VIdeo don't play properly on macOS

[kelson42]

Even recent one which play properly everywhere else https://download.kiwix.org/zim/other/mali-pour-les-nuls_fr_all_2019-09.zim

[kelson42]

@automactic To me, maybe most important problem to fix on macOS

[rgaudin]

See openzim/youtube/issues/40

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be now be reviewed manually. Thank you for your contributions.

[kelson42]

@automactic Does that problem has been tackle with your last revamp?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be now be reviewed manually. Thank you for your contributions.

[rgaudin]

Fixed see youtube compat