ffmpeg and libx264

[ogourgue (Olivier Gourgue)]

I installed ffmpeg with and without nonfree variant and tried to encode video with codec libx264

When running:

ffmpeg -c:v libx264 -y -r 5 -i "geomorphology_%d.png" geomorphology.mp4

I got the error:

Unknown decoder 'libx264'

I could not find information about which variant to install to have libx264 support (e.g. to make videos compatible with power point)