Duration and End Time options don't accept hours or minutes

[xrigau]

So running giffify.py -h returns:

optional arguments:
  # [...]
  -s START_TIME, --start-time START_TIME
                        Start timestamp, as [-][HH:]MM:SS[.m...] or
                        [-]S+[.m...]
  -e END_TIME, --end-time END_TIME
                        End timestamp, as [-][HH:]MM:SS[.m...] or
                        [-]S+[.m...]. Overridden by -d
  -d DURATION, --duration DURATION
                        Duration, as [-][HH:]MM:SS[.m...] or [-]S+[.m...].
                        Overrides -e

but if you actually try to use any of these options with a time that contains HH:MM or MM an error gets thrown:

~/Desktop  $ giffify.py -s 00:10 test.gif -o out.gif
usage: giffify.py [-h] [-o OUTFILE] [-dw DESIRED_WIDTH] [-dh DESIRED_HEIGHT]
                  [-fps FPS] [-s START_TIME] [-e END_TIME] [-d DURATION]
                  video
giffify.py: error: argument -s/--start-time: invalid int value: '00:10'

This happens both if you use HH:MM:SS and MM:SS and happens for start time, end time and duration.

It works fine if you pass just the seconds