capture filter device and its
parameters (if the filter supports it) to a file.
If a file with the same name exists it will be overwritten.
</p>
</dd>
<dt>&lsquo;<samp>video_device_load</samp>&rsquo;</dt>
<dd><p>Load a video capture filter device from file instead of searching
it by name. It may load additional parameters too, if the filter
supports the serialization of its properties to.
To use this a video capture source has to be specified, but it can
be anything even fake one.
</p>
</dd>
<dt>&lsquo;<sam