ment">%                                   according to the value chosen here</span>
0075 <span class="comment">%                                   (or a default value if none is</span>
0076 <span class="comment">%                                   specified here).</span>
0077 <span class="comment">%</span>
0078 <span class="comment">%     codec             X      X    A string specifying the encoder to</span>
0079 <span class="comment">%                                   use.  The exact set of possible