Skype for Business client video resolutions - Skype for Business Server 2015 | Microsoft… Page 1 of 5
`
`Skype for Business client video resolutions
`Summary: Review the client video requirements while planning for Skype for Business
`Server.
`
`This article describes video hardware support for Skype for Business video calls and
`describes how to determine the expected video quality for various computer, tablet, and
`mobile device configurations.
`
`IT Professionals will find this information useful in assessing the suitability of laptops
`already in use in their organization, or under consideration for use. They can also search
`the Solutions Catalog for information on specific devices.
`
`Windows desktop, Mac and tablet video requirements
`and capabilities
`
`Skype for Business uses hardware acceleration for video encoding and decoding based on
`the H.264/MPEG­4 Part 10 Advanced Video Coding standard. This allows computers with
`lower CPU clock speeds to encode and decode higher resolution video. Video hardware
`requirements vary depending on the computer configuration and the video resolution
`wanted.
`
`Also see Windows and Mac hardware requirements.
`
`Video hardware requirements
`
`Feature
`Hardware accelerated
`H.264 decoding using
`DirectX Video
`Acceleration (DXVA)
`
`Video hardware requirements
`Requirement
`• Graphics card must support DirectX 9.0 and must expose the
`DXVA2_ModeH264_VLD_NoFGT decoding mode and the DirectX
`9 API.
`• The latest graphics card driver must be installed.
`The following Intel hardware accelerated video encoding
`solutions are supported:
`
`https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/clients-and-devic… 2/4/2021
`
`Apple v. Maxell
`IPR2020-00200
`Maxell Ex. 2025
`Page 1 of 5
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`Skype for Business client video resolutions - Skype for Business Server 2015 | Microsoft… Page 2 of 5
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`Feature
`Hardware accelerated
`H.264 encoding:
`Chipset Requirements
`
`Requirement
`• Second­ and third­generation Intel HD Graphics 2000, 2500,
`3000, and 4000 chipsets (or later versions) with integrated
`hardware video encoders. Installation of the Intel HD Graphics
`driver 15.28.9.2884 or the latest driver containing the following
`is required:
`• Display driver 9.17.10.2884 or the latest driver
`• Hardware media foundation transform (HMFT) version
`3.12.10.31 or the latest HMFT
`The following AMD hardware accelerated video encoding
`solutions are supported:
`• AMD Video Codec Engine, which is available in several discrete
`graphics cards and in integrated accelerated processing units of
`AMD A­Series Accelerated Processors. The AMD Video Codec
`Engine driver 9.12.0.0 or higher must be installed.
`USB video cameras with integrated H.264 hardware encoder that
`conforms to the USB Video Class (UVC) specification version 1.5.
`Note: Skype for Business supports UVC 1.5 cameras with
`Windows 8 or Windows 8.1, which includes support for UVC 1.5.
`Because Windows 7 does not include support for UVC 1.5, Skype
`for Business treats UVC 1.5 cameras as regular cameras with no
`hardware encoding support.
`Determining H.264 video encoding and decoding capabilities
`
`Hardware accelerated
`H.264 encoding:
`Camera Requirements
`
`Generally, there are four major factors that determine the maximum encoding and
`decoding capability of a particular computer configuration:
`
`• Support for hardware accelerated decoding by using DXVA
`
`• Support for hardware accelerated encoding
`
`• Number of physical cores
`
`• Windows Experience Index (WEI)
`
`The Windows System Assessment Tool (WinSAT) determines the WEI. When you run the
`WinSAT tool, it generates a Formal.Assessment XML document on the computer in the
`%windir%\Performance\WinSAT\DataStore directory. This XML file contains the follow­
`ing two scores that are of particular importance for determining encoding and decoding
`capabilities:
`
`https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/clients-and-devic… 2/4/2021
`
`Apple v. Maxell
`IPR2020-00200
`Maxell Ex. 2025
`Page 2 of 5
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`• The VideoEncodeScore indicates the software­based video encoding capability
`of the computer.
`
`• The GraphicsScore value indicates the hardware accelerated encoding capabil­
`ity of the computer.
`
`The following three tables explain the maximum encoding and decoding capability for
`different PC types depending on what hardware acceleration they support. For resolu­
`tions of 640x360 and higher, the maximum supported frame rate is 30 frames per
`second (fps). For resolutions lower than 640x360, the maximum supported frame rate is
`15 fps.
`
`Computer Without DXVA And Without Hardware Accelerated Encoder
`
`Capable Encoder
`Resolution
`
`424x240
`
`640x360
`
`640x360
`
`640x360
`
`1280x720
`
`1280x720
`
`1920x1080
`
`Table 2
`Capable Decoder Resolution
`
`424x240 (640x360 at 15fps for
`receive only scenarios)
`
`640x360
`
`1280x720
`
`1920x1080
`
`1280x720
`
`1920x1080
`
`1920x1080
`
`Requirement
`
`1 Core and
`VideoEncodeScore ≥ 4.0
`2 Cores and
`VideoEncodeScore ≥ 4.5
`2 Cores and
`VideoEncodeScore ≥ 4.5
`4 Cores and
`VideoEncodeScore ≥ 4.5
`4 Cores and
`VideoEncodeScore ≥ 7.3
`4 Cores and
`VideoEncodeScore ≥ 7.3
`N/A
`
`Computer With DXVA But Without Hardware Accelerated Encoder
`
`Capable Encoder
`Resolution
`
`Table 3
`Capable Decoder
`Resolution
`
`424x240
`
`640x360
`
`1920x1080
`
`1920x1080
`
`Requirement
`
`1 Core and VideoEncodeScore ≥
`3.0
`2 Cores and VideoEncodeScore
`≥ 4.5
`
`https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/clients-and-devic… 2/4/2021
`
`Apple v. Maxell
`IPR2020-00200
`Maxell Ex. 2025
`Page 3 of 5
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`Skype for Business client video resolutions - Skype for Business Server 2015 | Microsoft… Page 4 of 5
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`Capable Encoder
`Resolution
`960x540
`
`Capable Decoder
`Resolution
`1920x1080
`
`1280x720
`
`1920x1080
`
`Note
`
`1920x1080
`
`1920x1080
`
`Requirement
`2 Cores and VideoEncodeScore
`≥ 6.0
`4 Cores and VideoEncodeScore
`≥ 6.7
`4 Cores and VideoEncodeScore
`≥ 8.2
`
`The WinSAT score on Windows 7 is limited to a maximum of 7.9. Therefore, the encoding
`capability for a computer without a hardware accelerated encoder can only be achieved
`on Windows 8 or Windows 8.1, where the maximum WinSAT score is 9.9.
`
`Computer With DXVA And With Intel HD Graphics Hardware Accelerated
`Encoder
`
`Capable Encoder
`Resolution
`
`Table 4
`Capable Decoder
`Resolution
`
`Requirement
`
`1280x720
`
`1920x1080
`
`1920x1080
`
`1920x1080
`
`All 2nd and 3rd generation Intel HD
`Graphics
`2nd and 3rd generation Intel HD
`Graphics and GraphicsScore ≥ 5.0
`
`Mobile device video capabilities
`
`The following table describes the maximum video resolutions available on supported
`mobile devices. For more information about mobile device support, Mobile client feature
`comparison for Skype for Business.
`
`Feature
`
`H.264 encoding
`maximum
`resolution
`
`Mobile device video capabilities
`Windows
`iPhone
`iPad
`Phone
`VGA
`
`QVGA:
`iPhone 4S
`VGA: iPhone
`5
`
`VGA: iPad 2 and
`later/iPad mini 1 and
`later
`720p: iPad Air/iPad
`
`Android
`
`Up to VGA
`depending on
`device model
`
`https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/clients-and-devic… 2/4/2021
`
`Apple v. Maxell
`IPR2020-00200
`Maxell Ex. 2025
`Page 4 of 5
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`Skype for Business client video resolutions - Skype for Business Server 2015 | Microsoft… Page 5 of 5
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`Feature
`
`Windows
`Phone
`
`H.264 decoding
`maximum
`resolution
`
`VGA
`
`iPhone
`720p: iPhone
`5S and later
`QVGA:
`iPhone 4S
`VGA: iPhone
`5
`720p: iPhone
`5S and later
`
`iPad
`mini 2/iPad Pro and
`later
`VGA: iPad 2 and
`later/iPad mini 1 and
`later
`720p: iPad Air/iPad
`mini 2/iPad Pro and
`later
`
`Android
`
`Up to VGA
`depending on
`device model
`
`https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/clients-and-devic… 2/4/2021
`
`Apple v. Maxell
`IPR2020-00200
`Maxell Ex. 2025
`Page 5 of 5
`
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