Mark Underkofler @markunderkofler2 • Joined May 2017 • Active 5 years ago Remove Connection Are you sure you want to remove from your connections? Timeline Profile Connections Photos Forums Points Leader Badges Discussions Replies Favorites Discussions Replies Favorites Forum Discussions Started Viewing 1 of 1 discussions All Discussions Mark Underkofler When attempting to playback Apple ProRes 4444 videos on Windows machine just get black screen Mark Underkofler replied 7 years, 7 months ago 2 Members · 2 Replies Square Box CatDV Viewing 1 of 1 discussions