[mythtv] port of denoise3d to MythTV

[Bruce Markey]

Andrew Mahone wrote:
...
> It works with my previous patch, the options accepted are the same as for the 
> mplayer vesion of the filter, accepting an option string of <l>:<c>:<t>, with 
> float value for the luma, chroma, and temporal filter strengths.  If the 
> options patch is not used, or no options are passed, the default 4:3:6 is 
> used.  Higher settings will cause more blurring and ghosting, the defaults 
> generally do a good job of reducing noise without introducing too many 
> visible artefacts.

Okay, I should dig through the source and figure this out for
myself but how are users supposed to add or remove the filter
and set the option values?

--  bjm