I would like to add template functions and filters:
sec_to_time_interval() 125 -> "02:05"
time_interval_to_sec() "1:01:01" -> 3661
I have already added these for my own use. If others are interested let me know and I will try to work through the submission process.
For my automation I use text selector witch will take:
YYY:DDD:HH:MM:SS (all fields are optional except SS)
I have thought about a selector (similar to the time selector).
Let me know what you think!