On Mon, Aug 28, 2006 at 09:08:01PM +0200, All Pebre wrote: > elachistos| mplayer -vo yuv4mpeg -o stream.yuv "mf://*.png" -mf > type=png:fps=30 The default filename is stream.yuv, so you can just leave that part off. According to the manpage the correct syntax is: mplayer "mf://*.png" -mf type=png:fps=30 -vo yuv4mpeg:file=stream.yuv HTH, -r