extern AVInputFormat ff_alsa_demuxer;
extern AVOutputFormat ff_alsa_muxer;
extern AVInputFormat ff_android_camera_demuxer;
+extern AVOutputFormat ff_audiotoolbox_muxer;
extern AVInputFormat ff_avfoundation_demuxer;
extern AVInputFormat ff_bktr_demuxer;
extern AVOutputFormat ff_caca_muxer;