VideoFormat
VideoFormat class defines video format
attributes such as encoding scheme, dimension,
frame rate, etc.
include fields defining RGB, YUV, JPEG, MJPG,
MPEG, H263, CINEPAK, and INDEO50.
Specialized classes : H261Format, H263Format,
JPEGFormat, RGBFormat, and YUVFormat.
H263Format can have its attributes (i) arithmetic
coding, (ii) advanced Prediction, (iii) Error
Compensation etc enabled or disabled.