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Content Hub - Preparing Picture Mastering Assets

 

Asset Naming and File Formats: Picture Mastering

 

Picture Archival Assets

 

Non-Graded Archival Master (NAM)

A complete copy of the non-graded, fully conformed, final locked picture, including final VFX, rendered in the original working color space at working resolution with no frame matting applied; in a file format of equal or greater quality than the primary camera's original capture format.

  • 16-bit uncompressed EXR (.exr) in ACES, or camera's Linear color space
  • 10 or 16-bit DPX (.dpx) in camera's Log color space
    • When working with RAW or 16-bit source media, archival assets must be rendered at 16-bit.

 

Graded Archival Master (GAM)

A complete copy of the final color graded, fully conformed, final locked picture, including final VFX, rendered in the original working color space (i.e. ACES or camera Log colorspace with no output / display transform rendered in or applied) at working resolution with no frame matting applied; in a file format of equal or greater quality than the primary camera's original capture format, as used to create an associated Video Display Master.

  • 16-bit uncompressed EXR (.exr) in ACES, or camera's Linear color space
  • 10 or 16-bit DPX (.dpx) in camera's Log color space
    • When working with RAW or 16-bit source media, archival assets must be rendered at 16-bit.

 

Graded Archival Master:  Viewing Transform

Output transforms or Look-Up Tables (LUTs) used for monitoring during color grading and Video Display Master output, as applied to the Graded Archival Master.

  • LUT in .cube format
  • To be delivered as a distinct asset, see “Viewing Transforms and Color Projects” article for additional details.

 

Video Display Master (VDM)

A complete copy of the color graded, fully conformed, final locked picture, including final VFX, rendered in the mastering display color space at deliverable resolution, as used as a source for the creation of the IMF deliverable. Resolution and aspect ratio should match that of the IMF deliverable; either Native 4K (4096x2160) or Ultra HD (3840x2160). If approved by Netflix, HD (1920x1080) or 2K (2048x1080) may be acceptable.

  • Dolby Vision HDR: 16-bit uncompressed TIFF (.tiff) in Display Color Space (PQ P3-D65)
    • Dolby Vision metadata (.xml) to be included as a sidecar file
  • SDR: 10 or 16-bit DPX (.dpx) in Display Color Space (Rec. 709)
    • When working with RAW or 16-bit source media, archival assets must be rendered at 16-bit.

 

Digital Cinema Distribution Master (DCDM)

A complete copy of the color graded, fully conformed, final locked picture, including final VFX, rendered as DCDM at a 4K DCI compliant resolution as used to create the OV Master DCP. If approved by Netflix, a 2K DCI compliant resolution may be acceptable.

  • DCDM: 16-bit uncompressed TIFF (.tiff) in Display Color Space (XYZ)

 

Folder Structure and Image File Naming Convention

 

Below details the folder structure and naming convention for image files.  Episodic content requires a ‘Season & Episode’ field in the folder and file name.  Non-episodic content requires a ‘Segment’ (reel) field in the file in the file name. Non-episodic segmented (reel-based) content requires a ‘Reel’ subfolder.  

 

Note:  there is a current ### file-per-folder limitation due to Aspera Connect, if it is anticipated that this limit will be exceeded, contact a Netflix Asset Specialist.

 

Episodic

Folder Name:

[Project Title]_[Season & Episode]/[Asset Type]_[Dynamic Range]_[ACES Version (When Applicable)]_[Color Space]_[Display Transfer Function]_[Date]_[Aspect Ratio]_[Resolution]/

 

File Name:

[Project Title]_[Season & Episode]_[Asset Type]_[Dynamic Range]_[ACES Version (When Applicable)]_[Color Space]_[Display Transfer Function]_[Date]_[Aspect Ratio]_[Resolution]_[Frame Number].[File Extension]

 

Non-Episodic Longplay

Folder Name:

[Project Title]/[Asset Type]_[Dynamic Range]_[ACES Version (When Applicable)]_[Color Space]_[Display Transfer Function]_[Date]_[Aspect Ratio]_[Resolution]/

File Name:

[Project Title]_[Reel]_[Asset Type]_[Dynamic Range]_[ACES Version (When Applicable)]_[Color Space]_[Display Transfer Function]_[Date]_[Aspect Ratio]_[Resolution]_[Frame Number].[File Extension]

 

Non-Episodic Segmented/Reel-Based

Folder Name:

[Project Title]/[Reel]/[Asset Type]_[Dynamic Range]_[ACES Version (When Applicable)]_[Color Space]_[Display Transfer Function]_[Date]_[Aspect Ratio]_[Resolution]

 

File Name:

[Project Title]/[Reel]/[Asset Type]_[Dynamic Range]_[ACES Version (When Applicable)]_[Color Space]_[Display Transfer Function]_[Date]_[Aspect Ratio]_[Resolution]_[Frame Number].[File Extension]

 

Naming Convention Fields

Project Title

The full title, using lower-case characters, substituting spaces with underscores, and omitting illegal characters.

 

Season & Episode (Episodic Only)

For episodic content, an abbreviation denoting the season and episode number.  The season number should be preceded by an “s”, the episode number should be preceded by an “e”.  The season number should be notated in two-digits, the episode number should be notated in three-digits.  (Example:  season 1 episode 1 would be “s01e101”.)

 

Segment (Reel) (Non-Episodic Only)

For non-episodic content, an abbreviation denoting the segment/reel number or if the content is in ‘longplay’ format (a continuous sequence not broken into segments/reels).  For segmented/reel-based content, the segment/reel number should be preceded by an “r” and the segment/reel number notated in two-digits.  For ‘longplay’ content, the abbreviation of “lp” should be used. (Examples:  reel 1 of a segmented/reel-based asset would be “r01”, a ‘longplay’ asset would be “lp”.)

 

Asset Type

An abbreviation describing the type of asset.

 

Asset Type

Asset Type Abbreviation

Non-Graded Archival Master

nam

Non-Graded Archival Master: Textless Inserts

nam-txtls

Graded Archival Master

gam

Graded Archival Master: Textless Inserts

gam-txtls

Video Display Master

vdm

Video Display Master: Textless Inserts

vdm-txtls

Digital Cinema Delivery Master

dcdm

Digital Cinema Delivery Master: Textless Inserts

dcdm-txtls

 

Dynamic Range

An abbreviation describing the Dynamic Range.

 

Dynamic Range

Dynamic Range Abbreviation

High Dynamic Range

hdr

Standard Dynamic Range

sdr

 

ACES Version (When Applicable)

An abbreviation detailing the version of ACES used (when applicable).  The version number should be detailed in three-digits, out to two decimal point places.  The notation of the ACES version number should not include a decimal point itself. (Example:  ACES 1.1 would be “aces110”, ACES 1.03 would be “aces103”)

 

Color Space

An abbreviation describing the Color Space of the image.  For Non-Graded Archival Masters and Graded Archival Masters, the abbreviation should reference the color space of the file it is describing, not the intended ‘final’ display color space.  (Example:  If a standard-dynamic-range project was graded in the camera’s Log color space, the abbreviation should reference that color space, not ITU-R BT.709 / Rec.709 color space.)



Color Space

Color Space Abbreviation

ADX

adx

DCI P3

p3dci

ITU-R BT.2020 (Rec.2020)

rec2020

ITU-R BT.709 (Rec.709)

rec709

P3 D65

p3d65

sRGB

srgb

XYZ

xyz



Display Transfer Function

An abbreviation describing the Display Transfer Function of the image.  For Non-Graded Archival Masters and Graded Archival Masters, the abbreviation should reference the transfer function of the file it is describing, not the intended transfer function of the ‘final’ display.  (Example:  If a standard-dynamic-range project was graded in the camera’s Log color space, the abbreviation should reference the corresponding display transfer function not ITU-R BT.1886 / 2.4 Gamma.)

 

Display Transfer Function

Display Transfer Function Abbreviation

ADX

adx

DCI (2.6 Gamma)

g26

ITU-R BT.1886 (2.4 Gamma)

g24

Linear (1.0 Gamma)

lin

LogCv3

logc

S-Log2

slog2

S-Log3

slog3

SMPTE ST-2084 (PQ)

pq

sRGB (2.2 Gamma)

g22



Date

The date the asset was created in year/month/day format (example:  “20190102” for January 2nd, 2019).

 

Aspect Ratio

The aspect ratio of the active image, derived by dividing the active resolution of the width by the active resolution of the height, rounded to two decimal points.  The notation of the aspect ratio should not include a decimal point places (example:  1.78 aspect ratio would be notated as “178”).  

 

Resolution

The resolution of the image notated as [width]x[height].  The resolution should detail the full resolution of the file, not just the active image.

 

Frame Number

A seven-digit number signifying the Frame Number.  If the Frame Number is less than seven-digits, pad out to seven-digits with zeros (example:  0086400).  The image sequence must be sequential in numbering and numbered in the order they are intended to be displayed in.  The numbering should be consistent between asset types (example:  the first-frame-of-action for a Graded Archival Master and a Video Display Master of the same content should be numbered the same).

 

File Extension

A group of letters and or numbers after a period in a file name, denoting the format of the file.

 

Legal and Illegal Characters

  • Legal characters: [ a-z ], [ A-Z ], [ 0-9 ], [ . ], [ _ ], [ - ]
  • ILLEGAL: spaces or any other symbols/characters.

 

Textless Notes

  • Textless assets should include a textless background for any shot/sequence of the content that contains on-screen graphic text.
  • Textless shots/sequences do NOT need to be provided for on-screen graphic text that appears over black in the texted version.
  • Textless shots/sequences should be provided cut-to-cut (i.e., the textless insert should not begin or end in the middle of a shot, the entire shot should be provided).
  • Textless shots/sequences should include (3) frame handles on both sides of the shot/sequence.
  • Textless shots/sequences should be numbered to match the numbering of the corresponding texted shot/sequence.
  • Textless main titles or credits do not require a distinct naming convention.

 

Examples

Episodics (Series)

episodictitle_s01e101/vdm_hdr_p3d65_pq_20190102_200_3840x2160/

/episodictitle_s01e101_vdm_hdr_p3d65_pq_20190102_200_3840x2160.########.tiff


episodictitle_s01e101/vdm-txtls_hdr_p3d65_pq_20190102_200_3840x2160/

/episodictitle_s01e101_vdm-txtls_hdr_p3d65_pq_20190102_200_3840x2160.########.tiff

 

episodictitle_s02e201/vdm_sdr_rec709_g24_20190103_178_3840x2160/

/episodictitle_s02e101_vdm_sdr_rec709_g24_20190103_178_3840x2160.########.dpx

 

Features - Reels

featuretitle/reel/dcdm_sdr_xyz_g26_20190104_239_4096x1716/r01/

/featuretitle_r01_dcdm_sdr_xyz_g26_20190104_239_4096x1716.########.tiff

 

Features - Longplay

featuretitle/dcdm_sdr_xyz_g26_20190104_239_4096x1716/

/featuretitle_lp_dcdm_sdr_xyz_g26_20190104_239_4096x1716.########.tiff


  

LUT Example:

chefs_table_s01_redlogfilm_dragoncolor2_TO_rec709_g24_100nits_FF.cube

 


 

Color Correction Projects

All available final color correction projects should be delivered (Examples: Resolve .drp, Baselight .blscene) 

 

 

Auxiliary Archival Assets

The following auxiliary assets are to be included with picture archive assets:

  1. Framing Chart
  2. Viewing Transforms
  3. Color Correction Projects

 


Change Log:

2019-04-12

  • Folder and File Naming Structure: Added "GAM" not required for Dynamic Range.

2018-06-19

  • Folder Structure: Removed "lp" designation for Longplay content. Requirement to include "Creation Date & Render #" in the folder structure has been removed. Requirements to list "Language version if other than OV" has been removed.
  • Folder Naming Examples: Updated to reflect new short/concise folder structure.
  • File Naming Examples: Updated to "File Sequence Naming" to provide clarity that guidelines in this section refer to the image sequence itself.

 

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