MEncoder

ffmpeg -threads 2 -i "${1}.dv" -y "${1}.tmp.dv" -vhook '/usr/lib/vhook/watermark.so -f logo.png'

mencoder -o "${1}.flv" \
         -of  lavf -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames \
         -oac lavc -srate 22050 \
         -ovc lavc -lavcopts vcodec=flv:vbitrate=250:autoaspect:acodec=mp3:abitrate=56 \
         -af equalizer=0:0:0:0:0:0:0:0:-6:-12,comp,volume=20,lavcresample=22050 \
         "${1}.tmp.dv"    -vf crop=669:547,scale=320:240,eq2=1:1:-0.2:1.3:1.1:0.8:0.6 \
         abspann.dv       -vf scale=320:240