ffmpeg.c:3642: error: Null Dereference
  pointer `today` last assigned on line 3640 could be null and is dereferenced at line 3642, column 69.

ffmpeg.c:3636:1: start of procedure opt_vstats()
3634. }
3635. 
3636. static void opt_vstats (void)
      ^
3637. {
3638.     char filename[40];

ffmpeg.c:3639:5: 
3637. {
3638.     char filename[40];
3639.     time_t today2 = time(NULL);
          ^
3640.     struct tm *today = localtime(&today2);
3641. 

ffmpeg.c:3640:5: 
3638.     char filename[40];
3639.     time_t today2 = time(NULL);
3640.     struct tm *today = localtime(&today2);
          ^
3641. 
3642.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,

ffmpeg.c:3642:5: 
3640.     struct tm *today = localtime(&today2);
3641. 
3642.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
          ^
3643.              today->tm_sec);
3644.     opt_vstats_file(filename);
