mov and m4v videos don't play
Open, Needs TriagePublic


Issue started to happen after upgrading to stable version "2017 Week 2", for example the following sample mov video doesn't play:

For m4v, seems working in Firefox, some works in chrome, but not working in Safari:

Used to work on an older builder of phabricator.

See also T12079 and T12219, although I'm not sure if either of those are duplicates of this.