NVDEC (formerly known as NVCUVID) is a feature in Nvidia graphics cards that performs video decoding, offloading this compute-intensive task from the CPU. NVDEC is a successor of PureVideo and is available in Kepler and later Nvidia GPUs.
It is accompanied by Nvidia NVENC for video encoding in Nvidia's Video Codec SDK.
Technology
NVDEC can offload video decoding to full fixed-function decoding hardware (
Nvidia PureVideo), or (partially) decode via
CUDA software running on the GPU, if fixed-function hardware is not available.
Depending on the GPU architecture, the following codecs are supported:
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MPEG-2
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VC-1
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H.264 (AVC)
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H.265 (HEVC)
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VP8
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VP9
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AV1
Versions
NVCUVID was originally distributed as part of the Nvidia CUDA Toolkit.
Later, it was renamed to NVDEC and moved to the Nvidia Video Codec SDK.
Operating system support
NVDEC is available for Windows and Linux operating systems.
As NVDEC is a proprietary API (as opposed to the open-source
VDPAU API), it is only supported by the proprietary Nvidia driver on Linux.
Application and library support
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Gstreamer has supported NVDEC since 2017.
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FFmpeg has supported NVDEC since 2017.
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mpv has supported NVDEC since 2017 by the use of FFmpeg.
GPU support
Hardware accelerated decode and
Nvidia NVENC are supported on Nvidia GeForce, Quadro, Tesla, and GRID products with Fermi or newer generation GPUs.
See also
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AMD Video Core Next, AMD's equivalent SIP core since 2018
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AMD Unified Video Decoder, AMD's equivalent SIP core up to 2017
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Intel Quick Sync Video, Intel's equivalent SIP core
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List of Nvidia graphics processing units
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Qualcomm Hexagon
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Nvidia NVENC
External links