CSAI

Client-Side Ad Insertion (CSAI) is a method used in digital video advertising where advertisements are dynamically inserted into video content at the user's device level. When a viewer is streaming video content, ad insertion takes place in real-time through the video player on the viewer's device, such as a smartphone, computer, or connected TV. This technique is commonly used in video on demand (VOD), live streaming, and over-the-top (OTT) media services.

In the CSAI process, when the video player reaches a predetermined point for ad insertion (usually marked by an ad cue point), it sends a request to an ad server. The ad server then selects appropriate advertisements based on various factors such as viewer demographics, viewing history, and contextual data. These selected ads are delivered to the video player, which temporarily pauses the main content to play the ads. Once the ads have concluded, the main video content resumes playback. This entire sequence is managed by the client-side software, typically using technologies like JavaScript or SDKs integrated into the video player.

While CSAI offers simplicity and ease of implementation, it does have some limitations. It can be more susceptible to ad blockers, and the transition between content and ads may not always be seamless, potentially leading to a less optimal viewer experience. Despite these challenges, CSAI remains a popular choice for many content providers due to its straightforward integration and the control it offers in managing ad delivery and user experience.

LINKS

• Bitmovin: https://bitmovin.com/csai-vs-ssai-client-side-server-side-ad-insertion

• THEOplayer: https://www.theoplayer.com/blog/csai-vs-ssai-what-are-the-differences

• Brightcove: https://sdks.support.brightcove.com/features/implementing-client-side-ads-native-sdks.html