[MEncoder-users] I have a problem when I encoded with -ass option.

[new tom]

Dear everyone.

I have a problem when I encode with -ass option.
Previous subtitle is never disappeared, so subtitles are overlapped.
How to solve this problem?

My encoding command is below.

 mencoder.exe "D:\Movie\Ben.DVD.XIVD-STG.avi" -o
"D:\Encoded\thomas\[K_MPEG4_AAC]Ben.DVD.XIVD-STG.mp4" -of lavf -lavfopts
format=MP4 -mc 0 -audio-preload 0.0 -ovc lavc -lavcopts
vcodec=mpeg4:vglobal=1:mbd=2:turbo:threads=3 -ofps 30.000 -vf-add
crop=512:256:-1:-1,scale=480:240,expand=480:320:-1:-1:0 -oac faac -faacopts
br=128:mpeg=4:object=2:raw -srate 44100 -ass -sub
"D:\Movie\Ben.DVD.XIVD-STG.smi" -subfont-text-scale 5 -subfont-outline 2
-subfont-blur 2 -subpos 95