Audio.protocols

The audio creative formats the player accepts, from AdCOM List: Creative Subtypes - Audio/Video, the same list Video uses. Recommended.

Currentinteger arrayRecommendedSince 2.4

Field facts

Path: imp.audio.protocols
Object: Audio
Type: integer array
Requirement: Recommended
Added: OpenRTB 2.4
Values: AdCOM list Creative Subtypes - Audio/Video
Spec section: 3.2.8

How it is used

Under 2.4 and 2.5 the Audio object assumed DAAST, values 9 and 10. DAAST was later merged into VAST 4.1, so a player that parses VAST 4.1 or later should list those versions (11 to 16, inline and wrapper) and add DAAST only if it still parses DAAST documents.

Allowed values

Value	Meaning
`1`	VAST 1.0: VAST 1.0 inline documents; the oldest entry and rare in current traffic.
`2`	VAST 2.0: VAST 2.0 inline documents, still a common baseline for web players.
`3`	VAST 3.0: VAST 3.0 inline documents, which introduced ad pods, skip offsets, and standard error codes.
`4`	VAST 1.0 Wrapper: VAST 1.0 Wrapper: a VAST 1.0 response that redirects to another VAST document.
`5`	VAST 2.0 Wrapper: VAST 2.0 Wrapper: a VAST 2.0 response that redirects to another VAST document.
`6`	VAST 3.0 Wrapper: VAST 3.0 Wrapper: a VAST 3.0 response that redirects to another VAST document.
`7`	VAST 4.0: VAST 4.0 inline documents, added to the list in OpenRTB 2.4.
`8`	VAST 4.0 Wrapper: VAST 4.0 Wrapper, added in OpenRTB 2.4.
`9`	DAAST 1.0: DAAST 1.0 inline, the separate audio template; audio support moved into VAST as of 4.1.
`10`	DAAST 1.0 Wrapper: DAAST 1.0 Wrapper: a DAAST response that redirects to another DAAST document.
`11`	VAST 4.1: VAST 4.1 inline documents, the version that brought audio into VAST. An AdCOM addition.
`12`	VAST 4.1 Wrapper: VAST 4.1 Wrapper. An AdCOM addition.
`13`	VAST 4.2: VAST 4.2 inline documents. An AdCOM addition.
`14`	VAST 4.2 Wrapper: VAST 4.2 Wrapper. An AdCOM addition.
`15`	VAST 4.3: VAST 4.3 inline documents, the newest version in the list. An AdCOM addition.
`16`	VAST 4.3 Wrapper: VAST 4.3 Wrapper. An AdCOM addition.

Example

Where the field sits in a payload, with everything else left out:

{
  "id": "req-1",
  "imp": [
    {
      "audio": {
        "protocols": [
          11,
          12,
          13,
          14
        ]
      }
    }
  ]
}

Common mistakes

Listing only DAAST values, which shuts out buyers that serve audio as VAST 4.1 or later.
Listing inline versions without their wrapper values, which shuts out bidders that return wrapper tags.

Version history

Added in OpenRTB 2.4, and present in the latest snapshot. The table shows how each version's spec text types the field.

Versions	Type in the spec	Required	Deprecated
2.4	integer array	Recommended	No
2.5	integer array	Recommended	No
2.6-202210 to 2.6-202606	integer array	Recommended	No

Related fields

Other Audio fields

For a walkthrough of the whole object, read Audio object guide.