libavcodec/metasound.c:320: error: Uninitialized Value
  The value read from isampf was never initialized.

libavcodec/metasound.c:320:9: 
318.         break;
319.     default:
320.         av_log(avctx, AV_LOG_ERROR,
             ^
321.                "This version does not support %d kHz - %d kbit/s/ch mode.\n",
322.                isampf, isampf);
