_playlist_change_connection = _playlist->Change.connect (bind (&Player::playlist_change, this, _1));
_playlist_content_change_connection = _playlist->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
set_video_container_size (_film->frame_size ());
_playlist_change_connection = _playlist->Change.connect (bind (&Player::playlist_change, this, _1));
_playlist_content_change_connection = _playlist->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
set_video_container_size (_film->frame_size ());