The NVDECODE API also provides CUDA-optimized implementation of commonly used post-processing operations such as scaling, cropping, aspect ratio conversion, de-interlacing and color space conversion to many popular output video formats. With frames in video memory, video post processing can be done using CUDA. NVDEC decodes the compressed video streams and copies the resulting YUV frames to video memory. The software API, hereafter referred to as NVDECODE API lets developers access the video decoding features of NVDEC and interoperate NVDEC with other engines on the GPU.

NVIDIA provides software API and libraries for programming NVDEC. NVDEC runs completely independent of compute/graphics engine. NVDEC can be used for decoding bitstreams of various formats: AV1, H.264, HEVC (H.265), VP8, VP9, MPEG-1, MPEG-2, MPEG-4 and VC-1. NVIDIA GPUs - beginning with the NVIDIA® Fermi™ generation - contain a video decoder engine (referred to as NVDEC in this document) which provides fully-accelerated hardware video decoding capability.

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