[Cin] latest hacks

[Andrea paz]

I downloaded a new ffmpeg-4.4.tar.xz and now the compile error
happened a little bit later. I attach the cin5.log.
However I think that the fault is not the tar.xz but mine, that I had
removed also the ffmpeg.git patches, during some tests, in addition to
the ffmpeg-4.3 patches

PS: I tried a build without patches, but including the 3 of h265
present in git. The installation works, but trying to render using
h265 at 10bit and h265 at 12bit, leads to these errors:

[libx265 @ 0x7f3fa57f2400] Specified pixel format yuv422p10le is
invalid or not supported
FFMPEG::open_encoder  err: Invalid argument
int FFMPEG::open_encoder(const char*, const char*):
open failed libx265:/home/paz/video_editing/prova/10bit.mp4
Render::render_single: Session finished.
[libx265 @ 0x7f3fa57ef400] Specified pixel format yuv422p12le is
invalid or not supported
FFMPEG::open_encoder  err: Invalid argument
int FFMPEG::open_encoder(const char*, const char*):
open failed libx265:/home/paz/video_editing/prova/12bit.mp4
Render::render_single: Session finished.
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