Builder

Overrides the feed-level fit for this item only.

Image shown while the item has no prepared player (far from the viewport).

Host actions for the right rail, top to bottom (max 6).

Splits the page into two stacked videos: the primary media on top, this one below. The secondary is always muted (the primary owns audio, progress, scrubbing and analytics), starts when the page becomes active, and pauses/resumes together with the primary.

Which half of a split-video page owns the audio (default PRIMARY). Exactly one half is ever audible — the feed's mute state applies to it; the other half is always muted. Scrubbing, progress and analytics stay with the primary regardless.

Marks this item as a sponsored/ad item (the vertical feed-feed ad model: the server inserts ad videos into the feed). The SDK shows a "Sponsored" chip, never loops it, and auto-advances when it ends.

Smaller second line under the title — creator name, description, hashtags.

Where this item's text renders; see TextPlacement.

Title shown bottom-left, bold (falls back to the media item's title).