switch (video_frame_type ()) {
case VIDEO_FRAME_TYPE_2D:
case VIDEO_FRAME_TYPE_3D_ALTERNATE:
+ case VIDEO_FRAME_TYPE_3D_LEFT:
+ case VIDEO_FRAME_TYPE_3D_RIGHT:
return s;
case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
return libdcp::Size (s.width / 2, s.height);