This article details practical issues encountered when using Intel QSV hardware encoding with FFmpeg: H.264/H.265 video streams encoded with QSV only display keyframes on Hikvision DVRs, while P-frames fail to render properly. Through comparative testing, the author discovered that Nvidia NVENC hardware encoding doesn’t experience this problem. The article provides an in-depth analysis of the root cause, along with complete code examples and solutions, including special parameter configurations for Intel QSV encoders such as forcing baseline profile usage, enabling CAVLC entropy encoding, and setting appropriate levels. These optimization measures effectively improve the compatibility of QSV-encoded video streams with Hikvision devices, addressing pain points encountered in actual development. For developers who need to use Intel integrated graphics for video encoding and stream to Hikvision devices, this article offers valuable reference material and practical solutions.
