Hi Trevor,
Have forwarded you a link to upload the mov that fails. Until we can look at the mov in question I hope you can understand we can only speculate on what the issue is with this media. As per the other thread you are on we have to use Apple’s AVFoundation, it appears to be this that is struggling with some of the mov’s. In the non swift code in X2Pro we used a variety of methods to open and read .movs, essentially we built our own reader in conjunction with later on AVFoundation and R3D sdk’s. Apple wants us only to use AVFoundation going forward, but I am jumping ahead, we need to look at the .mov first.
Yours Sincerely
James.