ffmpeg.c:4188: error: Null Dereference
  pointer `today` last assigned on line 4186 could be null and is dereferenced at line 4188, column 69.

ffmpeg.c:4182:1: start of procedure opt_vstats()
4180. }
4181. 
4182. static int opt_vstats(const char *opt, const char *arg)
      ^
4183. {
4184.     char filename[40];

ffmpeg.c:4185:5: 
4183. {
4184.     char filename[40];
4185.     time_t today2 = time(NULL);
          ^
4186.     struct tm *today = localtime(&today2);
4187. 

ffmpeg.c:4186:5: 
4184.     char filename[40];
4185.     time_t today2 = time(NULL);
4186.     struct tm *today = localtime(&today2);
          ^
4187. 
4188.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,

ffmpeg.c:4188:5: 
4186.     struct tm *today = localtime(&today2);
4187. 
4188.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
          ^
4189.              today->tm_sec);
4190.     return opt_vstats_file(opt, filename);
