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Re: Creating Reference QT from FCPX or anything else

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Joe Marler
Re: Creating Reference QT from FCPX or anything else
on Oct 15, 2019 at 1:49:33 pm

Thanks for that correction. The QT7 Pro "Open Image Sequence" command included the ability to save it as a reference movie, so I wrongly assumed that restoring this feature in Catalina QT10 also included that. But it appears to only include the ability to encode an image sequence as a regular video file.

The QT7 reference movie feature was nice and fast on the creation side, but without transcoding it was generally quite slow within FCPX. So I would often end up transcoding it anyway.

Here is an old link that supposedly has PHP code to produce a Quicktime reference file:

The original Quicktime format specification included a provision for reference movies consisting mostly of pointers to external sources. I assume that was implemented via the Quicktime framework which has now been taken over by AV Foundation:

See "Reference Movies" on page 81 of the ver. 1 Quicktime File Format Spec:

Using reference movies via AV Foundation was mentioned in this 2015 WWDC talk, so it must still be possible (in some fashion) from an API standpoint:

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