srt-vtt  [-q] [-v] [-r] [-o <string>] [-t <integer>] [--] [--version] [-h] <string>

  -q,  --quiet
    Prevents details about the conversion from being printed to the console.
    Overrides --verbose.

  -v,  --verbose
    Indicates that details about the conversion should be printed to the console.

  -r,  --recursive
    If the input is a directory, this flag indicates its subdirectories will be searched
    recursively for .srt files to convert. This flag is ignored if the input path is a
    file.

  -o <string>,  --output-dir <string>
    The path to a directory where all output VTT files will be saved.

  -t <integer>,  --offset <integer>
    Timing offset in milliseconds. Can be any integer between 2147483647 and -2147483648.

  --,  --ignore_rest
    Ignores the rest of the labeled arguments following this flag.

  --version
    Displays version information and exits.

  -h,  --help
    Displays usage information and exits.

  <string>
    Path to a file to convert or directory containing files to convert (to convert files
    in a directory and it's subdirectories, include the -r switch).

  If called without any arguments, all .srt files in the current directory will be
  converted and saved within the current directory.