Hello. When one user comment video, author get notification: "User1 posted a comment on your video".

When 2 or more users comments video, author get the same text "User1 and User2 posted a comment on your video".

In both case system use the same language stream:

APP_USER_VIDEOS_NOTIFICATIONS_COMMENTED_ON_YOUR_VIDEO="%1$s posted a comment on your video"

I suppose, system should use different strings (PLURAL and SINGULAR) like for reaction:

APP_USER_VIDEOS_NOTIFICATIONS_LIKES_USERS_VIDEO_PLURAL="%1$s reacted to {b}%2$s's{/b} video"
APP_USER_VIDEOS_NOTIFICATIONS_LIKES_USERS_VIDEO_SINGULAR="%1$s reacted to {b}%2$s's{/b} video"

because in non-english sites it's important to use display "posted" word with a little bit differens if there is 2 or more users commented videos.

Thanks.

Updated: I suppose, the same problem with notification when 2 users comment Story post in group (it looks the same when one user comment post)

APP_GROUP_STORY_USER_POSTED_COMMENT_ON_YOUR_POST="%1$s posted a comment on your post"