[MEncoder-users] mencoder ignores mf h/w (height/width) options?

[Rich Felker]

On Sat, Jul 15, 2006 at 05:06:17PM +0200, Alexander Skwar wrote:
> Hello!
> 
> I've got a number of JPEG files in a directory, which are all 2816x1872
> pixels big. I then encoded those JPEGs into a MPEG4 file with mencoder:
> 
> $ mencoder 'mf://*jpg' -mf w=800:h=532:fps=2:type=jpeg -ovc lavc -lavcopts \
> 	vcodec=mpeg4:mbd=2:trell:mpeg_quant:mv0:cbp:qprd:vbitrate=80 -oac \
> 	copy -o aus.avi

[...]

> As you can see, mplayer detected a video with a size of 2816x1872 pixels.
> 
> But shouldn't the "-mf h" and "-mf w" options control the output
> h/w? In "man mencoder" I find:

No, absolutely not. They tell the mf demuxer the _input_ width and
height for cases where it can't be automatically determined.

If you want to resize the video you need to use the scale filter like
always.

Rich