[MEncoder-users] adding black bars to maintain aspect ratio

[n0dalus]

On 2/25/06, Jon Drukman <jsd at cluttered.com> wrote:
> i am trying to figure out how to get mencoder to always output a 4:3
> image, but with black bars added to preserve the original aspect ratio
> of the input video file.  is it possible?  i've played around with dsize
> and dscale using the negative value options but i always get a stretched
> 4:3 image.  i could be putting in any aspect ratio video but i always
> want a 4:3 result with added black bars (if necessary).
>

Read the man page (specifically the scale and expand options).

n0dalus.