High-Density Encoding (HDE) seems to be the latest technology developed by Codex in collaboration with ARRI which essentially minimizes ARRIRAW file sizes by around 40%. All in all, an uncompressed Bayer pattern image can be reduced to an HDE file size not much larger than a corresponding ProRes 4444 XQ file. Except that with Codex HDE, you can access the original pixel values that were initially encoded.
In other words, ARRI ALEXA Mini and AMIRA users can now implement HDE technology and reduce the captured ARRIRAW files almost by half, thus drastically decreasing storage space needed when shooting in RAW. Keep in mind, though, that this workflow can be enabled only by purchasing a license. It also doesn’t save any space when you are shooting, it takes place only when you start offloading your material.
Once you are finished shooting ARRIRAW, you can use any CFast 2.0 card reader (including models with dual card slots and Thunderbolt connections) to minimize ARRIRAW file sizes on your computer.
HDE typically results in a file that is 60% of the original ARRIRAW file size. For example, ARRIRAW OpenGate 3.4K is normally 11.5MB/frame and 996.2GB/hour. When stored as HDE, this becomes 6.9MB/frame and 584GB/hour.
It’s also worth mentioning that this workflow is available for macOS users only and requires the use of a compatible copy tool such as Hedge, Offload Manager, Silverstack, Shotput Pro, or YoYotta. For best results, Codex recommends using a MacBook Pro or Mac Mini from 2018 or later as a minimum specification.
In essence, Codex High-Density Encoding (HDE) uses sophisticated, loss-less encoding to reduce ARRIRAW file sizes during downloading or later in the workflow. This lowers storage costs, shortens transfer times, and speeds up workflows, which translates to a direct 40% saving in time and money. HDE is free-of-charge for use with Codex Capture or Compact Drives.
When shooting with ALEXA Mini or AMIRA cameras, (HDE) license will set you back $35 per day, $175 per month, or $1,500 on an annual basis depending on your specific production needs.
For more information, head over to the official Codex HDE page where you can also download the Trial HDE Encoder and try it for yourself.
[source: Codex]
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