ffmpeg: callback only every 60 secs
ffmpeg: callback only every 60 secs

albertz/music-player,kingsj/music-player,albertz/music-player,albertz/music-player,albertz/music-player,kingsj/music-player,albertz/music-player,kingsj/music-player,kingsj/music-player,kingsj/music-player,albertz/music-player