<div dir="ltr">I've had problems using xvideosink with decklinksrc, which might be what autovideosink is loading. For me, this command works fine:<div> </div><div>gst-launch-1.0 decklinksrc connection=HDMI mode=11 name=demux demux. ! alsasink sync=false demux. ! queue ! xvimagesink sync=false </div><div> </div><div>-Mitch</div></div><div class="gmail_extra"> <div class="gmail_quote">On Wed, Mar 26, 2014 at 6:24 AM, Krzysztof Borowczyk <<a href="mailto:k.borowczyk@samsung.com" target="_blank">k.borowczyk@samsung.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div lang="PL" link="blue" vlink="purple" style="word-wrap:break-word"> <div> Update: The queue problem was that it connected to the audio output, I fixed it by running: gst-launch-1.0 decklinksrc name=d mode=9 connection=1 d. ! queue ! fakesink d. ! queue ! videoconvert ! autovideosink unfortunately the problem still persists – I get the playback at 1-2 frames per second. <div> <div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0cm 0cm"> From: gstreamer-devel [mailto:<a href="mailto:gstreamer-devel-bounces@lists.freedesktop.org" target="_blank">gstreamer-devel-bounces@lists.freedesktop.org</a>] On Behalf Of Krzysztof Borowczyk Sent: Wednesday, March 26, 2014 10:44 AM To: 'Discussion of the development of and with GStreamer' Subject: RE: decklink plugin </div> </div><div><div class="h5"> <div> [...] </div> <div> </div> <div> <div> Try turning on debug for the decklinksrc: </div> <div> </div> <div> GST_DEBUG=decklinksrc:6 gst-launch-1.0 ... </div> <div> </div> <div> That will tell you if it is having to drop frames because the pipeline </div> <div> isn't receiving them fast enough. If that's the case try adding a queue </div> <div> after decklinksrc (?). </div> <div> I tried with these logs, and decklink doesn’t say anything about dropping frames – quite the opposite, it reports Valid Frame (log.txt): :00:02.684938080 2552 0x8163120 DEBUG decklinksrc capture.cpp:114:VideoInputFrameArrived:<decklinksrc0> Frame received [No timecode] - Valid Frame - Size: 4147200 bytes 0:00:02.688372967 2552 0x815dbb0 DEBUG decklinksrc gstdecklinksrc.cpp:746:gst_decklink_src_task:<decklinksrc0> task 0:00:02.718353360 2552 0x8163120 DEBUG decklinksrc capture.cpp:114:VideoInputFrameArrived:<decklinksrc0> Frame received [No timecode] - Valid Frame - Size: 4147200 bytes 0:00:02.721746566 2552 0x815dbb0 DEBUG decklinksrc gstdecklinksrc.cpp:746:gst_decklink_src_task:<decklinksrc0> task although, I’m not sure if the “No timecode” is expected here? Maybe that’s the reason for drops? </div> <div> <div> You could also try "autovideosink sync=false" and see what happens (you </div> <div> probably don't want to do that in practice, but trying it might give some </div> <div> insight as to what's causing your low framerate). </div> </div> <div> Setting the sync to false helps. The playback is not 100% smooth, but it’s much better. </div> <div> Maybe also try with fakesink, to eliminate videoconvert and your video </div> <div> sink from the equation: gst-launch-1.0 decklinksrc mode=... ! fakesink </div> </div> <div> This also seems to help, there are no messages about dropped buffers. I don’t know if the queue solution would help, because GStreamer does not want to connect it (log2.txt): WARNING: erroneous pipeline: could not link queue0 to videoconvert0 Any idea why it would do so? -- Best regards, Krzysztof Borowczyk </div> </div></div></div> </div> _______________________________________________ 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>