Best as I can tell there is no difference between Shorts and full length videos when coming from the RSS feed. It even loads in the full player on the website when following the url.
The best I've come up with is to use youtube-dl to get the duration and if it's shorter then 60s drop the item.
The best I've come up with is to use youtube-dl to get the duration and if it's shorter then 60s drop the item.