Very Frustrating, and only some I speak with at Apple Support understand what I'm telling them, or understand why it's a problem at all. Since the IOS6 Update on my iPad3, any movie I export to a PC, regardless of what method I transfer it over with ( PhotoSync, Dropbox ), if that PC is using Quicktime 7.7.2, you get a green or black screen, with audio only playing. iTunes can play the video in it's latest version, but you do have to drop back to Quicktime 7.7.1 or even Quicktime 7.6 to get the video to at least play, if not at it's smoothest and best. I would be very angry if I paid for Quicktime 7.7.2 Pro, as it's $30 for that, and then not have it work.
My Macbook Pro is using both Quicktime 10 and Quicktime 7.6 Pro, as that is as high as my MidSummer 2010 Macbook running the latest version of Snow Leopard will allow. Videos works there so far after the IOS6 update on my iPad3.
But on my PC using XP Pro SP3, any video made or re-rendered on my IOS6 level iPad3, won't play properly, on Quicktime 7.7.2, or Realpayer, or on Windows Media Player 11. If I uninstall Quicktime 7.7.2 off my PC, and install Quicktime 7.6 or 7.7.1 instead, the video will then play, and the weird part, is that they then will also play in Realplayer too!! That's right, did nothing but change what version of Quicktime on the PC, and suddenly a popular universal media player like RealPlayer magically works again.
Its clear that a lot of other people using any video made on an iPad, iPhone, or iPod updated to IOS6, transfered over to a PC, are finding plenty of problems with many programs that before the IOS6 update, worked just fine before that. To complicate things like this for the PC based viewers of any video work produced by an Apple device using IOS6, is a major mistake, as whether Apple likes it or not, not all viewers or clients of Apple customers are indeed Apple product users themselves, and Apple is still outnumbered by non Apple device users, so you bascally find people like me losing a huge part of the viewer or client base, because they can't see the videos, and they don't want to have to be told to do complicated "work arounds". Gets worse if people did buy Quicktime or at least downloaded a free version of it, only to find they now have to go retro back to older and less capable software to get any positive result, and in some cases, that might not even be an option. Not even sure if I use some kind of "convertor" program, it would work, if its a matter of a "progressive verse non-progressive scan" issues.
Really it sounds like an easy fix, and its important fix, just think about what you are seeing in this thread, and do it. Things will be great again.