====== ffmpeg ======

=== Letterbox a 16x9 video ===

<code>
ffmpeg -i input.mp4 -s 640x360 -aspect 4:3 -vf pad=640:480:0:60 output.mp4
</code>

=== Equnix Video Standards ===

<code>
ffmpeg -i input.mp4 -vcodec libx264 -vcodec libfaac -s 640x360 -aspect 4:3 -vf pad=640:480:0:60 -b 800k output.mp4
</code>