libavformat/mpeg.c:507: error: Uninitialized Value
  The value read from dvdaudio_substream_type was never initialized.

libavformat/mpeg.c:507:24: 
505.         case 0xa0:  codec_id = CODEC_ID_PCM_DVD;
506.                     break;
507.         case 0x80:  if((dvdaudio_substream_type & 0xf8) == 0x88)
                            ^
508.                          codec_id = CODEC_ID_DTS;
509.                     else codec_id = CODEC_ID_AC3;
