I am trying to encode H264 files to FLV format. The resolution is fairly high; 960 x 540 with audio. The H264 file is 29.4MB in size. I have tried numerous options (admitting that I am completely new to FLV encoding as well as ffmpegX) but the file sizes are always approximately 49-50MB in size.

Hoping someone can give me some encoding pointers and/or point me to a resource that will help guide my settings.

Thanks in advance!