I have been developing some tools for the media production lately, i found a neat way to add or subtract certain amount of seconds to a given time code.

for example i have a video that starts from 12:45:05 and i want to add 59 seconds to it and use the new time.

from datetime import datetime
from datetime import timedelta
 
time = datetime(2009, 1, 1, 12, 45, 05, 0)
 
diff = timedelta(seconds = 59)
 
final_time = time + diff