From new NBER Working paper:

We leverage novel advertising video data and apply new empirical methods to study how banks actively use advertising to build their images, align with their operational strengths, market positions, and the demographics of target customers. These image-building efforts have significant impacts on the demand for a bank’s financial products and franchise value, and the mechanism interacts with the transmission of monetary policy.
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We present evidence that unsupervised video embedding clustering can robustly and efficiently encode video content, extending beyond prior work such as Hu and Ma (2025), which primarily focused on constructing measurements from individual content channels.