4.5

170Compressor User Guide
1. After you add a source file to a batch and assign a transcode setting in Compressor,
open the Video inspector.
If you assigned a transcode setting that allows you to modify the output file’s color
space, a “Color space” pop-up menu appears in the Video inspector. (This pop-up
menu is different from the “Color space” pop-up menu in the Job inspector, described
in the previous task.)
2. To change the color space of the output file, click the “Color space” pop-up menu and
choose a different option.
Depending on the transcode setting you applied, there are several choices; if you
applied a transcode setting that supports 10-bit color (an Apple ProRes setting or the
HEVC setting with 10-bit color), HDR options appear in the pop-up menu:
• Automatic: The color space assigned by Compressor (in the “Color space” pop-up
menu in the Job inspector).
• Rec. 601 (NTSC): An older, standard-gamut color space designed for interlaced
analog video signals in North America and Japan.
• Rec. 601 (PAL): An older, standard-gamut color space designed for interlaced analog
video signals in Europe.
• Rec. 709: The standard-gamut, 8-bit color space used by high-definition TV
displays, the Blu-ray Disc format, and most TV broadcasters.
• Rec. 2020: A wide-gamut color space developed for future consumer display
devices but useful today for mastering (to future-proof your projects) and for 4K and
8K TV projects. Even though no currently available consumer TVs can display the
entire Rec. 2020 palette, wide-color-gamut displays can display a subset of those
colors.
• Rec. 2020 PQ: The Rec. 2020 color space using the perceptual quantizer (PQ), a
mathematical transfer function that converts image signal values in a video file
to absolute light levels on an HDR-capable display. Designed to approximate the
sensitivity of human eyes, PQ allows for better levels of contrast at all light levels.
Use this option to output files in the HDR10 format.
• Rec. 2020 HLG: The Rec. 2020 color space using hybrid log-gamma, a mathematical
transfer function that converts image signal values in a video file to scene-
relative light levels. HLG, which was developed by the BBC and the NHK (Japan
Broadcasting Corporation), requires no metadata and is also compatible with SDR
displays.
• P3 D65 PQ: Combines the Display P3 color space (the wide color gamut used by
newer Apple devices and by wide-gamut 4K TVs) with the perceptual quantizer (PQ)
function to convert color and luminosity values to high-dynamic-range levels of
contrast.
• sRGB (IEC 61966-2-1):The industry-standard color space for computer displays,
similar to Rec. 709 and used in nearly all standard-gamut displays currently on the
market. This standard is also used for most digital still images in formats such as
JPEG, GIF, PNG, TIFF, BMP, and so on.
3. After you set the output color space and adjust any other desired settings, transcode
the batch.