Improve handling of image subtitle IDs in XML (DoM bug #1965)

[libdcp.git] / src / subtitle_asset_internal.cc

diff --git a/src/subtitle_asset_internal.cc b/src/subtitle_asset_internal.cc
index 7b9e18e90e7aa11b11f296a2e0ef8e11ebc23c59..25e03f0bc64da0ae7fedef90e78dbe581fcfe94a 100644 (file)
--- a/src/subtitle_asset_internal.cc
+++ b/src/subtitle_asset_internal.cc
@@ -239,7 +239,7 @@ order::Image::as_xml (xmlpp::Element* parent, Context& context) const
 
        position_align (e, context, _h_align, _h_position, _v_align, _v_position);
        if (context.standard == SMPTE) {
-               e->add_child_text (_id);
+               e->add_child_text ("urn:uuid:" + _id);
        } else {
                e->add_child_text (_id + ".png");
        }