"Always be happy and stay well," he told fans.
The brief clip was filmed before the singer's hitch began in December.
The first new music from the Big Bang singer in six years is due out next week.
The concert film will open in Feb. in 110 countries.
The K-pop stars' newly released 'The Road : Celebration' EP is the final chapter of their 11th album.
The show at Circle in the Square opened Nov. 27 and will close after 44 preview performances and 17 regular shows.
The BTS member's new solo album brought in nearly 89% of the vote.
He reached back for mixtape song "seoul" and played a pair of tracks from his new "Indigo" solo album.
The show will feature unreleased footage of the K-pop icons.
The series will debut next Monday.
