oktw says to #ysitd <seadog007>: https://www.google.com.tw/search?num=30&site=&source=hp&q=ffmpeg+ubuntu&oq=ffmpeg+ubuntu&gs_l=hp.3..0l10.230.4435.0.4665.13.8.1.4.4.0.98.540.8.8.0....0...1c.1.64.hp..1.12.476.0.S_icRhylddo