:: Replace libx264 with gremlins/x264? [Y/n] y
resolving dependencies...
:: There are 2 providers available for liblsmash.so=2-64:
:: Repository world
1) l-smash
:: Repository extra
2) l-smash
warning: removing 'libx264' from target list because it conflicts with 'x264'
error: failed to prepare transaction (could not satisfy dependencies)
:: unable to satisfy dependency 'libx264.so=152-64' required by ffmpeg
working solution coming soon ;-)
The new ffmpeg resolved the issue. Everything back to unignored.