What critical element is most frequently omitted when writing effective video descriptions?

The critical element most frequently omitted when writing effective video descriptions is a clear and compelling call to action (CTA). While descriptions often include keywords and summaries, a specific CTA guides viewers on what to do next, encouraging further engagement. This could include subscribing to the channel, watching another related video, visiting a website or social media page, or leaving a comment. Without a CTA, viewers may simply watch the video and leave, missing opportunities to deepen their engagement with the channel and its content. A well-defined CTA directly contributes to increased watch time, subscriber growth, and overall channel performance.