AI TV Show Maker

Delivery specs for landscape AI video, as each vendor states them

Broadcast term: BT.709 (Rec.709)

BT.709, often written Rec.709, is the ITU recommendation for HDTV parameters, including the colour primaries most standard-dynamic-range video uses. Version 6, from June 2015, is in force. From 3 source pages, read 2026-09-25; no maker pays to be listed.

BT.709: reference and vendor useBT.709, often written Rec.709, is the ITU recommendation for HDTV parameters, including the colour primaries most standard-dynamic-range video uses. Vendors whose figures use it: Runway.TermBT.709Defined for this sheet.ReferenceITU-R BT.709VendorsRunway
Fig. 1 Definitions written for the sheet; reference and vendor lines are quoted.

1Reference

Parameter values for the HDTV standards for production and international programme exchange

ITU, Recommendation BT.709

Parameter values for ultra-high definition television systems for production and international programme exchange

ITU, Recommendation BT.2020

On the sheet it appears as the colour space of a 10-bit SDR master.

YouTube converts unsupported colour spaces to BT.709 on upload.

Most AI video is delivered in BT.709 whether or not the vendor says so, because it is what H.264 and HEVC files default to without HDR signalling. The sheet does not assume that; it records BT.709 only where a vendor prints it.

The practical consequence is in the grade: a BT.709 clip placed in an HDR timeline has to be converted, and one placed in an SDR timeline needs no change.

Version 6 of the recommendation dates from June 2015; earlier versions are listed as superseded on the ITU page.

2Vendors whose figures use it

BT.709 in vendor figures, one line per tool, checked 2026-09-25.
ToolFigure as printed
Runway10-bit SDR Rec.709 masters and ProRes containers on Gen-4.5 and Aleph 2.0

Inclusion rule. Tools on the sheet whose recorded figure uses the term or its usual shorthand. Order. Alphabetical by tool name.

  • Recommendation page
    ITU-R BT.709 sets parameter values for HDTV; version 6 (06/2015) is in forceITU, Recommendation BT.709 / since 2015-06-01 / checked 2026-09-25
  • Recommendation page
    ITU-R BT.2020 sets parameter values for ultra-high definition television; version 2 (10/2015) is in forceITU, Recommendation BT.2020 / since 2015-10-01 / checked 2026-09-25
  • Professional and HDR output formats
    10-bit SDR Rec.709 masters and ProRes containers on Gen-4.5 and Aleph 2.0Runway Dev docs, available AI models / recorded 2026-09-25

3Adjacent terms

  • HDR and bit depth across twenty-nine tools

    • 4How one pipeline outputs it

    For a delivery question like “BT.709”, SceneMixer states the following about what it produces:

    The new name is written everywhere the old one stood: storyboard lines, episode titles and summaries, the scene lists and already-parsed dialogue.

    SceneMixer, Reusing a Character, Scene or Voice Across Projects — “What happens to the old name in the storyboard?” (read 2026-10-13)

    SceneMixer separates the script language from the production language: the output (episode outlines, storyboards, on-screen text) follows your interface language, and target-region localization adapts character names, casting, and scenery for Western, East Asian, Southeast Asian, or Latin American audiences.

    SceneMixer, Turn a Novel into a Video Series with AI — “Can I turn a Chinese web novel into an English-language drama?” (read 2026-10-13)