How to convert 16:9 to 4:3 using mencoder?

[sektionschef]

Hi
I have several mpeg2 video files in 704X576(PAL) with an aspect ratio of 16:9.
I want to convert them to flv to upload to youtube.
To do this I also need to convert them to 4:3 by adding black bars on top and bottom of video(letterboxing).
Can I do this with mencoder? How?
The final flv should be 320X240 in 4:3 with added balck bars.
Thanks for any hints on this.
Regards
Sektionschef

[Soopafresh]

You can modify this script to prepare your video. I know very little about PAL A/R, so I don't know what it will look like, but give it a try.



youtube_emulate.zip

[45tripp]

There's a youtube upload guide, with a sample mencoder command here:
https://forum.videohelp.com/topic336882.html

aside from other parameters you might want to change,
here's the exact video filter line you want:

-vf scale=320:-3,expand=320:240

gl

[sektionschef]

Many Thanks for your fast answers!!!
I don't know why but
-vf scale=320:-3,expand=320:240
did not add the black bars, instead the video got stretched vertically.
I found out that the parameters
-vf scale=320:180,expand=320:240
did the job!!!
Don't know why because using -3 should preserve the original(16:9) aspect ratio but -3 didn't work.
I double checked my source mpeg2 files , they are defenitely 16:9
However, my problem seems to be solved!
Regards
Sektionschef