libavformat/flvdec.c:847: error: Uninitialized Value
  The value read from dts was never initialized.

libavformat/flvdec.c:847:13: 
845.             // sign extension
846.             int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000;
847.             pts = dts + cts;
                 ^
848.             if (cts < 0) { // dts are wrong
849.                 flv->wrong_dts = 1;
