vastlint
VAST-3.0-minmaxbitrate-pair

VAST-3.0-minmaxbitrate-pair

<MediaFile> must have both minBitrate and maxBitrate or neither

ErrorValuesIAB VAST 3.0 §2.4.1VAST 3.0, 4.0, 4.1, 4.2, and 4.3

Short answer

minBitrate and maxBitrate must be used together. Specifying one without the other leaves the range undefined.

Why this matters in production

This rule is usually a delivery blocker. Many players, SDKs, and ad servers will discard the response or skip the affected creative once this condition is hit. Value-format rules tend to fail at the moment a player interprets a field such as duration, skipoffset, bitrate, or versioning. They are especially painful because the XML can look valid at a glance. Affected scope: VAST 3.0, 4.0, 4.1, 4.2, and 4.3.

How to fix

Either provide both minBitrate and maxBitrate, or use the single bitrate attribute — not a mix of the two.

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