Changed how video files are compared. Instead of comparing strings
directly, the files are converted to a TimeSpan object. There is a
function that compares two timespans, one that is this, and one that is
passed in as a parameter, and a integer tolerance. The tolerance should
be a number in seconds. The tolerance by default is 1, but can be
changed with the -t {int} argument.

The -d deletes the source file after verifying the source file and
converted file are equivalent (timespan is equal with the given
tolerance).