Łukasz,
please always reply to the entire mailing list, not just me, so that
others may be able to help too.
The error messages you reported are related to nppdf.so, which comes
from the Adobe Reader browser plugin. You could try uninstalling that,
though I suspect that's not related to you
Łukasz, you could try installing the 'ubuntu-restricted-extras'
package:
$ sudo apt install ubuntu-restricted-extras
That contains various commonly used media codecs, and should make most
videos work. I would restart Epiphany after installing this package.
If you've tried that and videos st
