</tr>
    <tr><td valign="top"></td><td valign="top"><em>_yfrag0</em>&nbsp;</td><td>The Y coordinate of the first row of 8x8 fragments decoded. Multiply this by 8 to obtain the pixel row number in the luma plane. If the chroma planes are subsampled in the Y direction, this will always be divisible by two. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>_yfrag_end</em>&nbsp;</td><td>The Y coordinate of the first row of 8x8 fragments past the newly decoded section. If the chroma planes are subsa