AFAIK, only the second option. Depending on your workflow, I see two 'solutions'. 1 - If you are on mobile app, subscribe to the channel on youtube. Them every

AFAIK, only the second option. Depending on your workflow, I see two 'solutions'. 1 - If you are on mobile app, subscribe to the channel on youtube. Them every few days, check your subscriptions on YT and add them on your RSS reader, while unsubscribing from YT. 2 - On desktop, many RSS readers have extensions to follow the current page, so you could use an extension to subscribe. Some mobile apps might let you share a link to it, and them subscribe there. The inconvenient thing about that is, it could be more cumbersome if for example, you sit on your couch and want to just cast some video to the TV. On a RSS reader you might need to click the link, which will open on YT app, and then cast.