ALEXA XR Module Workflows - White Paper Page 3 of 9
The XR Module
All ALEXA XT cameras come with the new XR Module, which was co-developed with Codex. The module is
a new camera side panel which brings exciting in-camera recording options and replaces the popular SxS
Module. Also being available as an upgrade for all classic ALEXA cameras, the XR Module is another
manifestation of the modular upgradeability that ARRI built into the ALEXA design from the very beginning.
The XR Module allows in-camera ARRIRAW recording up to 120 fps onto exceptionally fast and rugged XR
Capture Drives. By removing the need for the external recorder, it makes shooting ARRIRAW easier and
more affordable than ever before. The ALEXA becomes more compact, rugged, and lighter. There are no
more cables to worry about and less configuration that needs to be done.
The XR Module can also record footage in the popular, ready-to-edit ProRes or DNxHD formats, either onto
XR Capture Drives, which provides significantly longer recording times, or, with an adapter, onto SxS PRO
cards.
The Storage Media
Capturing 120 fps of uncompressed ARRIRAW data requires a throughput of almost 850 MB per second,
which requires for something more powerful than SxS PRO cards.
XR Capture Drive
The Capture Drives for the XR Module are equipped with highly reliable
solid-state drive technology in a small and rugged aluminum housing. The
gross storage space of an XR Capture Drive is 512 GB, but the actual
capacity depends on how it is formatted. For ARRIRAW recording, the
drives offer 480 GB for recording; for compressed recording, they currently
offer 240 GB. The XR Capture Drives share the same mechanical interface
as the Codex Capture Drives and Codex Transfer Drives, so they can be
accessed using the standard Codex docking stations. The XR Module
currently allows recording only to the XR Capture Drives, while support for
the Codex Capture Drives is planned for a future software update.
Like for SxS PRO cards, the same Capture Drive can be used to record different frame rates and/or
compression codecs. Compressed ProRes/DNxHD and uncompressed ARRIRAW, however, cannot be
recorded on the same drive because of the two different file systems.
XR Capture Drive Format Overview
Format
Aspect
Ratio
fps Range Ouput Pixels
File Size
[MByte/frame]
Data Rate
@ 24 fps
[MByte/sec]
Data Rate
@ max fps
[MByte/sec]
Rec Time
@ 24 fps
[minutes]
Rec Time
@ max fps
[minutes]
ARRIRAW 2.8K 4:3 0.75 – 48 2880 x 2160 9.33 224 448 35 17
ARRIRAW 2.8K 16:9 0.75 – 120 2880 x 1620 7.00 168 840 47 9
ProRes 4444 2K 4:3 0.75 – 48 2048 x 1536 2.09 50 100 79 39
ProRes 4444 2K 16:9 0.75 – 60 2048 x 1152 1.57 38 94 106 42
ProRes 422 HQ 2K 4:3 0.75 – 48 2048 x 1536 1.57 38 75 106 53
ProRes 422 HQ 2K 16:9 0.75 – 120 2048 x 1152 1.18 28 141 141 28
ProRes 4444 HD 16:9 0.75 – 60 1920 x 1080 1.38 33 83 120 48
ProRes 422 HQ HD 16:9 0.75 – 120 1920 x 1080 0.99 24 118 168 33
Notes:
- ProRes 4444 at 120 fps and DNxHD recording are planned for a later software update.
- ProRes is a variable bit rate codec. The data rates and recording times will vary depending on image content.
- For all formats offering up to 120 fps, the camera actually needs to be switched between
0.75 – 60 (regular speed) and 60 – 120 fps (high speed) mode.
All data subject to change without notice.
(27 Seiten)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern