Set the mp3 bitrate to encode audio with
-r , --mp3-samplerate <hz>
Set the mp3 samplerate to encode audio with (default: 11025)
--d , --scale <val>
+-s , --scale <val>
Scale down to factor <val>. (in %, e.g. 100 = original size)
+-S , --skipframes <num>
+ Skip <num> frames before starting the conversion.
-p , --flip
Turn movie upside down
-q , --quality <val>