[theora] ffmpeg2theora 0.28 released

[dos386]

Some more suggestions:

* Add YUV4MPEG+WAV output (it's free too ... as"any2free"
  (encoding) utility). MPLAYER can do this, but the YUV4MPEG
  output is always "420" subsampled :-(

* How difficult would it be to support 2 versions of Libtheora (1.1 and 1.2a)
  in one binary? As 0.24 & Co had 2 separate binaries (1.0 and 1.1a or 1.1b),
  I guess this is not trivial ? FFMPEG2DIRAC supports 2 versions of the
  Dirac codec (but located in 2 "very separate" libs).