On Sun, Jun 05, 2016 at 01:02:10 +0200, juan carlos Rebate wrote: > >ffmpeg -h format mpeg You're really not to be helped if you can't read. Just for fun, compare what I wrote: $ ffmpeg -h muxer=mpeg and what you just posted: ffmpeg -h format mpeg If you insist on using the latter (for the third time now), go ahead. Moritz