QuVIS Acuity, User Manual

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QuVIS Image Format Files
QuVIS uses “format files” to store all of the system settings directly related to a particular video format. This
includes picture size, frame rate, display rate, etc. Format files describe to the QuVIS server how its hardware must
be setup in order to record or play a particular signal type. The format information is stored with the media file so
the server may quickly load the appropriate format file and prepares the system for playback.
Format files makes it easy to define a particular mode of operation without requiring the operator to set each setting
independently. QuVIS video servers are more flexible than most video recorders allowing the user to create content
for a wide variety of standard and custom display applications. Using format files enables QuVIS to quickly add
additional image format support to meet emerging new standards or custom modes based upon customer
requirements.
There are three basic types of image format files: Windowed, Standard and Custom.
Windowed image formats
A windowed format is a special format designed to playback an unusual video signal – one where the
image size is smaller than the format of the video standard used to deliver it. Early Digital Cinema (some
still exist) video projectors were unable to display the entire frame of an HD image. Windowed formats
enabled the exact size of the picture the projector could accept (1280x1024) to be delivered via a standard
HD-SDI video interface. You might think of this format as a form of letterbox display. In the projector the
excess picture area is cropped so that the viewer see a full screen image.
Windowed image formats are notated with the letter “w” in the first part of the format file name.
Example:
hd2w_1280x1026sf23.98
Video 4:2:2, 4:4:4:0 and 4:4:4:4 image formats
Standard or video image formats are those that strictly adhere to the published standards for a particular
format and frame rate. This includes Standard Definition (SD), High Definition (HD) and dual-link HD-SDI
(SMPTE 372M) video formats.
Use of 4:4:4:4 image formats are required when recording 3D QPE content.
Digital Cinema 2K and 4K (12-bit, 4:4:4:0) image formats
Digital Cinema formats use DCI JPEG2000 image encoding, which is reflected in the file name for these
formats.
Example:
jp2k_2048x1080sF24
Example (DCI 3D): jp3d_2048x1080sF24
Custom image formats
QuVIS video servers support a variety of standard and custom graphics (VESA) video formats. These
image formats are typically Analog only formats meaning that may only be output via the servers Analog
Component Output (ACO).
QuVIS Acuity
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