Advanced Television

NABA and DPP new delivery specs

April 20, 2016

The North American Broadcasters Association (NABA) and the Digital Production Partnership (DPP) have unveiled two new technical specifications for the delivery of finished air-ready programmes for North America.

Through joint NABA and DPP meetings, nine of the major North American broadcasters – ABC/Disney, Bell Media, CBC/Radio-Canada, Fox, HBO, NBCUniversal, PBS, Time Warner and Turner – have agreed on a common file format, structure and wrapper based on the AS-11 UK DPP specification implemented in the UK in 2014.

“The key principle for this work was that the agreed specifications must be commonly defined, testable, unambiguous – and produce business value,” says Clyde Smith, Sr. VP, New Technology at Fox and the NABA technical lead. “The agreed common specifications will minimize confusion and expense for program-makers, and avoid the proliferation of different file types and specifications.”

The specifications are based on the Advanced Media Workflow Association (AMWA) AS-11 specification, with the following features:

• File format: MXF OP-1A
• Video Encoding: MPEG-2 XDCam or AVC/H.264
• Video Signal Standard: 1080i or 720p
• Colour Sub Sample: 4:2:2 or 4:2:0
• Audio: Supports a common fixed channel assignment and Dynamic assignment of Audio Tracks
• A minimal editorial metadata set

“The announcement of these new specifications represents notice to the industry that will enable production and post-production companies and equipment manufacturers to ready themselves for the transition to common specifications,” says NABA Director-General Michael McEwen.

Categories: Articles, Standards