+ /* Align our subtitles to the bottom of the screen, because if we are making a SMPTE
+ * DCP and the projection system uses the wrong standard to interpret vertical position,
+ * a bottom-aligned subtitle will be less wrong than a top-aligned one. This is because
+ * in the top-aligned case the difference will be the distance between bbox top an
+ * baseline, but in the bottom-aligned case the difference will be between bbox bottom
+ * and baseline (which is shorter).
+ */
+ v_align = dcp::VAlign::BOTTOM;