Well, QT for Windows dying just made my situation with a legacy After Effects CS4 workflow extremely interesting.

We'll be capturing green screen footage in XDCAM HD422 at 1080i then keying it in After Effects. But AE CS4 9.0.3 only accepts native XDCAM HD (NOT 422) import.

So with Quicktime dead, I was going to use Photo - JPEG as my intermediate, but I can't anymore. The only solution I can see working to retain the keying quality is a PNG image sequence.

I've also been getting non stop spam search results seeing if there's a solution, with all these potentially dangerous MXF "video converters" that could be malware.

I'm going to have massive filesizes for my intermediates with this current method. Legacy systems got SO screwed by QT dying.

We ended up using TIFF intermediate image sequences cause PNG does not support interlaced rendering with a field order option in Premiere CC. Such a PITA cause the file sizes per frame matched what they were for uncompressed video.