Jelly-ffmpeg6 is not available: how to install ?

[TheDreadPirate]

The problem is how to add a 3D render driver, like "renderD128". Then after, I will be able to pass it to the docker container (with the render group).
For the moment, if I try to pass it to the container my message is 

Code:

docker: Error response from daemon: error gathering device information while adding custom device "/dev/dri/renderD128": no such file or directory.

because it does not exist:

Code:

xxx@yyy:~$ ls -l /dev/dri
total 0
drwxr-xr-x 2 root root      60 août  18 12:53 by-path
crw-rw---- 1 root video 226, 0 août  18 12:53 card0
xxx@yyy:~$

Code:

xxx@yyy:~$ lspci | egrep -i 'vga | affichage | 3d'
00:02.0 VGA compatible controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 35)

And this is from the host and not the container?!  Huh.  I will have to research that.