extern AVInputFormat mp3_demuxer;
extern AVOutputFormat mp2_muxer;
extern AVOutputFormat mp3_muxer;
+extern AVInputFormat mpc_demuxer;
extern AVOutputFormat mpeg1system_muxer;
extern AVOutputFormat mpeg1vcd_muxer;
extern AVOutputFormat mpeg2vob_muxer;
extern AVOutputFormat yuv4mpegpipe_muxer;
extern AVInputFormat yuv4mpegpipe_demuxer;
extern AVInputFormat tiertexseq_demuxer;
+extern AVInputFormat x11_grab_device_demuxer;
/* raw.c */
int pcm_read_seek(AVFormatContext *s,