I have noticed that the HTML5 video/audio player (AppleCoreMedia) on mobile Safari on iOS 7 excludes all cookies, even first-party cookies. Not even sessions cookies are inc
This problem is not yet fixed by Apple. We are continuously receiving reports from our users running iOS 7.0.6 that they are not able to play video clips because no cookies are included in the header.
And for many users, turning safari into private mode, and then back to normal, does not fix the problem.
I have also noted that Dropbox wrote in their blog that they have reverted back to url token authenticating because of problems of these kind with video players.
Apple is continuously ignoring our bug report so this bug will probably not be fixed for a long time.