VAST macros / Playback and timing
[CONTENTPLAYHEAD] VAST macro
Short answer: Deprecated playhead macro; use [ADPLAYHEAD] instead. Introduced in VAST 3.0. Deprecated as of VAST 4.1.
Deprecated: use [ADPLAYHEAD] instead. Newer players may not substitute [CONTENTPLAYHEAD].
What it means
The pre-4.1 playhead macro. It was ambiguous about whether it referred to ad or content time, so VAST 4.1 deprecated it in favour of [ADPLAYHEAD]. Newer players may not populate it.
Example value
After the player substitutes the macro, [CONTENTPLAYHEAD] becomes something like:
00:00:07.500Where it is valid
Legacy tracking and error URLs. Deprecated as of VAST 4.1.
Macros are case-sensitive and substituted only inside URL fields. A macro written in the wrong case, or placed where it has no defined value, is sent to the server as literal text instead of a value.
Using it in a tag
<Impression><![CDATA[https://t.example.com/i?val=[CONTENTPLAYHEAD]&cb=[CACHEBUSTING]]]></Impression>VAST XML fragment only. This excerpt belongs inside a complete VAST document, so standalone validation will fail until it is wrapped in a full <VAST>response.
Related vastlint rules
- VAST-2.0-macro-unknown: URL contains a [MACRO] that is not a recognised IAB VAST macro
- VAST-2.0-macro-lowercase: Recognised macro is not uppercase — players match macro names case-sensitively
- VAST-4.1-macro-deprecated: [CONTENTPLAYHEAD]/[MEDIAPLAYHEAD] are deprecated as of VAST 4.1 — use [ADPLAYHEAD]
Related macros
- [ADPLAYHEAD]: The current playhead position within the ad creative.
- [MEDIAPLAYHEAD]: Deprecated playhead macro; use [ADPLAYHEAD] instead.
Validate your macros
vastlint flags unknown, mis-cased, deprecated, out-of-context, and unencoded macros in any tracking, click, error, impression, or media URL:
# CLI: exits non-zero on errors, ideal for pipelines
vastlint check creative.xmlUse the right tool for this failure
If you already have the resolved XML, run a pure spec check. If you only have a live tag URL, test that endpoint first. If the failure happens in the wrapper chain, inspect each hop.