Andrew:
  on page 315 I can see reference to configure switch
--with-findobject, but as far as I can see this switch was removed in latest git code?

Yes, that was removed from the build.  The above section is being looked at today and I will try to get it fixed to pass along to Andrea for inclusion.

Andrea:  could you change on p. 190 (typo, not 390) the pix_fmt to cin_pix_fmt as you see below?  Thank you.
at p. 190

1 mov prores
2 preset medium
3 pix_fmt yuv422p10le
 
Andrew:
shouldn't be pix_fmt changed to cin_pix_fmt, according to our recent discussion
I am correcting the ffmpeg/video opts files that mistakenly use pix_fmt and they will be checked into GIT in a day or 2.