+ AVCodecContext* subtitle_codec_context () const;
+ dcpomatic::ContentTime pts_offset (
+ std::vector<boost::shared_ptr<FFmpegAudioStream> > audio_streams, boost::optional<dcpomatic::ContentTime> first_video, double video_frame_rate
+ ) const;
+
+ static FFmpegSubtitlePeriod subtitle_period (AVSubtitle const & sub);
+