<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Just had a look at the git commits for dvswitch and spotted this
comment from 11-Jan-2014:<br>
<br>
<meta name="qrichtext" content="1">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><!--StartFragment--><span
style=" font-family:'Courier'; font-size:9pt;"> Implement a
generic V4L2 dvsource</span></p>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Courier'; font-size:9pt;"> </span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Courier'; font-size:9pt;"> dvgrab can read from a device using video4linux, if that device supports</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Courier'; font-size:9pt;"> a DV output method. Many such devices do not.</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Courier'; font-size:9pt;"> </span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Courier'; font-size:9pt;"> This commit adds a "v4l2-raw" mode which calls avconv rather than</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Courier'; font-size:9pt;"> dvgrab; while requiring significantly more resources than dvgrab on the</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Courier'; font-size:9pt;"> dvsource host, this then allows for using any V4L2-supported device as</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Courier'; font-size:9pt;"> an input to dvswitch.</span><!--EndFragment--></pre>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<style type="text/css">
p, li { white-space: pre-wrap; }
</style><br>
I haven't tested it yet to see wether it's more efficient than what
we are currently using, but at least it's native to dvswitch.<br>
<br>
FYI avconv is part of libav (which is a fork of ffmpeg afaik)<br>
<br>
Regards,<br>
<br>
Euan.<br>
</body>
</html>