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Primary Digital Asset Specifications


IMF Packaging

All deliveries to Netflix must be compliant to either SMPTE ST 2067-21:2016 or SMPTE ST 2067-21:2020 Interoperable Master Format (IMF) Application #2E. Packages containing immersive sound must additionally comply with SMPTE ST 2067-201:2019 Immersive Audio Bitstream (IAB) Level 0 Plug-in.

 

IMF packages must be created from the Video Display Master (VDM), or directly out of a capable color grading tool, and must be delivered in the highest quality and resolution including High Definition (HD) and Ultra High Definition (UHD). Netflix may explicitly request other resolutions.

 

The final IMF package must contain the following:

  • 1 Asset Map XML file

  • 1 Packing List XML file

  • 1 or more Composition Playlist (CPL) XML file(s), representing a single audio language each, containing

    • 1 image virtual track

    • 1 IAB virtual track

    • 0 or 1 surround audio virtual track (6 channels)

    • 0 or 1 stereo audio virtual track (2 channels)

    • 1 image virtual track

    • 1 surround audio virtual track (6 channels)

    • 0 or 1 stereo audio virtual track (2 channels)

    • For titles mixed in Dolby Atmos®

    • For titles mixed in 5.1 surround

  • All MXF Track Files referenced from the ingested CPL, that have not previously been delivered

  • Volume Index and Output Profile List XML files may be present, but are not required

 

For Dolby Atmos® titles delivered in IMF, 5.1 and 2.0 are optional tracks to be delivered within the IMF. 5.1 audio is required as a separate Content Hub delivery for dubbing reference only. Deliveries containing only image and IAB tracks, i.e. no stereo/surround audio track(s), must be compliant to SMPTE ST 2067-21:2020 (since the absence of channel based audio tracks is not supported by the 2016 edition of the standard). 

 

Special consideration must be taken for 29.97 or 59.94 IMF deliverables. The total number of frames contained within a 29.97 or 59.94 IMF CPL Segment must be divisible by 5 to preserve integer value audio samples. If necessary, trim the picture and audio by the required number of frames (1, 2, 3, or 4) before wrapping IMF to ensure total frames per Segment are divisible by 5.

 

Note: Track​ ​files​ ​containing​ timed text ​essence​ ​​are​ ​not currently​ ​supported.

 

Video

General

  • Video must consist of the feature program with one (1) second of black and silence at the head and tail of the program. 

  • Video must not contain commercial blacks.

  • Video must not contain color bars, bumpers,​ ​segment​ ​recaps​ ​or​ ​previews, advertisements, slates, ratings cards, FBI warning cards, VITC time code, placards, overlay branding or website link callouts before, during and/or after the program. URLs present during end credits are permissible. 

  • Video must be non-subtitled. Netflix defines “non-subtitled” as the presence of main titles, end credits, narrative text, location call-outs, and other supportive/creative text, but no burned-in subtitled dialog, regardless of the language in the primary video. This does not apply to textless IMF deliveries (see Section 7).

  • Track​ files​ ​containing​ ​image​ ​essence​ ​mastered​ ​in​ ​Dolby​ ​VisionTM​ ​must embed dynamic metadata for color volume transform ​within​ ​​a ​single​ ​track​ ​file.​ At a minimum, L1 Dolby VisionTM metadata must be present for every frame in the track file. Note:​ ​We​ ​do​ ​not​ ​support​ ​material​ ​mastered​ only for​ ​HDR-10 distribution. 

 

UHD

UHD Image Track

Image Frame Width

3840

Image Frame Height

2160

Color Encoding

RGB / 4:4:4 / Full Range

Frame Rates

23.976 / 24 / 25 / 29.97 / 30 / 50 / 59.94 / 60

Frame Structure

Progressive

Stereoscopy

Monoscopic

JPEG 2000 Profile

Frame rates up to 30 fps use:

  • 4k IMF Single Tile Lossy Profile Mainlevel 6 Sublevel 3 (max 800 Mbit/s)

Frame rates above 30 fps use:

  • 4k IMF Single Tile Lossy Profile Mainlevel 7 Sublevel 4 (max 1600 Mbit/s)

Dynamic Range

Dolby VisionTM HDR

SDR

Colorimetry

P3 D65 / SMPTE ST 2084 (PQ)

ITU-R BT.709 / D65 / ITU-R BT.1886 (Gamma 2.4)

Pixel Bit Depth

12-bit

10-bit

Mastering Display Color Volume Metadata

SMPTE ST-2086

n/a

Dynamic Metadata for Color Volume Transformation

Dolby VisionTM CM 2.9 or CM 4.0 mastering metadata.

n/a

HD

HD Image Track

Image Frame Width

1920

Image Frame Height

1080

Color Encoding

RGB / 4:4:4 / Full Range

Frame Rates

23.976 / 24 / 25 / 29.97 / 30 / 50 / 59.94 / 60

Frame Structure

Progressive

Stereoscopy

Monoscopic

JPEG 2000 Profile

Frame rates up to 30 fps use:

  • 2k IMF Single Tile Lossy Profile Mainlevel 4 Sublevel 2 (max 400 Mbit/s)

Frame rates above 30 fps use:

  • 2k IMF Single Tile Lossy Profile Mainlevel 5 Sublevel 3 (max 800 Mbit/s)

Dynamic Range

Dolby VisionTM HDR

SDR

Colorimetry

P3 D65 / SMPTE ST 2084 (PQ)

ITU-R BT.709 / D65 / ITU-R BT.1886 (Gamma 2.4)

Pixel Bit Depth

12-bit

10-bit

Mastering Display Color Volume Metadata

SMPTE ST-2086

n/a

Dynamic Metadata for Color Volume Transformation

Dolby VisionTM CM 2.9 or CM 4.0 mastering metadata.

n/a

 

Audio

Immersive Audio

Audio Track (Atmos®)

Sample Rate

48 kHz

Bit Depth

24-bit

Channel Mapping

  • All bed configurations are acceptable

  • For all series/doc/unscripted/comedy content, beds and objects must be separated by Dialog, Music and Effects. For film content, DME separation should be maintained whenever possible

Surround Audio

Audio Track (5.1 Surround)

Sample Rate

48 kHz

Bit Depth

24-bit

Channel Mapping

  • Channel 1 – Left

  • Channel 2 – Right

  • Channel 3 – Center

  • Channel 4 – LFE

  • Channel 5 – Left Surround

  • Channel 6 – Right Surround

Stereo Audio

Audio Track (2.0 Stereo)

Sample Rate

48 KHz

Bit Depth

24-bit

Channel Mapping

  • Channel 1 – Stereo Left

  • Channel 2 – Stereo Right

 

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