}
+string
+subtitle_asset_filename (shared_ptr<dcp::SubtitleAsset> asset, int reel_index, int reel_count, optional<string> summary)
+{
+ return asset_filename(asset, "sub", reel_index, reel_count, summary);
+}
+
+
string
atmos_asset_filename (shared_ptr<dcp::AtmosAsset> asset, int reel_index, int reel_count, optional<string> summary)
{