NVIDIA VIDEO CODEC SDK | 易学教程

A comprehensive set of APIs for hardware accelerated video encode and decode on Windows and Linux.

NVIDIA GeForce Now is made possible by leveraging NVENC in the datacenter and streaming the result to end clients

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NVEncode

NVDecode

The Video Codec SDK includes a complete set of APIs, samples and documentation for hardware accelerated video encode and decode on Windows and Linux.

The SDK consists of two hardware acceleration interfaces:

NVENCODE API for video encode acceleration
NVDECODE API for video decode acceleration (formerly called NVCUVID API)

NVIDIA GPUs contain one or more hardware-based decoder and encoder(s) (separate from the CUDA cores) which provides fully-accelerated hardware-based video decoding and encoding for several popular codecs. With decoding/encoding offloaded, the graphics engine and the CPU are free for other operations.

GPU hardware accelerator engines for video decoding (referred to as NVDEC) and video encoding (referred to as NVENC) support faster than real-time video processing which makes them suitable to be used for transcoding applications, in addition to video playback.

* Diagram represents support for the NVIDIA Turing GPU family
** 4:2:2 is not natively supported on HW
*** Support is codec dependent

Architecture	x64 and ppc64le
Operating System	Windows 7, 8, 10, Server 2008 R2, Server 2012, and Linux
Dependencies	NVENCODE API - NVIDIA Quadro, Tesla, GRID or GeForce products with Kepler, Maxwell, Pascal and Turing generation GPUs. NVDECODE API - NVIDIA Quadro, Tesla, GRID or GeForce products with Fermi, Kepler, Maxwell, Pascal and Turing generation GPUs. GPU Support Matrix NVIDIA Linux display driver 418.30 or newer NVIDIA Windows display driver 418.81 or newer DirectX SDK (Windows only) CUDA 10.0 Toolkit
Development Environment	Windows: Visual Studio 2010/2013/2015 Linux: gcc 4.8 or higher

What's new with Turing GPUs and Video Codec SDK 9.0

Up to 3x Decode throughput with multiple decoders on professional cards (Quadro & Tesla)
Higher Quality Encoding - H.264 & H.265 (Refer to devblog for more details)
Higher encoding efficiency (15% lower bitrate than Pascal)
HEVC B-frames support
HEVC 4:4:4 decoding support

Decode

For a full list of GPUs, encode formats and number of encoders and decoders, please refer to the: GPU Support Matrix.

Encode

Get NVIDIA Video Codec SDK

If you are looking to make use of the dedicated decoding/encoding hardware on your GPU in an existing application you can leverage the integration already available in the FFmpeg/libav. FFmpeg/libav should be used for evaluation or quick integration, but it may not provide control over every encoder parameter. NVDECODE and NVENCODE APIs should be used for low-level granular control over various encode/decode parameters and if you want to directly tap into the hardware decoder/encoder. This access is available through the Video Codec SDK.

For application users

Cross-platform solution to record, convert and stream audio and video. Includes NVIDIA Video Hardware Acceleration

Hardware acceleration for most popular video framework
Leverages FFmpeg’s Audio codec, stream muxing, and RTP protocols
Available for Windows, Linux
You can now use FFMPEG to accelerate video encoding and decoding using NVENC and NVDEC, respectively.
Turing support coming soon

Learn more about FFMPEG

For application developers

Download Video Codec SDK 9.0

To download, you must be a member of NVIDIA Developer - DesignWorks.

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

All supported OS and architectures
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Key Features of Video Codec SDK

NVENC - Hardware-Accelerated Video Encoding

NVIDIA GPUs - beginning with the Kepler generation - contain a hardware-based encoder (referred to as NVENC) which provides fully-accelerated hardware-based video encoding and is independent of graphics performance. With complete encoding (which is computationally complex) offloaded to NVENC, the graphics engine and the CPU are free for other operations. For example, in a game recording scenario, encoding being completely offloaded to NVENC makes the graphics engine bandwidth fully available for game rendering.

GPU	H.264 (AVCHD) YUV 4:2:0	H.264 (AVCHD) YUV 4:4:4	H.264 (AVCHD) LOSSLESS	H.265 (HEVC) YUV 4:2:0	H.265 (HEVC) YUV 4:4:4	H.265 (HEVC) LOSSLESS
MAX Color	MAX Res.	MAX Color	MAX Res.	MAX Color	MAX Res.	MAX Color	MAX Res.	MAX Color	MAX Res.	MAX Color	MAX Res.
Kepler	8-bit	4096 x 4096	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Maxwell (1st Gen)*	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096	N/A	N/A	N/A	N/A	N/A	N/A
Maxwell (2nd Gen)	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096	N/A	N/A	N/A	N/A
Maxwell (GM206)	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096
Pascal	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096	10-bit	8192 x 8192**	10-bit	8192 x 8192**	10-bit	8192 x 8192**
Volta	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096	10-bit	8192 x 8192	10-bit	8192 x 8192	10-bit	8192 x 8192
Turing	8-bit	4096 x 4096	8-bit	4096 x 4096	8-bit	4096 x 4096	10-bit	8192 x 8192	10-bit	8192 x 8192	10-bit	8192 x 8192

* Except GM108 and GP108 (not supported)
** Except GP100 (is limited to 4K resolution)

For a full list of GPUs, encode formats and number of encoders and decoders, please refer to the: GPU Support Matrix.

Performance: 5X Increase over x264(CPU)

* Performance represents measured average performance and quality of different classes of videos (camcorder, gaming, screen, synthetic, and telepresence). Performance may vary based on OS and software versions, and motherboard configuration.

More Performance Results

Performance represents an approximation of max performance and may vary based on GPU clock speed, OS, software versions, and motherboard configuration.

NVDEC - Hardware-Accelerated Video Decoding

NVIDIA GPUs contain a hardware-based decoder (referred to as NVDEC) which provides fully-accelerated hardware-based video decoding for several popular codecs. With complete decoding offloaded to NVDEC the graphics engine and the CPU are free for other operations. NVDEC supports much faster than real-time decoding which makes it suitable to be used for transcoding applications, in addition to video playback applications.

NVDECODE API enables software developers to configure this dedicated hardware video decoder. This dedicated accelerator supports hardware-accelerated decoding of the following video codecs on Windows and Linux platforms: MPEG-2, VC-1, H.264 (AVCHD), H.265 (HEVC), VP8, VP9 (see table below for codec support for each GPU generation).

GPU	*H.265 (HEVC) 4:4:4	H.265 (HEVC) 4:2:0	H.264 (AVCHD) 4:2:0	VP9	VP8	MPEG-2	VC-1
MAX Color	MAX Res.	MAX Color	MAX Res.	MAX Color	MAX Res.	MAX Color	MAX Res.	MAX Color	MAX Res.	MAX Color	MAX Res.	MAX Color	MAX Res.
Kepler	N/A	N/A	N/A	N/A	8-bit	4096 x 4096	N/A	N/A	N/A	N/A	8-bit	4080 x 4080	8-bit	2048 x 1024
Maxwell (1st Gen)*	N/A	N/A	N/A	N/A	8-bit	4096 x 4096	N/A	N/A	N/A	N/A	8-bit	4080 x 4080	8-bit	2048 x 1024
Maxwell (2nd Gen)	N/A	N/A	N/A	N/A	8-bit	4096 x 4096	N/A	N/A	8-bit	4096 x 4096	8-bit	4080 x 4080	8-bit	2048 x 1024
Maxwell (GM206)	N/A	N/A	10-bit	4096 x 2304	8-bit	4096 x 4096	8-bit	4096 x 2304	8-bit	4096 x 4096	8-bit	4080 x 4080	8-bit	2048 x 1024
Pascal	N/A	N/A	12-bit	8192 x 8192**	8-bit	4096 x 4096	12-bit****	8192 x 8192**	8-bit	4096 x 4096***	8-bit	4080 x 4080	8-bit	2048 x 1024
Volta	N/A	N/A	12-bit	8192 x 8192	8-bit	4096 x 4096	12-bit	8192 x 8192	8-bit	4096 x 4096	8-bit	4080 x 4080	8-bit	2048 x 1024
Turing	12-bit	8192 x 8192	12-bit	8192 x 8192	8-bit	4096 x 4096	12-bit	8192 x 8192	8-bit	4096 x 4096	8-bit	4080 x 4080	8-bit	2048 x 1024

* Except GM108 (not supported)
** Max resolution support is limited to selected Pascal chips
*** VP8 decode support is limited to selected Pascal chips
**** VP9 10/12 bit decode support is limited to select Pascal chips

For a full list of GPUs, decode formats and number of encoders and decoders, please see the available GPU Support Matrix.

Performance

For convenience, NVDECODE API documentation and sample applications are also included in the CUDA Toolkit, in addition to the Video Codec SDK.

Note: For Video Codec SDK 7.0 and later, NVCUVID has been renamed to NVDECODE API.

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