[FFmpeg-user] V360 filter

[Michael Koch]

Paul,

> Single-fisheye is done as output only currently, user need to set both 
> h_fov and v_fov. 

I'm just testing the new single fisheye options and as far as I have 
tested, everything looks good.
Would it be possible to add an option for filling the unused area with a 
user-defined color, instead of the default black?

Some suggestions for documentation:
-- "perspective" needs better description what it is. I don't know.
-- "ball" is the same as when the whole 360° environment is seen as a 
reflection in a mirror ball

Michael