[MEncoder-users] help embedding subtitles

[willowtree at mts.net]

 Hi. I'm trying to embed subtitles onto an avi file (for youtube). I
found the  following code online...

 mencoder -vop pp=de,scale=352:288 -oac copy -ovc lavc -lavcopts
keyint=25:vcodec=mpeg4:vbitrate=679:vpass=1 -sub "Sarayac2_56k.ass" -o
"EMBG_Sarayac2_56k[sub].avi" "Sarayac2_56k.avi"

...which worked, but the end of the video was erratic/jumpy. Is there
something I'm doing wrong? Or is there a better way to embed the subs?
I'm a total novice here (I don't even understand what everything above
means) so if it's not any trouble, maybe someone could provide an
example that I can run.

Thank you very much,

John.