epiphan video AV.io 4K, Руководство пользователя

Страница: 27 / 52

AV.io 4K User Guide User modes
9. If needed, you may follow the same process for User mode 2 and User mode 3 . If all three are
checked and applied, all three custom resolutions selected will appear in the list of resolutions. You may
change the definition of any of these three resolutions at any time.
There are two scenarios in which this feature will not perform as expected.
1. Not all third-party applications are able to support custom resolutions. AV.io 4K will send the custom
resolution to the application, but if it is unable to use the resolution, the application will override any
AV.io 4K custom capture settings.
2. In a Windows environment, due to restrictions set by Microsoft’s Windows Hardware Quality Labs
certification, most graphics adapters or drivers will not output resolutions not included in the EDID file
of the connected display device. In the scenario where a resolution that is not included in the AV.io 4K
standard resolution is requested, the Graphics adapter and driver will apply the resolution requested
and then upscale it to AV.io 4K’s default resolution. This means the
User modes feature will not add
the custom resolutions to the UVC descriptor and the capture software will be limited to the pre-
defined resolutions.
Outside of these restrictions, the feature is recommended in any scenario where you wish to use a custom
output resolution.
18