libavformat/flvdec.c:810: error: Uninitialized Value
  The value read from flags was never initialized.

libavformat/flvdec.c:810:20: 
808.     if (is_audio) {
809.         int bits_per_coded_sample;
810.         channels = (flags & FLV_AUDIO_CHANNEL_MASK) == FLV_STEREO ? 2 : 1;
                        ^
811.         sample_rate = 44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >>
812.                                 FLV_AUDIO_SAMPLERATE_OFFSET) >> 3;
