frogonwheels

avconv -i "${infile}" -r 50 -vf "yadif=0:-1:1,crop=in_w:in_h*6/8:1:in_h/8,scale=-1:360,pad=640:360:(ow-iw)/2:(oh-ih)/2,setsar=1:1" -af "volume=-3dB" -ar 48000  -b 3200k -codec:a aac -strict experimental -codec:v mpeg4 "${outfile}"

Outputs> 

avconv version 10_alpha1-6:10~~git20131111.45ef963-1~ubuntu13.10.1, Copyright (c) 2000-2013 the Libav developers
  built on Nov 11 2013 22:51:26 with gcc 4.8 (Ubuntu/Linaro 4.8.1-10ubuntu8)
[mpeg @ 0x1f82680] max_analyze_duration reached
Guessed Channel Layout for  Input Stream #0.1 : stereo
Input #0, mpeg, from 'TheInvitation.VOB':
  Duration: 00:04:57.47, start: 0.360000, bitrate: 7510 kb/s