To enable a client to assess the performance of their video on a social media advertisement, I would begin by identifying the essential metrics related to video performance. These metrics might include views, likes, shares, comments, watch time, click-through rates, and conversions, especially if the ad features a call to action. I would then utilize APIs from the social media platform, such as the Facebook Graph API or Instagram Basic Display API, to collect these metrics. After gathering the data, I would create a dashboard that presents this information in a clear and accessible format. The dashboard could feature graphs and charts to illustrate data trends over time, tables for detailed information, and key metrics emphasized for quick reference. Additionally, we could offer daily, weekly, or monthly reports based on the client's requirements. Business intelligence tools like Tableau or Power BI could be used to develop this dashboard, or we could build a custom solution if needed.