Timecode calcultation problem

[madhurcodes]

Noticed a small issue with timecode calculations. Apparently the python timecode library does not support timecodes in the dot format like expected by the code.

print(Timecode( 24, '17:39:53:51.21'))
print(Timecode( 24, '17:39:53:11.21'))
17:39:53.208
17:39:53.208

I don't know how much the unreal live link utilizes these timecodes so this might work in practice but still something to fix maybe.