libavcodec/metasound.c:314: error: Uninitialized Value
  The value read from isampf was never initialized.

libavcodec/metasound.c:314:9: 
312.         break;
313.     default:
314.         av_log(avctx, AV_LOG_ERROR,
             ^
315.                "This version does not support %d kHz - %d kbit/s/ch mode.\n",
316.                isampf, ibps);
