I need convert flash(duration time film 25min) no too long duration time with Scale0tilt effect(Scale0tilt killed black backgroud), . I'm seeking codec supporting to phone and rendering as well very well quality to looking subtitle "sewn"
I Tested little a mpg4, h264, but sometimes any video player didn't fount streaming video or in 80Mb grew to 5GB

acodec=libmp3lame ab=128k ar=44100 vcodec=libxvid minrate=0 b=800k aspect=%dar mbd=2 trellis=1 mv4=1
It's solve my proplem from large size but I can't find How to Rendering faster
http://img41.imageshack.us/img41/6336/whygz.jpg

try adding threads=X where X is the number of CPUs