T_MPEG_4">MUXER_OUTPUT_MPEG_4</a></code> so that a video player can
 choose the proper orientation for playback. Note that some video players
 may choose to ignore the composition matrix in a video during playback.
 By default, the rotation degree is 0.</p></p></div>
  <div class="jd-tagdata">
      <h5 class="jd-tagtitle">Parameters</h5>
      <table class="jd-tagtable">
        <tr>
          <th>degrees</td>
          <td>the angle to be rotated clockwise in degrees.
 The supported angles are 0, 90, 180,