netflix

Color Managed Workflow for NETFLIX in Resolve: ACES

This is one of the many ways in which Davinci Resolve can be configured in order to be able to deliver a Non-graded Archival Master (NAM) to Netflix .

Project Settings

Create a new project, go to the Project Settings > Color Management panel. The first thing you will want to change is the Color Science settings to ACEScct. If you don’t have a specific reason to use ACEScc, it is recommended to use ACEScct. 

ACES Version will default to v1.1 which includes updated Output Transforms for HDR output color spaces. Generally, we recommend using the latest ACES version which, as of today, is v1.1.

Set your ACES Output Device Transform to match the calibration and capacities of your video display:

  • For SDR, this will be Rec. 709, which corresponds to a monitor calibrated to Rec. 709 / BT.1886 with 100 cd/m2 peak luminance.

1 aces.png
  • For HDR, this will be P3-D65 ST.2084 (PQ) with the corresponding nit level your monitor is capable of. Today, most commonly, this will be P3-D65 ST2084 (1000 nits).

2 aces hdr.png
    • Make sure the ACES Mid Gray Luminance setting stays at 15.00 throughout the whole grading and finishing process.

  • Process Node LUTs will only apply in the event that you are loading LMTs as LUTs to the project. The setting will vary depending of those LMTs were generated.

An important note is that when the ACES Output Device Transform is set to None, Resolve will output ACES images a.k.a. ACES 2065-1 or ACES Linear (AP0).

Bringing in Clips

By default, for RAW clips, Resolve will automatically debayer images into ACES and you should see a normal looking image. 

For non-RAW formats (such as DPX, ProRes, XAVC, etc), Resolve may not automatically detect the color space, so you will have to manually select your ACES Input Device Transform (IDT).

You can do this by right-clicking on a shot or group of shots in the Media Pool, as shown in the screenshot below. 

Example: you shot XAVC on the Sony F55 using the SLog3-SGamut3.CINE color space, and bring these clips into the Media Pool. Resolve is not able to recognize this based on the metadata, so you must manually select “Sony SLog3 SGamut3CINE” from the ACES Input Device Transform dropdown list.

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You may also set your Project to default to a specific ACES Input Device Transform. This may be handy if the majority of your clips will be in a common color space and cannot be auto-detected. 

TIP: Sorting your Media Pool by “Format” or “Video Codec” columns can help batch-assign IDTs to groups of clips highlighted at one time. See screenshot below for an example.

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Rendering

When you are ready to render your deliverables, open up the Deliver page.

IMF Master, Video Display Master (VDM) or Quicktime references

When rendering images in display color spaces, such as those required for IMF Master deliverables, a VDM source for IMF creation, or Quicktime references, make sure your ACES Output Transform is enabled and matches the intended display type.

Non-Graded Archival Master (NAM)

For the Non-Graded Archival Master (NAM), make sure you turn off the ACES Output Transform in order to output ACES AP0/Linear data as shown below.

NOTE: For any interchange of images between facilities or softwares in an ACES pipeline, such as VFX plates, the following method should be used.

Ensure you have the following render settings:

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NOTE: The setting ‘Force debayer to highest quality’  will automatically select what Resolve considers to be the highest debayering quality for each RAW file on the timeline. This may differ from your own findings. Please feel free to select your preferred debayering algorithm instead, and untick this option if you prefer.

Note: Resolution may vary depending on the project’s framing, but should be at UHD resolution (3840 x 2160) or higher.

1  Since the ACES color space is Linear, the ACEScct and ACEScc spaces were defined as logarithmic (log) working color spaces, so that traditional color correction tools would feel similar to other log color spaces.

2  Rec.2020 is not used for Netflix deliveries at this time.

3  half = 16-bit half-float

4  No Output Tranform will output ACES Linear aka. ACES 2065-1 (AP0).

Creating IMF for Netflix in UAE

What is IMF?

The Interoperable Master Format (IMF) is a family of standards for implementation of CMW. Published by SMPTE, the ST 2067 family defines methods for interchange of a wide variety of audiovisual content, including all common television and cinema formats. The promise of IMF is reliable CMW, assembled from off-the-shelf components and local requirements.

If you have IMF Delivery for Netflix please contact us.

Netflix color pipeline

NETFLIX Color Pipeline

Color Pipeline Requirements

It is important to ensure that images are stored in the widest possible color space until the very final stages of the color pipeline. This is easily achieved by using ACES, which keeps images in a high dynamic range, wide color gamut space, and allows the user to simply select the Output Transform for the target viewing display. This can also be achieved while working in the dominant camera color space with careful, pro-active color management and the use of conversion and viewing LUTs. Both methods are outlined below.

Color pipeline documentation must be shared with production and post-production ahead of the first day of photography. 

Non-ACES Pipelines (Camera Native + Show LUT)

  • Working Color Space ust be defined and communicated to all departments.
    • Examples: Sony SLog3-SGamut3.CINE, REDLogFilm-DragonColor, Panasonic V-Log-V-Gamut, CanonLog3-CinemaGamut
  • Output / Show LU must be defined and shared between all departments.

ACES Pipelines

  • ACES Versio (i.e. v1.0.2) should be defined and shared between all departments. 

On-Set & Dailies Colo

  • CDLs only
    • No secondaries, keys, or power windows to ensure compatibility in post.
  • Order of operations is critical
    • CDLs must be applied before Output Transform.
    • See diagram below.
  • On-set and dailies monitors must be calibrated to the Rec.709 / BT.1886 standard, or equivalent HDR standard (i.e. PQ / SMPTE ST.2084)
Color_Pipeline_v2.1_onset.png
Color_Pipeline_v2.1_SDR.png
Color_Pipeline_v2.1_HDR.png

Color Grading for Netflix

Color Grading: Dolby Vision / HDR

Netflix Originals are mastered, packaged, and delivered in the Dolby Vision format. From this package, we derive Dolby Vision, HDR10, and SDR streams for Netflix customers to enjoy.

netflix-dolby-vision-d01.jpg

Color grading suite requirement

  • Professional HDR monitor (Dolby-Vision certified, >1000 cd/m2)

    • Sony BVM-X300 (30 inch, 4K)

    • Dolby Pulsar (42 inch, HD)

    • Canon DV-2420 (24 inch, 4K)

    • Other HDR reference monitors as certified by Dolby for Dolby Vision HDR grading
  • Professional SDR monitor

    • Rec.709, BT.1886 / Gamma 2.4, 100 cd/m2

  • Color grading software with Dolby Vision support

    • Filmlight Baselight

    • DaVinci Resolve

    • Nucoda FilmMaster

    • Autodesk Lustre

    • Quantel Rio
  • Content Mapping Unit (CMU) System (per Dolby specification)

  • Dolby Vision License

    • Activates CMU and color grading plug-in

  • Dolby Vision Training

What to deliver for netflix?

Dolby Vision VDM (Video Display Master)

  • 16-bit TIFF frame sequence

    • Color Space: P3 D65, PQ (ST.2084), full-range

  • Dolby Vision XML file containing accurate metadata*


* Please ensure that all XML metadata is accurate, including Color Encoding, Mastering Display, and Aspect Ratio. Please use Dolby's metafier validation to ensure that there are no errors in the metadata.