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9177"><br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9166">In a camera video viewer I'm developping, I'm trying to achiveve the <br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9167">lowest latency possible for the video output.<br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9168"><br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9176">The pipeline I'm using is based on appsrc, do some color conversion, <br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9169">then display the output with gtksink or gtkglsink.<br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9170"><br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9175">What I would like is a pipeline that displays the frames as they are <br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9171">acquired from the camera. What would be the best way to achieve this <br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9172">result ?<br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9173"><br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9174">Currently, for some unkwnon reason, there is sometime around 1 second <br></div><div dir="ltr">or more of latency.<br></div><div dir="ltr"><br></div><div dir="ltr">For reference, the corresponding code is here:<br></div><div dir="ltr"><br></div><div dir="ltr"><a href="https://github.com/AravisProject/aravis/blob/master/viewer/arvviewer.c#L880" target="_blank">https://github.com/AravisProject/aravis/blob/master/viewer/arvviewer.c#L880</a><br></div><div dir="ltr"><br></div><div dir="ltr">Thanks.<br></div><div dir="ltr"><br></div><div dir="ltr"> Cheers,<br></div><div dir="ltr"><br></div><div dir="ltr"> Emmanuel.<br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9315">gstreamer-devel mailing list<br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9316"><a ymailto="mailto:gstreamer-devel@lists.freedesktop.org" href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a><br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1492642776734_9317"><a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br></div><br><br></div> </div> </div> </div></div></body></html>