Explore the journey of implementing stateless HEVC decoding in mainline Linux through this 18-minute conference talk. Delve into the challenges and complexities of developing a stable API for High Efficiency Video Coding (HEVC) decoding. Learn about the state-full flow, V412 controls, and the Request API. Understand the intricacies of defining the API, including hardware block requirements and the HEVC API in numbers. Discover the role of Fluster and ITU T-REC-H.265 in the process. Gain insights into the considerations and timeline for moving the API to a stable status, as presented by Benjamin Gaignard from Collabora at a Linux Foundation event.