I did not have quicktime installed because, as per Apple's Quicktime download page, I did not think a windows 8 version was available. They should really update the Quicktime page to show that it works with Windows 8.
Everything working now.
Thank you for sharing your information with us. Much appreciated.
Hello, I am having a very similar problem to yours. I've looked on other forums that have same issue, and have seen that they've been able to resovle it, but I am unable to see the answer. Could you please help me out and tell me how you resolved your issue?
I am also using windows 8 and have all the CC apps. Also same as you, the file won't open on Media Encoder.
Yes you have to download quicktime from the quicktime website. It doesn't list a windows 8 or 10 version but it still works.