Transcode provides a direct interface to the low level controls of the underlying lavc (ffmpeg) library via the ffmpeg.cfg file:
[mpeg4]
mbd = 2
trell = 1
qpel = 1
gray = 0
cmp = 3
subcmp = 3
[mpeg1video]
[mpeg2video]
nr = 20
gray = 0
mbd = 2
mv0 = 1
trell = 1
cbp = 1
cmp = 3
subcmp = 3
vqcomp = 0.7
vqblur = 0.3