Make sure main picture active area values are even (#2392).

[dcpomatic.git] / src / lib / writer.cc

diff --git a/src/lib/writer.cc b/src/lib/writer.cc
index 2dd46f0b2324f4516364b319ab2a1561542cba26..2e732c280277fd44938ff75482c7eaad87e8759a 100644 (file)
--- a/src/lib/writer.cc
+++ b/src/lib/writer.cc
@@ -676,8 +676,8 @@ Writer::finish (boost::filesystem::path output_dcp)
 
        auto active_area = film()->active_area();
        if (active_area.width > 0 && active_area.height > 0) {
-               /* It's not allowed to have a zero active area width or height */
-               cpl->set_main_picture_active_area (active_area);
+               /* It's not allowed to have a zero active area width or height, and the sizes must be multiples of 2 */
+               cpl->set_main_picture_active_area({ active_area.width & ~1, active_area.height & ~1});
        }
 
        auto sl = film()->subtitle_languages().second;