Issue #1780: Safari Webcam Fix.
Issue #1780: Safari Webcam Fix.

(cherry picked from commit e82efd2)

foosel/OctoPrint,bicephale/OctoPrint,foosel/OctoPrint,JackGavin13/octoprint-test-not-finished,JackGavin13/octoprint-test-not-finished,JackGavin13/octoprint-test-not-finished,bicephale/OctoPrint,foosel/OctoPrint,Salandora/OctoPrint,JackGavin13/octoprint-test-not-finished,Jaesin/OctoPrint,bicephale/OctoPrint,beeverycreative/BEEweb,beeverycreative/BEEweb,foosel/OctoPrint,bicephale/OctoPrint,Jaesin/OctoPrint,Jaesin/OctoPrint,Salandora/OctoPrint,Salandora/OctoPrint,beeverycreative/BEEweb,Jaesin/OctoPrint,Salandora/OctoPrint,beeverycreative/BEEweb