<div dir="ltr"><div><div><div><div>Regarding decklinksrc audio drift.<br><br></div>According to Ross Currie <a href="https://sourceforge.net/p/snowmix/discussion/Snowmix_Support_Forum/thread/e311cbe1/">https://sourceforge.net/p/snowmix/discussion/Snowmix_Support_Forum/thread/e311cbe1/</a> there are audio drift issues with some driver versions.<br><br><div style="margin-left:40px">"I have confirmed that the issue was a bug in the decklink card's driver.<br>
10.3.4 has the audio drift issue.<br>
10.3.7 works well.<br>
10.4.1 is just ridiculously broken."<br></div><br></div>So it may not be in GStreamer.<br><br></div>Regards<br></div>Peter Maersk-Moller<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Mar 31, 2016 at 8:20 AM, Sebastian Dröge <span dir="ltr"><<a href="mailto:sebastian@centricular.com" target="_blank">sebastian@centricular.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Di, 2016-03-29 at 02:16 -0700, Vinod K wrote:<br>
> All,<br>
><br>
> I have BMD 4k card which supports auto mode detection(mode=0). To capture<br>
> raw audio and video I am using decklinkvideosrc and decklinkaudiosrc. I am<br>
> facing AV ouof sync issue, this is seen with both Auto mode and 756i50<br>
> followin are my observation. <br>
><br>
> 1. For mode 0 (Auto detection) audio and video are out of sync starting from<br>
> the beginning.<br>
> 2. For mode 3 audio and video are out of sync after 5 minutes. Which builds<br>
> up over the time?<br>
><br>
> What could be the problem ??<br>
<br>
Which GStreamer version are you using? Can you get a debug log with<br>
GST_DEBUG=3,decklink*:6 and report this in Bugzilla?<br>
<br>
This commit here might fix it:<br>
<a href="https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/?id=0d3cd8274907bef05a8245edd86203b7adcdca11" rel="noreferrer" target="_blank">https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/?id=0d3cd8274907bef05a8245edd86203b7adcdca11</a><br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Sebastian Dröge, Centricular Ltd · <a href="http://www.centricular.com" rel="noreferrer" target="_blank">http://www.centricular.com</a><br>
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<br></blockquote></div><br></div>