Sounds like a suggestion to
Stu might be in order. He's always open to suggestions/ideas. Try posting more details in the
WeatherCat Feature Requests forum.
If I understand that tag correctly, it basically just triggers WC to upload the movie file, any and every time is sees the tag, so any file it processes that has the tag will cause an upload.
Sounds like you might want an option to change the hourly schedule. That might then require an adjustment on the length of the movie; a two hour long movie may be just as big as two one hour movies. The total bandwidth (if that's the correct term) would probably be very nearly the same.
Decreasing the number of frames (say every five minutes)(set in the prefs) will reduce the size of the movie, of course. Changing the size (800x 600, 640x480, etc.)(also in the prefs) will also reduce the file size. Doing both might be the easiest way to reduce the upload bandwidth until the real experts come along.
Your camera software
may have some controls for changing the resolution?