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Quicktime JPEG2000 with alpha

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Amit Zinman
Quicktime JPEG2000 with alpha
on Apr 25, 2018 at 11:45:26 pm

I opened an old AE project that has two Quicktime JPEG2000 with alpha files that won't open.
Can anyone convert them for me or help me open them?


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Walter Soyka
Re: Quicktime JPEG2000 with alpha
on Apr 26, 2018 at 10:04:34 am

The backstory: Apple deprecated the QuickTime libraries in 2011 when they introduced AVFoundation on Mac OS X Lion, and they ended official support for QuickTime on Windows back in 2016.

Further, Apple announced in the summer of 2017 that the High Sierra (macOS 10.13) would be the last release of macOS to support 32-bit applications (such as QuickTime and the QuickTime frameworks). There has never been a 64-bit release of QuickTime, so there will be no way at all to use the QuickTime libraries on the next release of macOS.

Please note: this does not mean the QuickTime .MOV file format has been deprecated. We can all still use .MOV files, but developers will no longer be able to use the Apple QuickTime libraries for building apps that read, write, encode and decode them.

Since there's an entire industry relying on QuickTime, developers including Adobe have been writing their own QuickTime library replacements. Adobe's is called MediaCore. Adobe has written direct support for a number of QuickTime codecs [link] that are commonly used in production into the so-called DVA apps (Ae, Pr, Au, and AME).

Unfortunately, JPEG2000 is not one of them. As a workaround, you can download the previous version of After Effects (Ae CC 2018 v15.0.1 still supports 32-bit QuickTime codecs), or you can download the previous version of Adobe Media Encoder and use it to transcode your legacy media to one of the supported formats.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]

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Harry Watson
Re: Quicktime JPEG2000 with alpha
on Sep 15, 2019 at 2:16:09 am

Apple's Compressor app will open and convert JPEG 2000 .mov files. I just successfully converted mine to Prores 4444+ (with alpha) with Compressor v 4.4.4. I hope that helps someone. Cheers!

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