Btw you should be able to just upload your videos directly here Different clients will use different media servers by default, most offer a paid service to upload larger files and make sure they stay hosted But they all generally let you upload decent size files for free and I havent noticed anything Ive uploaded become unavailable yet. Theres always the option to host your content yourself too, then you can whatever the hell you please

Also be wary of throwing your nsec into random apps, but its worth trying other clients to see what you like