libavformat/flvdec.c:404: error: Uninitialized Value
  The value read from size was never initialized.

libavformat/flvdec.c:404:9: 
402.         st->codec->codec_id == CODEC_ID_H264) {
403.         int type = avio_r8(s->pb);
404.         size--;
             ^
405.         if (st->codec->codec_id == CODEC_ID_H264) {
406.             int32_t cts = (avio_rb24(s->pb)+0xff800000)^0xff800000; // sign extension
