I had some issues with "jumpy" videos. When playing back, it skipped from time to time some frames, which is annoying in scenes with a lot of movement. I found out that you should select the same framerate as the input format. In my case, this is fps=25. The following 2 profiles should work well with PAL recordings:
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[MPEG2_Samsung]
profile-desc="MPEG2 Samsung"
vf=pullup,softskip,pp=fd,scale=:-2,hqdn3d,harddup
ovc=lavc=yes
oac=lavc=yes
lavcopts=vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=8000:keyint=15:trell=yes:mbd=2:precmp=2:subcmp=2:cmp=2:dia=-10:predia=-10:cbp=yes:mv0=yes:vqmin=1:lmin=1:dc=10:vstrict=0:acodec=mp2
lavdopts=threads=2
ofps=25
mc=0
of=lavf=yes
[MPEG2_Samsung_low]
profile-desc="MPEG2 Samsung lower quality"
vf=pullup,softskip,pp=fd,scale=:-2,hqdn3d,harddup
ovc=lavc=yes
oac=lavc=yes
lavcopts=vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=6000:keyint=15:trell=yes:mbd=2:acodec=mp2:threads=2
lavdopts=threads=2
ofps=25
of=lavf=yes
mc=0
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