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<font face="Helvetica, Arial, sans-serif">The video is decoded as:<br>
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<p><span style="font-size: 9.000000pt; font-family:
'Helvetica'">video/x-raw format: Y42B</span><span
style="font-size: 9.000000pt; font-family: 'Helvetica'">
width: 720
height: 576 interlace-mode: mixed
pixel-aspect-ratio: 16/15</span><span style="font-size:
9.000000pt; font-family: 'Helvetica'"> chroma-site: dv
colorimetry: bt601 framerate: 25/1<br>
</span></p>
<p><span style="font-size: 9.000000pt; font-family:
'Helvetica'"><big><font face="Helvetica, Arial,
sans-serif">The interlace mode is detected as 'mixed'
not 'interleaved'. The pipeline errors with 'general
stream error, reason: not-negotiated'.<br>
</font></big></span></p>
<p><span style="font-size: 9.000000pt; font-family:
'Helvetica'"><big><font face="Helvetica, Arial,
sans-serif">I can't test the audio just now but the
GStreamer version is 1.8 from the pre-compiled OSX
packages, the decklink plugin is dated 2016-03-24.<br>
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<div class="moz-cite-prefix">On 23/05/2016 5:27 PM, Sebastian Dröge
wrote:<br>
</div>
<blockquote cite="mid:1463990239.2356.110.camel@centricular.com"
type="cite">
<pre wrap="">On Fr, 2016-05-20 at 21:30 +0930, Dave Johnstone wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi,
I am trying to play an SD interlaced file out on a Blackmagic Decklink card but having troubles. I cannot get the following pipeline to link -
gst-launch-1.0 uridecodebin uri=<a class="moz-txt-link-freetext" href="file:///Volumes/Video/race.mov">file:///Volumes/Video/race.mov</a> ! autovideoconvert ! decklinkvideosink mode=3
If I deinterlace then interlace with
uridecodebin uri=<a class="moz-txt-link-freetext" href="file:///Volumes/Video/race.mov">file:///Volumes/Video/race.mov</a> ! deinterlace ! autovideoconvert ! interlace field-pattern=2:2 ! videoscale ! videorate ! decklinkvideosink mode=3
This works but if I add audio
</pre>
</blockquote>
<pre wrap="">
What are the caps the decoder is outputting? Is it marked as
interlaced, why does linking fail exactly? That is, how are the caps
incompatible?
</pre>
<blockquote type="cite">
<pre wrap="">uridecodebin uri=<a class="moz-txt-link-freetext" href="file:///Volumes/Video/race.mov">file:///Volumes/Video/race.mov</a> name=decoder decoder. ! deinterlace ! autovideoconvert ! interlace field-pattern=2:2 ! videoscale ! videorate ! decklinkvideosink mode=3 decoder. ! audioconvert ! decklinkaudiosink
The audio plays at the correct speed and pitch but stutters as if half the samples are missing.
</pre>
</blockquote>
<pre wrap="">
If you let the video go to a fakesink, and add a videotestsrc in front
of decklinkvideosink, is the audio still stuttering? Is the audio also
stuttering with other audio sinks?
Which version of GStreamer and the decklink plugin are you using?
</pre>
<blockquote type="cite">
<pre wrap="">What is the correct pipeline for playing interlaced files to a Decklink card in interlaced mode?
</pre>
</blockquote>
<pre wrap="">
You should be able to pass through the interlaced video without
deinterlacing/interlacing, assuming that it is correctly detected as
interlaced content and the resolution and framerate is correct.
</pre>
<blockquote type="cite">
<pre wrap="">As for HD, even the above trick does not work.
</pre>
</blockquote>
<pre wrap="">
How does HD fail even more?
</pre>
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<pre wrap="">_______________________________________________
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</pre>
</blockquote>
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