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<p>I am trying to combine 2 video streams. One from my laptop camera
and one from an external webcam. I'm using the following pipeline
and getting very choppy results. Neither my CPU or GPU seem to be
working hard. Any ideas how to make this less choppy?</p>
<p> </p>
<pre class="western" style="margin-bottom: 0.5cm"><strong>./gst-launch-1.0 v4l2src device=/dev/video</strong><strong>4</strong><strong> ! videoscale ! videoconvert ! video/x-raw,format=YUY2, framerate=30/1, width=</strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>640</b></font></font></strong><strong>, height=</strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>480</b></font></font></strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>! </b></font></font></strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>alpha</b></font></font></strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b> </b></font></font></strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>alpha=1</b></font></font></strong><strong> ! videobox border-alpha=0 left=-640 !
videomixer name=Mix ! videoconvert ! autovideosink v4l2src device=/dev/video</strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>2</b></font></font></strong><strong> ! videoscale ! videoconvert ! video/x-raw, format=YUY2, framerate=30/1, width=</strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>640</b></font></font></strong><strong>, height=</strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>480</b></font></font></strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>! </b></font></font></strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>alpha</b></font></font></strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b> </b></font></font></strong><strong><font face="Liberation Mono, monospace"><font style="font-size: 10pt" size="2"><b>alpha=1</b></font></font></strong><strong> ! videobox border-alpha=0 right=-640 ! Mix.</strong></pre>
<p>Thanks,</p>
<p>Jim<br>
</p>
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