Calibrated Software DV50 Decode v2 - Manual (Page 16)

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This controls how chroma is interpolated when converting from YUV 422 - > RGB 444. ‘Average Neighbors’ will produce
smoother c olors when converting; ‘Duplicate Values’ was added to essentially ‘turn off’ the averaging for a few customer’s
custom workflows.
Important Note about QuickTime Gamma Settings
Please Note: Even with the above settings to adjust Gamma, it is imperative that a user test out the settings in their own
workflows due to the fact that QuickTime Player and 3
rd
party applications can still disregard the Gamma information from
a codec and still attempt to adjust Gamma on their own.
Performance Options
MT YUV->RGB: This option can enable/disable multi-threading YUV to RGB conversions if an application is requesting
frames in the RGB colorspace.
MT-X YUV->RGB: DEFAULT This option can enable/disable multi-threading YUV to RGB conversions with OPTIMIZED
8-bit color-conversion routines if an application is requesting frames in the 8-bit RGB colorspace when the Quick Setup is
set to either “Full Range/Gamma OFF” or “SMPTE Range/Gamma OFF”.
Colorspace Watermark
This option watermarks the video in the top-left corner – it is IMPORTANT to disable this option when doing production
work or rendering as the watermark will be a part of the video – this option is just meant for quick checks for the user to
see what colorspace Calibrated{Q} DV50 Decode is handing to the calling application. The watermark is a black
rectangle. The top text will be 8-bit YUV422
– this indicates what the DV50 video was decompressed as. The bottom text
will either say Deliver 8-bit YUV422, Deliver High Precision YUV, Deliver 8-bit RGB444, Deliver 8-bit RGBA4444, Deliver
16-bit RGB444, or Deliver 16-bit RGBA4444
– this indicates what colorspace the video frame is delivered at to the calling
application.
FourCC Output Support(Advanced)
All QuickTime codecs must be able to decompress to 8-bit RGBA and 8-bit RGB as a base colorspace format. QuickTime
codecs can also declare that they can decompress to other types of colorspaces as well, which can be useful in certain
workflows and applications.
Important Note about FourrCC Output Support
Even though Calibrated{Q} DV50 Decode supports decoding to 8-bit YUV422, 16-bit RGB(A) 444(4), and other YUV
colorspaces (i.e. High-Precision YUV) - it is up to an application using Calibrated{Q} DV50 Decode to request those
colorspaces
– most applications though only request 8-bit RGB(A) 444(4) from QuickTime codecs.
The FourCC options enable you to set which colorspaces, beyond the base 8-bit RGBA/RGBA, that Calibrated{Q} DV50
Decode codec will declare to applications that it supports.
There are three FourCC options:

Enable 8-bit YUV (enabled by default)

Enable High-Precision YUV

Enable 16-bit RGB(A)
Enable 8-bit YUV
Enable/disable support for 8- bit YUV422 ‘2vuy’ colorspace. This colorspace is the natural colorspace to which the codec
will decompress. This option enables the QuickTime Player to perform decoding at its fastest speed and is necessary for
the best playback performance in the QuickTime Player. The decompression speed also greatly improves in any other
application that is capable of recognizing that the codec can decompress to 8-bit YUV422 data.