libavcodec/hevc_sei.c:76: error: Uninitialized Value
  The value read from quincunx was never initialized.

libavcodec/hevc_sei.c:76:5: 
74.     s->frame_packing_arrangement_type = type;
75.     s->content_interpretation_type    = content;
76.     s->quincunx_subsampling           = quincunx;
        ^
77. }
78. 
