libavformat/utils.c:1514: error: Uninitialized Value
  The value read from pos_min was never initialized.

libavformat/utils.c:1514:5: 
1512. {
1513.     AVInputFormat *avif= s->iformat;
1514.     int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
          ^
1515.     int64_t ts_min, ts_max, ts;
1516.     int index;
