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<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>This solution works for me also. I tested it also with audio and
it seems to be synchronized – which means the problem is solved.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thank you both, Mitchell and David.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-- <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Best regards,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Krzysztof Borowczyk<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal style='margin-left:35.4pt'><b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
gstreamer-devel [mailto:gstreamer-devel-bounces@lists.freedesktop.org] <b>On
Behalf Of </b>Mitchell Foley<br>
<b>Sent:</b> Wednesday, March 26, 2014 4:21 PM<br>
<b>To:</b> Discussion of the development of and with GStreamer<br>
<b>Subject:</b> Re: decklink plugin<o:p></o:p></span></p>
</div>
<p class=MsoNormal style='margin-left:35.4pt'><o:p> </o:p></p>
<div>
<p class=MsoNormal style='margin-left:35.4pt'>I've had problems using
xvideosink with decklinksrc, which might be what autovideosink is loading. For
me, this command works fine:<o:p></o:p></p>
<div>
<p class=MsoNormal style='margin-left:35.4pt'><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:35.4pt'><span style='font-size:9.0pt;
font-family:Consolas;color:black'>gst-launch-1.0 decklinksrc </span><span
style='font-size:9.0pt;font-family:Consolas;color:teal'>connection</span><b><span
style='font-size:9.0pt;font-family:Consolas;color:black'>=</span></b><span
style='font-size:9.0pt;font-family:Consolas;color:black'>HDMI </span><span
style='font-size:9.0pt;font-family:Consolas;color:teal'>mode</span><b><span
style='font-size:9.0pt;font-family:Consolas;color:black'>=</span></b><span
style='font-size:9.0pt;font-family:Consolas;color:black'>11 </span><span
style='font-size:9.0pt;font-family:Consolas;color:teal'>name</span><b><span
style='font-size:9.0pt;font-family:Consolas;color:black'>=</span></b><span
style='font-size:9.0pt;font-family:Consolas;color:black'>demux demux. !
alsasink </span><span style='font-size:9.0pt;font-family:Consolas;color:teal'>sync</span><b><span
style='font-size:9.0pt;font-family:Consolas;color:black'>=</span></b><span
style='font-size:9.0pt;font-family:Consolas;color:#0086B3'>false </span><span
style='font-size:9.0pt;font-family:Consolas;color:black'>demux. ! queue !
xvimagesink </span><span style='font-size:9.0pt;font-family:Consolas;
color:teal'>sync</span><b><span style='font-size:9.0pt;font-family:Consolas;
color:black'>=</span></b><span style='font-size:9.0pt;font-family:Consolas;
color:#0086B3'>false</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:35.4pt'><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:35.4pt'>-Mitch<o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:
12.0pt;margin-left:35.4pt'><o:p> </o:p></p>
<div>
<p class=MsoNormal style='margin-left:35.4pt'>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:<o:p></o:p></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:35.4pt'><span style='color:#1F497D'>Update:</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:35.4pt'><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;
margin-left:35.4pt'><span lang=EN-US style='color:#1F497D'>The queue problem
was that it connected to the audio output, I fixed it by running:<br>
<br>
gst-launch-1.0 decklinksrc name=d mode=9 connection=1 d. ! queue !
fakesink d. ! queue ! videoconvert ! autovideosink<br>
<br>
unfortunately the problem still persists – I get the playback at 1-2 frames per
second.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:35.4pt'><span lang=EN-US style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> gstreamer-devel [mailto:<a
href="mailto:gstreamer-devel-bounces@lists.freedesktop.org" target="_blank">gstreamer-devel-bounces@lists.freedesktop.org</a>]
<b>On Behalf Of </b>Krzysztof Borowczyk<br>
<b>Sent:</b> Wednesday, March 26, 2014 10:44 AM<br>
<b>To:</b> 'Discussion of the development of and with GStreamer'<br>
<b>Subject:</b> RE: decklink plugin</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'> <o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span style='color:#1F497D'>[...]</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'> <o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'>Try turning on debug for the decklinksrc:<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'> GST_DEBUG=decklinksrc:6 gst-launch-1.0 ...<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'>That will tell you if it is having to drop frames because
the pipeline<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'>isn't receiving them fast enough. If that's the case try
adding a queue<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'>after decklinksrc (?).<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span style='color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US>I tried with these logs, and decklink
doesn’t say anything about dropping frames – quite the opposite, it reports
Valid Frame (log.txt):</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US style='color:#1F497D'><br>
:00:02.684938080 2552 0x8163120
DEBUG
decklinksrc capture.cpp:114:VideoInputFrameArrived:<decklinksrc0> Frame
received [No timecode] - Valid Frame - Size: 4147200 bytes</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US style='color:#1F497D'>0:00:02.688372967
2552 0x815dbb0
DEBUG
decklinksrc gstdecklinksrc.cpp:746:gst_decklink_src_task:<decklinksrc0>
task</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US style='color:#1F497D'>0:00:02.718353360
2552 0x8163120
DEBUG
decklinksrc capture.cpp:114:VideoInputFrameArrived:<decklinksrc0> Frame
received [No timecode] - Valid Frame - Size: 4147200 bytes</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;
margin-left:70.8pt'><span lang=EN-US style='color:#1F497D'>0:00:02.721746566
2552 0x815dbb0
DEBUG
decklinksrc gstdecklinksrc.cpp:746:gst_decklink_src_task:<decklinksrc0>
task</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US>although, I’m not sure if the “No
timecode” is expected here? Maybe that’s the reason for drops?</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US style='color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'><span lang=EN-US>You could also try "autovideosink
sync=false" and see what happens (you</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'>probably don't want to do that in practice, but trying it
might give some<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'>insight as to what's causing your low framerate).<o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US>Setting the sync to false helps. The
playback is not 100% smooth, but it’s much better.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US style='color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'><span lang=EN-US>Maybe also try with fakesink, to
eliminate videoconvert and your video</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:106.2pt'>sink from the equation: gst-launch-1.0 decklinksrc
mode=... ! fakesink<o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US>This also seems to help, there are no
messages about dropped buffers.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US>I don’t know if the queue solution would
help, because GStreamer does not want to connect it (log2.txt):</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US>WARNING: erroneous pipeline: could not
link queue0 to videoconvert0</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US>Any idea why it would do so?</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US>-- </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:70.8pt'><span lang=EN-US>Best regards,<br>
Krzysztof Borowczyk</span><o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:
12.0pt;margin-left:35.4pt'><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><o:p></o:p></p>
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<p class=MsoNormal style='margin-left:35.4pt'><o:p> </o:p></p>
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