On Mon, 28 Dec 2015 12:07:16 +0100 Reindl Harald <h.reindl at thelounge.net> wrote: > so just replace "poster%03d.png" with that filename "-update 1" (or the alias "-updatefirst 1") output option is needed, or else the output file name will be interpreted as a pattern and then fail. See: http://ffmpeg.org/ffmpeg-formats.html#image2-2