You’ll need to cut the video into parts and then append those parts via the api..
so yeah, it’s not that simple imo. I’ve done it before for some clients, and it depended on their workflow, but the main hassle was dealing with the chunked parts.
Of course, there are 3rd-party services to use, but they come at the cost of privacy since you’re granting them access to your social media account so they can post on your behalf, so you need to be cautious..
Anyway, there are services like Blotato, which also has its own n8n node,
also Buffer, which would be an amazing option once you get API access (currently in early access).