[MPlayer-users] Transcoding from one aspect ratio to another

[JD]

On 11/03/2010 09:28 AM, VDR User wrote:
> On Wed, Nov 3, 2010 at 9:06 AM, JD<jd1008 at gmail.com>  wrote:
>> I have a video file that has an aspect ratio of
>> 2.353 : 1
>> I would like to transcode it to an aspect ratio
>> of 1.6 : 1 (like 1280x800).
>> Is this even possible?
> Are you asking to simply resize the resolution but maintain the same
> aspect ratio, or actually change the aspect ratio?  Either way the
> answer is yes.  You can monkey around with the resolution, aspect
> ratio, or both as much as you like.  Just do so with care to not
> completely lame it in the process.
Thank  you very much.
Yes - I would like to keep same aspect ratio as far as
the object in the video - I do not want them to appear
fatter or thinner than the original, but would like
the video to fit inside 1280x800 without any black or
blank borders.
Couls you please show me a command line example
of how to do that?
Original video file is in avi format. I would like to make
the new format plan mpeg4 (no avi container).

Cheers,

JD