Validating Asset Bindings Before Building a Seedance Video Request

A video brief can reference the latest lamp image while the request builder still points to an older one, producing valid-looking JSON with a mismatched asset. The article argues that the relationship between a brief and its selected assets should be checked before translating a local brief into a provider request. It proposes a Python function that verifies unique asset IDs, unique local roles, existing asset references, matching revisions, and matching media kinds. Failures raise explicit errors so the writer must decide whether to update the brief or restore the intended asset, rather than silently substituting a "latest" version. The author notes the approach is an internal design, not an official Seedance schema, and that provider-specific support should be checked separately in an adapter layer.