d format is not supported, a list of available formats is given
and the first one in this list is used instead. Available pixel formats are:
<code>monob, rgb555be, rgb555le, rgb565be, rgb565le, rgb24, bgr24, 0rgb, bgr0, 0bgr, rgb0,
 bgr48be, uyvy422, yuva444p, yuva444p16le, yuv444p, yuv422p16, yuv422p10, yuv444p10,
 yuv420p, nv12, yuyv422, gray</code>
</p>
</dd>
<dt>&lsquo;<samp>-framerate</samp>&rsquo;</dt>
<dd><p>Set the grabbing frame rate. Default is <code>ntsc</code>, corresponding to a
frame rate of <