ffmpeg: fix (locking)
ffmpeg: fix (locking)

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