If you're new to the DoubleClick In-Stream, here's how we recommend you get started:
DoubleClick In-Stream helps keep ad operations efficient by integrating with the trusted trafficking, targeting, forecasting and reporting features of the DART for Publishers (DFP) platform. DoubleClick In-Stream has support for industry standard formats including pre-rolls, overlays and companions as well IAB compliant reporting metrics. In addition, publishers can now enable the Google AdSense for video network to monetize their pre-emptible and unsold inventory in DFP.
DoubleClick In-Stream is only available for publishers using DoubleClick's DART for Publishers ad serving solution.
This site provides code and documentation for developers looking to include the DoubleClick In-Stream and AdSense for video framework within their video players.