+
+void
+Content::use_template (shared_ptr<const Content> c)
+{
+ if (video && c->video) {
+ video->use_template (c->video);
+ }
+ if (audio && c->audio) {
+ audio->use_template (c->audio);
+ }
+ if (subtitle && c->subtitle) {
+ subtitle->use_template (c->subtitle);
+ }
+}