你的客戶想在三家運動內容發布商的網站上放送運動鞋廣告活動，但每家發布商對影片廣告素材規格的要求都不同。一家只接受 300x250 隨播廣告，另一家要求使用 VAST 和 VPAID 代碼，最後一家則尚未提供規格。 請問你該如何投放這個廣告活動？

The correct answer is to use the publisher specifications library to efficiently transcode video. Campaign Manager 360's publisher specifications library allows you to input and store the unique video ad requirements for each publisher. This enables the system to automatically transcode your video assets into the correct formats and sizes for each publisher, streamlining the trafficking process and ensuring compliance with their diverse specifications. Waiting for publishers to provide identical specifications is unrealistic, as each often has unique requirements. Waiting for all specifications is necessary, but the library is the tool to manage the diversity. Using a single placement for all three publishers would not work because their varied specifications demand different ad creatives or settings.