[Cin] Latest GIT checkin includes FFmpeg upgrade + Masking

[Andrea paz]

Using the mask leads to the following errors at the terminal. The mask
is drawn but the fade does not work: it shows the fade all over the
frame and not in the mask.
The errors, repeated for each action on the mashera tool, are:

Playback3D::print_error:
link
Fragment info
-------------
(0) : error C6020: Constant register limit exceeded at n; more than
1024 registers needed to compile program
(0) : error C6020: Constant register limit exceeded at dxy; more than
1024 registers needed to compile program
(0) : error C6020: Constant register limit exceeded at twh; more than
1024 registers needed to compile program

See the video:
https://streamable.com/jxw8v