OptionalvpaidHow IMA runs VPAID (interactive JavaScript) creatives:
"enabled" (default) — VPAID in a secure cross-origin iframe."insecure" — VPAID in a friendly iframe. Some ad servers (e.g.
FreeWheel networks) traffic VPAID creatives that stall in the secure
sandbox, especially on plain-http origins; insecure mode lets them run."disabled" — VPAID creatives error out and are skipped.
Options for ImaAdsProvider.