Unified Video Decoder

Unified Video Decoder (UVD, previously called Universal Video Decoder) is the name given to AMD's dedicated video decoding ASIC. There are multiple versions implementing a multitude of video codecs, such as H.264 and VC-1.

UVD was introduced with the Radeon HD 2000 Series and is integrated into some of AMD's GPUs and APUs. UVD occupies a considerable amount of the die surface at the time of its introduction[1] and is not to be confused with AMD's Video Coding Engine (VCE).

As of AMD Raven Ridge (released January 2018), UVD and VCE were succeeded by Video Core Next (VCN).

OverviewEdit

The UVD is based on an ATI Xilleon video processor, which is incorporated onto the same die as the GPU and is part of the ATI Avivo HD for hardware video decoding, along with the Advanced Video Processor (AVP). UVD, as stated by AMD, handles decoding of H.264/AVC, and VC-1 video codecs entirely in hardware.

The UVD technology is based on the Cadence Tensilica Xtensa[2] processor,[3][4][5] which was originally licensed by ATI Technologies Inc. in 2004.[6]

UVD/UVD+Edit

In early versions of UVD, video post-processing is passed to the pixel shaders and OpenCL kernels. MPEG-2 decoding is not performed within UVD, but in the shader processors. The decoder meets the performance and profile requirements of Blu-ray and HD DVD, decoding H.264 bitstreams up to a bitrate of 40 Mbit/s. It has context-adaptive binary arithmetic coding (CABAC) support for H.264/AVC.

Unlike video acceleration blocks in previous generation GPUs, which demanded considerable host-CPU involvement, UVD offloads the entire video-decoder process for VC-1 and H.264 except for video post-processing, which is offloaded to the shaders. MPEG-2 decode is also supported, but the bitstream/entropy decode is not performed for MPEG-2 video in hardware.

Previously, neither ATI Radeon R520 series' ATI Avivo nor NVidia Geforce 7 series' PureVideo assisted front-end bitstream/entropy decompression in VC-1 and H.264 - the host CPU performed this work.[7] UVD handles VLC/CAVLC/CABAC, frequency transform, pixel prediction and inloop deblocking, but passes the post processing to the shaders.[8] Post-processing includes denoising, de-interlacing, and scaling/resizing. AMD has also stated that the UVD component being incorporated into the GPU core only occupies 4.7 mm² in area on 65 nm fabrication process node.

A variation on UVD, called UVD+, was introduced with the Radeon HD 3000 series. UVD+ support HDCP for higher resolution video streams.[9] But UVD+ was also being marketed as simply UVD.

UVD 2Edit

The UVD saw a refresh with the release of the Radeon HD 4000 series products. The UVD 2 features full bitstream decoding of H.264/MPEG-4 AVC, VC-1, as well as iDCT level acceleration of MPEG2 video streams. Performance improvements allow dual video stream decoding and Picture-in-Picture mode. This makes UVD2 full BD-Live compliant.

The UVD 2.2 features a re-designed local memory interface and enhances the compatibility with MPEG2/H.264/VC-1 videos. However, it was marketed under the same alias as "UVD 2 Enhanced" as the "special core-logic, available in RV770 and RV730 series of GPUs, for hardware decoding of MPEG2, H.264 and VC-1 video with dual-stream decoding". The nature of UVD 2.2 being an incremental update to the UVD 2 can be accounted for this move.

UVD 3Edit

UVD 3 adds support for additional hardware MPEG2 decoding (entropy decode), DivX and Xvid via MPEG-4 Part 2 decoding (entropy decode, inverse transform, motion compensation) and Blu-ray 3D via MVC (entropy decode, inverse transform, motion compensation, in-loop deblocking).[10][11] along with 120 Hz stereo 3D support,[12] and is optimized to utilize less CPU processing power. UVD 3 also adds support for Blu-ray 3D stereoscopic displays.[citation needed]

UVD 4Edit

UVD 4 includes improved frame interpolation with H.264 decoder.[13] UVD 4.2 was introduced with the AMD Radeon Rx 200 series and Kaveri APU."X.ORG Radeon UVD (Unified Video Decoder) Hardware-UVD4.2: KAVERI, KABINI, MULLINS, BONAIRE, HAWAII". May 2016.

UVD 5Edit

UVD 5 was introduced with the AMD Radeon R9 285. New to UVD is full support for 4K H.264 video, up to level 5.2 (4Kp60).[14]

UVD 6Edit

The UVD 6.0 decoder and Video Coding Engine 3.1 encoder were reported to be first used in GPUs based on GCN 3, including Radeon R9 Fury series and "Carrizo"-APUs,[15][16] followed by AMD Radeon Rx 300 Series (Pirate Islands GPU family) and AMD Radeon Rx 400 Series (Arctic Islands GPU family).[17] The UVD version in "Fiji" and "Carrizo"-based graphics controller hardware is also announced to provide support for High Efficiency Video Coding (HEVC, H.265) hardware video decoding, up to 4K, 8-bits color (H.265 version 1, main profile);[18][19][20] and there is support for the 10bit-color HDR both H.265 and VP9 video codec in the AMD Radeon 400 series with UVD 6.3.[21][22][23]

UVD 7Edit

The UVD 7.0 decoder and Video Coding Engine 4.0 encoder are included in the Vega-based GPUs.[24][25] But there is still no fixed function VP9 hardware decoding.[26]

UVD 7.2Edit

AMD's Vega20 GPU, present in the Instinct Mi50, Instinct Mi60 and Radeon VII cards, include VCE 4.1 and two UVD 7.2 instances.[27][28]

VCN 1Edit

Starting with the integrated graphics of the Raven Ridge APU (Ryzen 2200/2400G), the former UVD and VCE have been replaced by the new "Video Core Next" (VCN). VCN 1.0 adds full hardware decoding for the VP9 codec.[29]

Format supportEdit

[30][29]

Unified Video Decoder and Video Core Next decoding/encoding support[30][29]
Implementation H.262
(MPEG-2)
H.263
(MPEG-4 ASP)
VC-1/WMV 9 H.264
(MPEG-4 AVC)
H.265
(HEVC)
VP9 AV1 JPEG Maximum resolution Color depth AMD Fluid Motion
Decoding Decoding Decoding Decoding Encoding Decoding Encoding Decoding Decoding Decoding Frame interpolation
UVD 1.0 RV610, RV630, RV670, RV620, RV635 No No Yes Yes No No No No No No 2K 8-bit No
UVD 2.0 RS780, RS880, RV770
UVD 2.2 RV710, RV730, RV740
UVD 2.3 Cedar, Redwood, Juniper, Cypress
UVD 3.0 Palm (Wrestler/Ontario), Sumo (Llano), Sumo2 (Llano) Yes Yes
UVD 3.1 Barts, Turks, Caicos, Cayman, Seymour
UVD 3.2 Aruba (Trinity/Richland), Tahiti VCE[A]
UVD 4.0 Cape Verde, Pitcairn, Oland Yes
UVD 4.2 Kaveri, Kabini, Mullins, Bonaire, Hawaii
UVD 5.0 Tonga 4K
UVD 6.0 Carrizo, Fiji Yes Yes
UVD 6.2 Stoney 10-bit
UVD 6.3 Polaris, VegaM, Lexa Yes
UVD 7.0 Vega10, Vega12
UVD 7.2 Vega20
VCN 1.0 Raven, Picasso Yes Yes
VCN 2.0 Navi10, Navi12, Navi14, Renoir, Cezanne 8K No
VCN 2.5 Arcturus
VCN 2.6 Aldebaran
VCN 3.0 Navi21, Navi22, Navi23, Navi24 Yes
VCN 3.1 Rembrandt No No No
Implementation Decoding Decoding Decoding Decoding Encoding Decoding Encoding Decoding Decoding Decoding Maximum resolution Color depth Frame interpolation
H.262
(MPEG-2)
H.263
(MPEG-4 ASP)
VC-1/WMV 9 H.264
(MPEG-4 AVC)
H.265
(HEVC)
VP9 AV1 JPEG AMD Fluid Motion
  1. ^ MPEG-4 AVC encoding by separate Video Coding Engine

AvailabilityEdit

Most of the Radeon HD 2000 series video cards implement the UVD for hardware decoding of 1080p high definition contents.[31] However, the Radeon HD 2900 series video cards do not include the UVD (though it is able to provide partial functionality through the use of its shaders), which was incorrectly stated to be present on the product pages and package boxes of the add-in partners' products before the launch of the Radeon HD 2900 XT,[citation needed] either stating the card as featuring ATI Avivo HD or explicitly UVD,[citation needed] which only the former statement of ATI Avivo HD is correct. The exclusion of UVD was also confirmed by AMD officials.[32]

UVD2 is implemented in the Radeon RV7x0 and R7x0 series GPUs. This also includes the RS7x0 series used for the AMD 700 chipset series IGP motherboards.

Feature overviewEdit

APUsEdit

The following table shows features of AMD's APUs (see also: List of AMD accelerated processing units).

Platform High, standard and low power Low and ultra-low power
Codename Server Basic Toronto
Micro Kyoto
Desktop Performance Raphael
Mainstream Llano Trinity Richland Kaveri Kaveri Refresh (Godavari) Carrizo Bristol Ridge Raven Ridge Picasso Renoir Cezanne
Entry
Basic Kabini Dalí
Mobile Performance Renoir Cezanne Rembrandt
Mainstream Llano Trinity Richland Kaveri Carrizo Bristol Ridge Raven Ridge Picasso Renoir
Lucienne
Cezanne
Barceló
Entry Dalí Mendocino
Basic Desna, Ontario, Zacate Kabini, Temash Beema, Mullins Carrizo-L Stoney Ridge Pollock
Embedded Trinity Bald Eagle Merlin Falcon,
Brown Falcon
Great Horned Owl Grey Hawk Ontario, Zacate Kabini Steppe Eagle, Crowned Eagle,
LX-Family
Prairie Falcon Banded Kestrel River Hawk
Released Aug 2011 Oct 2012 Jun 2013 Jan 2014 2015 Jun 2015 Jun 2016 Oct 2017 Jan 2019 Mar 2020 Jan 2021 Jan 2022 Sep 2022 Jan 2011 May 2013 Apr 2014 May 2015 Feb 2016 Apr 2019 Jul 2020 Jun 2022 Nov 2022
CPU microarchitecture K10 Piledriver Steamroller Excavator "Excavator+"[33] Zen Zen+ Zen 2 Zen 3 Zen 3+ Zen 4 Bobcat Jaguar Puma Puma+[34] "Excavator+" Zen Zen+ "Zen 2+"
ISA x86-64 x86-64
Socket Desktop Performance AM5
Mainstream AM4
Entry FM1 FM2 FM2+ FM2+[a], AM4 AM4
Basic AM1 FP5
Other FS1 FS1+, FP2 FP3 FP4 FP5 FP6 FP7 FT1 FT3 FT3b FP4 FP5 FT5 FP5 FT6
PCI Express version 2.0 3.0 4.0 5.0 2.0 3.0
CXL
Fab. (nm) GF 32SHP
(HKMG SOI)
GF 28SHP
(HKMG bulk)
GF 14LPP
(FinFET bulk)
GF 12LP
(FinFET bulk)
TSMC N7
(FinFET bulk)
TSMC N6
(FinFET bulk)
CCD: TSMC N5
(FinFET bulk)

cIOD: TSMC N6
(FinFET bulk)
TSMC N40
(bulk)
TSMC N28
(HKMG bulk)
GF 28SHP
(HKMG bulk)
GF 14LPP
(FinFET bulk)
GF 12LP
(FinFET bulk)
TSMC N6
(FinFET bulk)
Die area (mm2) 228 246 245 245 250 210[35] 156 180 210 75 (+ 28 FCH) 107 ? 125 149
Min TDP (W) 35 17 12 10 15 105 4.5 4 3.95 10 6 12 8
Max APU TDP (W) 100 95 65 45 170 18 25 6 54 15
Max stock APU base clock (GHz) 3 3.8 4.1 4.1 3.7 3.8 3.6 3.7 3.8 4.0 3.3 4.7 1.75 2.2 2 2.2 3.2 2.6 1.2 3.35 2.8
Max APUs per node[b] 1 1
Max core dies per CPU 1 2 1
Max CCX per core die 1 2 1 1
Max cores per CCX 4 8 2 4 2 4
Max CPU[c] cores per APU 4 8 16 2 4 2 4
Max threads per CPU core 1 2 1 2
Integer pipeline structure 3+3 2+2 4+2 4+2+1 1+3+3+1+2 1+1+1+1 2+2 4+2 4+2+1
i386, i486, i586, CMOV, NOPL, i686, PAE, NX bit, CMPXCHG16B, AMD-V, RVI, ABM, and 64-bit LAHF/SAHF    
IOMMU[d] v2 v1 v2
BMI1, AES-NI, CLMUL, and F16C    
MOVBE  
AVIC, BMI2, RDRAND, and MWAITX/MONITORX  
ADX, SHA, RDSEED, SMAP, SMEP, XSAVEC, XSAVES, XRSTORS, CLFLUSHOPT, CLZERO, and PTE Coalescing    
GMET, x2APIC, WBNOINVD, CLWB, QOS, PQE-BW, RDPID, RDPRU, and MCOMMIT    
MPK  
SGX
FPUs per core 1 0.5 1 1 0.5 1
Pipes per FPU 2 2
FPU pipe width 128-bit 256-bit 80-bit 128-bit 256-bit
CPU instruction set SIMD level SSE4a[e] AVX AVX2 AVX-512 SSSE3 AVX AVX2
3DNow! 3DNow!+
PREFETCH/PREFETCHW    
GFNI  
AMX
FMA4, LWP, TBM, and XOP    
FMA3    
L1 data cache per core (KiB) 64 16 32 32
L1 data cache associativity (ways) 2 4 8 8
L1 instruction caches per core 1 0.5 1 1 0.5 1
Max APU total L1 instruction cache (KiB) 256 128 192 256 512 64 128 96 128
L1 instruction cache associativity (ways) 2 3 4 8 2 3 4 8
L2 caches per core 1 0.5 1 1 0.5 1
Max APU total L2 cache (MiB) 4 2 4 16 1 2 1 2
L2 cache associativity (ways) 16 8 16 8
Max on--die L3 cache per CCX (MiB) 4 16 32 4
Max 3D V-Cache per CCD (MiB)
Max total in-CCD L3 cache per APU (MiB) 4 8 16 64 4
Max. total 3D V-Cache per APU (MiB)
Max. board L3 cache per APU (MiB)
Max total L3 cache per APU (MiB) 4 8 16 64 4
APU L3 cache associativity (ways) 16 16
L3 cache scheme Victim Victim
Max. L4 cache
Max stock DRAM support DDR3-1866 DDR3-2133 DDR3-2133, DDR4-2400 DDR4-2400 DDR4-2933 DDR4-3200, LPDDR4-4266 DDR5-4800, LPDDR5-6400 DDR5-5200 DDR3L-1333 DDR3L-1600 DDR3L-1866 DDR3-1866, DDR4-2400 DDR4-2400 DDR4-1600 DDR4-3200 LPDDR5-5500
Max DRAM channels per APU 2 1 2 1 2
Max stock DRAM bandwidth (GB/s) per APU 29.866 34.132 38.400 46.932 68.256 102.400 83200 10.666 12.800 14.933 19.200 38.400 12.800 51.200 88.000
GPU microarchitecture TeraScale 2 (VLIW5) TeraScale 3 (VLIW4) GCN 2nd gen GCN 3rd gen GCN 5th gen[36] RDNA 2nd gen TeraScale 2 (VLIW5) GCN 2nd gen GCN 3rd gen[36] GCN 5th gen RDNA 2nd gen
GPU instruction set TeraScale instruction set GCN instruction set RDNA instruction set TeraScale instruction set GCN instruction set RDNA instruction set
Max stock GPU base clock (MHz) 600 800 844 866 1108 1250 1400 2100 2400 400 538 600 ? 847 900 1200 600 1300 1900
Max stock GPU base GFLOPS[f] 480 614.4 648.1 886.7 1134.5 1760 1971.2 2150.4 3686.4 102.4 86 ? ? ? 345.6 460.8 230.4 1331.2 486.4
3D engine[g] Up to 400:20:8 Up to 384:24:6 Up to 512:32:8 Up to 704:44:16[37] Up to 512:32:8 768:48:8 128:?:? 80:8:4 128:8:4 Up to 192:12:8 Up to 192:12:4 192:12:4 Up to 512:?:? 128:?:?
IOMMUv1 IOMMUv2 IOMMUv1 ? IOMMUv2
Video decoder UVD 3.0 UVD 4.2 UVD 6.0 VCN 1.0[38] VCN 2.1[39] VCN 2.2[39] VCN 3.1 UVD 3.0 UVD 4.0 UVD 4.2 UVD 6.0 UVD 6.3 VCN 1.0 VCN 3.1
Video encoder VCE 1.0 VCE 2.0 VCE 3.1 VCE 2.0 VCE 3.1
AMD Fluid Motion            
GPU power saving PowerPlay PowerTune PowerPlay PowerTune[40]
TrueAudio  [41] ?  
FreeSync 1
2
1
2
HDCP[h] ? 1.4 1.4
2.2
? 1.4 1.4
2.2
PlayReady[h] 3.0 not yet 3.0 not yet
Supported displays[i] 2–3 2–4 3 3 (desktop)
4 (mobile, embedded)
4 2 3 4 4
/drm/radeon[j][43][44]    
/drm/amdgpu[j][45]  [46]  [46]
  1. ^ For FM2+ Excavator models: A8-7680, A6-7480 & Athlon X4 845.
  2. ^ A PC would be one node.
  3. ^ An APU combines a CPU and a GPU. Both have cores.
  4. ^ Requires firmware support.
  5. ^ No SSE4. No SSSE3.
  6. ^ Single-precision performance is calculated from the base (or boost) core clock speed based on a FMA operation.
  7. ^ Unified shaders : texture mapping units : render output units
  8. ^ a b To play protected video content, it also requires card, operating system, driver, and application support. A compatible HDCP display is also needed for this. HDCP is mandatory for the output of certain audio formats, placing additional constraints on the multimedia setup.
  9. ^ To feed more than two displays, the additional panels must have native DisplayPort support.[42] Alternatively active DisplayPort-to-DVI/HDMI/VGA adapters can be employed.
  10. ^ a b DRM (Direct Rendering Manager) is a component of the Linux kernel. Support in this table refers to the most current version.

GPUsEdit

The following table shows features of AMD/ATI's GPUs (see also: List of AMD graphics processing units).

Name of GPU series Wonder Mach 3D Rage Rage Pro Rage 128 R100 R200 R300 R400 R500 R600 RV670 R700 Evergreen Northern
Islands
Southern
Islands
Sea
Islands
Volcanic
Islands
Arctic
Islands
/Polaris
Vega Navi 1x Navi 2x Navi 3x
Released 1986 1991 Apr
1996
Mar
1997
Aug
1998
Apr
2000
Aug
2001
Sep
2002
May
2004
Oct
2005
May
2007
Nov
2007
Jun
2008
Sep
2009
Oct
2010
Jan
2012
Sep
2013
Jun
2015
Jun 2016, Apr 2017, Aug 2019 Jun 2017, Feb 2019 Jul
2019
Nov
2020
Dec
2022
Marketing Name Wonder Mach 3D
Rage
Rage
Pro
Rage
128
Radeon
7000
Radeon
8000
Radeon
9000
Radeon
X700/X800
Radeon
X1000
Radeon
HD 2000
Radeon
HD 3000
Radeon
HD 4000
Radeon
HD 5000
Radeon
HD 6000
Radeon
HD 7000
Radeon
200
Radeon
300
Radeon
400/500/600
Radeon
RX Vega, Radeon VII
Radeon
RX 5000
Radeon
RX 6000
Radeon
RX 7000
AMD support    
Kind 2D 3D
Instruction set architecture Not publicly known TeraScale instruction set GCN instruction set RDNA instruction set
Microarchitecture TeraScale 1
(VLIW)
TeraScale 2
(VLIW5)
TeraScale 2
(VLIW5)

up to 68xx
TeraScale 3
(VLIW4)

in 69xx [47][48]
GCN 1st
gen
GCN 2nd
gen
GCN 3rd
gen
GCN 4th
gen
GCN 5th
gen
RDNA RDNA 2 RDNA 3
Type Fixed pipeline[a] Programmable pixel & vertex pipelines Unified shader model
Direct3D 5.0 6.0 7.0 8.1 9.0
11 (9_2)
9.0b
11 (9_2)
9.0c
11 (9_3)
10.0
11 (10_0)
10.1
11 (10_1)
11 (11_0) 11 (11_1)
12 (11_1)
11 (12_0)
12 (12_0)
11 (12_1)
12 (12_1)
11 (12_1)
12 (12_2)
Shader model 1.4 2.0+ 2.0b 3.0 4.0 4.1 5.0 5.1 5.1
6.5
6.7 6.7
OpenGL 1.1 1.2 1.3 2.1[b][49] 3.3 4.5 (on Linux: 4.5 (Mesa 3D 21.0))[50][51][52][c] 4.6 (on Linux: 4.6 (Mesa 3D 20.0))
Vulkan 1.0
(Win 7+ or Mesa 17+)
1.2 (Adrenalin 20.1.2, Linux Mesa 3D 20.0)
1.3 (GCN 4 and above(with Adrenalin 22.1.2, Mesa 22.0))
1.3
OpenCL Close to Metal 1.1 (no Mesa 3D support) 1.2 (on Linux: 1.1 (no Image support) with Mesa 3D) 2.0 (Adrenalin driver on Win7+)
(on Linux: 1.1 (no Image support) with Mesa 3D, 2.0 with AMD drivers or AMD ROCm)
2.0 2.1 [53] ?
HSA / ROCm   ?
Video decoding ASIC Avivo/UVD UVD+ UVD 2 UVD 2.2 UVD 3 UVD 4 UVD 4.2 UVD 5.0 or 6.0 UVD 6.3 UVD 7 [24][d] VCN 2.0 [24][d] VCN 3.0 [54] ?
Video encoding ASIC VCE 1.0 VCE 2.0 VCE 3.0 or 3.1 VCE 3.4 VCE 4.0 [24][d]
Fluid Motion ASIC[e]       ?
Power saving ? PowerPlay PowerTune PowerTune & ZeroCore Power ?
TrueAudio Via dedicated DSP Via shaders ?
FreeSync 1
2
?
HDCP[f] ? 1.4 1.4
2.2
1.4
2.2
2.3 [55]
?
PlayReady[f] 3.0   3.0 ?
Supported displays[g] 1–2 2 2–6 ?
Max. resolution ? 2–6 ×
2560×1600
2–6 ×
4096×2160 @ 30 Hz
2–6 ×
5120×2880 @ 60 Hz
3 ×
7680×4320 @ 60 Hz [56]

7680×4320 @ 60 Hz PowerColor
?
/drm/radeon[h]   ?
/drm/amdgpu[h] Experimental [57]   ?
  1. ^ The Radeon 100 Series has programmable pixel shaders, but do not fully comply with DirectX 8 or Pixel Shader 1.0. See article on R100's pixel shaders.
  2. ^ R300, R400 and R500 based cards do not fully comply with OpenGL 2+ as the hardware does not support all types of non-power of two (NPOT) textures.
  3. ^ OpenGL 4+ compliance requires supporting FP64 shaders and these are emulated on some TeraScale chips using 32-bit hardware.
  4. ^ a b c The UVD and VCE were replaced by the Video Core Next (VCN) ASIC in the Raven Ridge APU implementation of Vega.
  5. ^ Video processing ASIC for video frame rate interpolation technique. In Windows it works as a DirectShow filter in your player. In Linux, there is no support on the part of drivers and / or community.
  6. ^ a b To play protected video content, it also requires card, operating system, driver, and application support. A compatible HDCP display is also needed for this. HDCP is mandatory for the output of certain audio formats, placing additional constraints on the multimedia setup.
  7. ^ More displays may be supported with native DisplayPort connections, or splitting the maximum resolution between multiple monitors with active converters.
  8. ^ a b DRM (Direct Rendering Manager) is a component of the Linux kernel. AMDgpu is the Linux kernel module. Support in this table refers to the most current version.

Operating system supportEdit

The UVD SIP core needs to be supported by the device driver, which provides one or more interfaces such as VDPAU, VAAPI or DXVA. One of these interfaces is then used by end-user software, for example VLC media player or GStreamer, to access the UVD hardware and make use of it.

AMD Catalyst, AMD's proprietary graphics device driver that supports UVD, is available for Microsoft Windows and some Linux distributions. Additionally, a free device driver is available, which also supports the UVD hardware.

LinuxEdit

 
Linux support for the UVD ASIC is provided by the Linux kernel device driver amdgpu.[58]

Support for UVD has been available in AMD's proprietary driver Catalyst version 8.10 since October 2008 through X-Video Motion Compensation (XvMC) or X-Video Bitstream Acceleration (XvBA).[59][60] Since April 2013,[61] UVD is supported by the free and open-source "radeon" device driver through Video Decode and Presentation API for Unix (VDPAU). An implementation of VDPAU is available as Gallium3D state tracker in Mesa 3D.

On 28 June 2014, Phoronix published some benchmarks on using Unified Video Decoder through the VDPAU interface running MPlayer on Ubuntu 14.04 with version 10.3-testing of Mesa 3D.[62]

WindowsEdit

Microsoft Windows supported UVD since it was launched. UVD currently only supports DXVA (DirectX Video Acceleration) API specification for the Microsoft Windows and Xbox 360 platforms to allow video decoding to be hardware accelerated, thus the media player software also has to support DXVA to be able to utilize UVD hardware acceleration.

OthersEdit

Support for running custom FreeRTOS-based firmware on the Radeon HD 2400's UVD core (based on an Xtensa CPU), interfaced with a STM32 ARM-based board via I2C, was attempted as of January 2012.[63]

Predecessors and SuccessorEdit

PredecessorsEdit

The Video Shader and ATI Avivo are similar technologies incorporated into previous ATI products.

SuccessorEdit

The UVD was succeeded by AMD Video Core Next in the Raven Ridge series of APUs released in October 2017. The VCN combines both encode (VCE) and decode (UVD).[64]

See alsoEdit

Video hardware technologiesEdit

NvidiaEdit

AMDEdit

IntelEdit

QualcommEdit

OthersEdit

NotesEdit

ReferencesEdit

  1. ^ "AMD A-Series APU block diagram". 2011-06-30. Retrieved 2015-01-22.
  2. ^ "Linux operating system on Xtensa processors".
  3. ^ Cheung, Ken (2009-01-08). "Consumer Electronics Show Features Tensilica-enabled Products". EDA Geek. Archived from the original on 2014-04-26. Retrieved 2014-05-15.
  4. ^ "Customer Profiles | Cadence IP". Ip.cadence.com. 2014-04-13. Retrieved 2014-05-15.
  5. ^ "Tensilica News: Excellent AMD ATI Video with Xtensa". tensilica.com. 2009-10-05. Retrieved 2014-05-15.
  6. ^ "ATI Licenses Tensilica's Xtensa Configurable Processor" (Press release). Business Wire. 2004-10-18. Retrieved 2014-05-15.
  7. ^ "HardSpell review" (in Chinese). Archived from the original on September 27, 2007.
  8. ^ Smith, Ryan (February 24, 2010). "AMD's Radeon HD 5450: The Next Step In HTPC Video Cards". AnandTech. AnandTech, Inc. p. 4. Retrieved April 7, 2010. Since deinterlacing and other AVIVO post-processing actions are done by the shader hardware, the limited shading capabilities of these cards meant that AMD couldn’t offer the full suite of AVIVO abilities at once.
  9. ^ (in Chinese) PC-DVD discussion thread, retrieved August 23, 2008
  10. ^ White Paper | AMD Unified Video Decoder (UVD)
  11. ^ "DailyTech - Radeon 6800 Series Launches, Targets GeForce GTX 460". Archived from the original on 2012-03-20. Retrieved 2013-09-01. by Jansen Ng, 10/21/2010 DailyTech
  12. ^ "AMD A6-3650 Llano APU Review - Page 5". Hardwarecanucks.com. Retrieved 2014-04-17.
  13. ^ Koen Crijns (14 January 2014). "AMD A10-7850K 'Kaveri' review: AMD's new APU". hardware.info.
  14. ^ Ryan Smith. "GCN 1.2 – Image & Video Processing - AMD Radeon R9 285 Review: Feat. Sapphire R9 285 Dual-X OC". anandtech.com.
  15. ^ "Guide to HEVC_H.265 Encoding and Playback". TechSpot.
  16. ^ "Key features of AMD's third iteration of GCN architecture revealed".
  17. ^ http://lists.freedesktop.org/archives/dri-devel/2015-June/084083.html [pull] amdgpu drm-next-4.2
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