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Media management consolidation and Amira files

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Oliver Peters
Media management consolidation and Amira files
on Feb 8, 2019 at 12:28:24 am

There is a common, known issue with Premiere Pro and ARRI Amira and Alexa Mini files. Generally you will be unsuccessful in transcoding trimmed files when consolidating a sequence in Project Manager. Files are copied in full. This has been going on for several years and several versions and Adobe hasn't fixed it for whatever reason. Trimming *does* work successfully in other apps and NLEs.

The cause for this seems to be the master clip effect on the source clip - Lumetri with the Amira LUT to correct Log-C to Rec 709. This is triggered by metadata in the camera file and cannot be removed in Premiere. Master clip effects can be disabled, but not removed. I presume Adobe has some reason for this. The bottom line is that this means you can only copy the file, but not consolidate it with Project Manager

There are 4 workarounds if you truly want a consolidated sequence from Amira/Mini clips.

1. You can export an XML and bring that into a new project. In that project, it is *sometimes* possible to manually delete individual master clip effects on the sources in the timeline. If successful, the sequence will properly transcode/consolidate. Bear in mind some effects will be lost in this path, particularly "scale/set to frame size". Of course, you'll then have to manually add back a LUT to the clips later.

2. Roundtrip through Resolve. From Resolve, render trimmed clips with handles with an XML. This effectively becomes your consolidated project.

3. Before starting, transcode your files to DNxHD/HR MXF. Those will show up in Premiere without a master clip effect and can be consolidated. Of course, LUTs will need to be manually added.

4. Transcode to Quicktime copies using "rewrap". AME will do this and strip off the metadata for the LUT so you can consolidate. However, if you use Compressor, the metadata stays.

HTH - Oliver

Oliver Peters - oliverpeters.com


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John Pale
Re: Media management consolidation and Amira files
on Feb 9, 2019 at 12:23:36 am

Faced this on my most recent project. Would have resulted in a 590GB “consolidation”. Used Resolve and got it to about 50.


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