This option can be set independently for each image.
-r --rate <framerate>
Set movie framerate (frames per second)
+-z --zlib <zlib>
+ Enable Flash 6 (MX) Zlib Compression
+ Use Flash MX (SWF 6) Zlib encoding for the output. The resulting SWF will be
+ smaller, but not playable in Flash Plugins of Version 5 and below.
-X --width <width>
Force movie width to <width> (default: autodetect)
-Y --height <height>