Dub cards are video files that list voice actors who have played major roles in the dubbed audio track for a title. Prime Video supports the delivery of discrete assets for dub cards. Refer to the Supported Features table for dub card requirements by territory.
Prime Video accepts standalone video files at the same resolution and frame rate as the video mezzanine of the feature, which must meet the technical specifications outlined in the Video Technical Asset Requirements. Typically, dub cards run 36 seconds. The dub card video file must have at least one audio track, but it can be silent. Prime Video doesn't accept image dub cards.
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