content->audio.reset (new AudioContent (content.get()));
content->audio->add_stream (stream);
content->_video_frame_rate = 24;
film->set_video_frame_rate (24);
stream->_frame_rate = 48000;
content->audio.reset (new AudioContent (content.get()));
content->audio->add_stream (stream);
content->_video_frame_rate = 24;
film->set_video_frame_rate (24);
stream->_frame_rate = 48000;