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ProRes 4444 XQ
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ProRes 4444 XQ

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ProRes 4444 XQ is Apple's highest-quality ProRes codec variant, designed for HDR content, VFX, and extreme color grading workflows.

Overview

Apple ProRes 4444 XQ is the highest quality tier of the ProRes codec family. It is a 4:4:4:4 codec that stores the three color channels without chroma subsampling and additionally supports an alpha channel for transparency. The format is specifically designed to preserve the high dynamic range (HDR) of modern digital sensors as well as fine tonal gradations, and is primarily aimed at VFX pipelines and footage that undergoes extensive color manipulation in post-production.

Within the ProRes family, 4444 XQ sits above regular ProRes 4444 and significantly above the 4:2:2 variants (422 HQ, 422, 422 LT, 422 Proxy). It is an intermediate codec with visually lossless (not mathematically lossless) compression. ProRes 4444 XQ was introduced by Apple in 2014.

Technical Specifications

PropertyValue
Chroma Sampling4:4:4 (no subsampling) plus Alpha Channel (4:4:4:4)
Bit Depth Image Channelsup to 12 bits per channel
Bit Depth Alpha Channelup to 16 bits
Target Data Rateapprox. 500 Mbps at 1920 x 1080 and 29.97 fps (4:4:4 source)
Position in ProRes Familyhighest quality tier, above ProRes 4444

The data rate scales with resolution and frame rate; the stated value is Apple's specified target rate for the reference resolution of 1080p29.97.

On-Set and Post-Production Usage

ProRes 4444 XQ is primarily chosen where maximum tonal and color reserves are needed: for HDR recordings, as a mastering and VFX exchange format, and for footage that is heavily graded or further processed with greenscreen keying and compositing. The alpha channel makes the format useful for rendered CGI elements and composites with transparency.

  • Higher data rate than ProRes 4444 - correspondingly more headroom, but also larger files and higher demands on storage and bandwidth during editing.
  • For many standard productions, ProRes 4444 or 422 HQ is sufficient; 4444 XQ is worthwhile for extreme grading or VFX requirements.
  • As an Apple codec, it is primarily prevalent in the Mac/Final Cut/DaVinci environment; encoding outside of Apple platforms is limited.
From the crafts

Perspectives

Cinematographer

Ich setze ProRes 4444 XQ hauptsächlich für externe Recorder wie den Atomos Shogun ein, wenn die interne Kamera-Aufzeichnung nicht ausreicht. Die 12-Bit-Farbtiefe gibt mir deutlich mehr Spielraum beim Grading, besonders in den Hauttönen und bei subtilen Farbverläufen. Der Alpha-Kanal ist Gold wert, wenn ich On-Set-Compositing oder Live-Keying mache.

Director

Für mich bedeutet ProRes 4444 XQ maximale Flexibilität in der Post – ich kann Farbentscheidungen bis zum Schluss offenhalten und habe genug Headroom für drastische Look-Changes. Bei VFX-lastigen Szenen ist es unverzichtbar, da jede Komprimierung die Compositing-Qualität beeinträchtigen würde. Die Gewissheit, dass technisch nichts verloren geht, befreit mich, kreativer zu experimentieren.

Producer

ProRes 4444 XQ vervierfacht unsere Storage-Kosten gegenüber Standard-ProRes, aber eliminiert teure Re-Renders in der Post. Ein Tag 4K-Dreh kostet zusätzlich etwa 800€ an Speichermedien, spart aber oft Wochen an Nachbearbeitung. Die universelle Kompatibilität zwischen allen Post-Häusern macht Vendor-Wechsel problemlos und reduziert Transcoding-Zeiten erheblich.

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