AVSampleFormat audio_sample_format (std::shared_ptr<FFmpegAudioStream> stream) const;
int bytes_per_audio_sample (std::shared_ptr<FFmpegAudioStream> stream) const;
std::shared_ptr<FFmpegAudioStream> audio_stream_from_index (int index) const;
AVSampleFormat audio_sample_format (std::shared_ptr<FFmpegAudioStream> stream) const;
int bytes_per_audio_sample (std::shared_ptr<FFmpegAudioStream> stream) const;
std::shared_ptr<FFmpegAudioStream> audio_stream_from_index (int index) const;
void process_audio_frame (std::shared_ptr<FFmpegAudioStream> stream);
bool decode_and_process_video_packet (AVPacket* packet);
void process_audio_frame (std::shared_ptr<FFmpegAudioStream> stream);
bool decode_and_process_video_packet (AVPacket* packet);
void process_ass_subtitle (std::string ass, dcpomatic::ContentTime from);
void maybe_add_subtitle ();
void process_ass_subtitle (std::string ass, dcpomatic::ContentTime from);
void maybe_add_subtitle ();