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doc/ffmpeg: update the documentation about vaapi device creation

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Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
Signed-off-by: Paul B Mahol <onemda@gmail.com>
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Haihao Xiang 2024-01-16 13:23:11 +08:00 committed by Paul B Mahol
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commit 8bb1d169e6
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doc/ffmpeg.texi
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@ -1364,6 +1364,29 @@ If not specified, it will attempt to open the default X11 display (@emph{$DISPLA
and then the first DRM render node (@emph{/dev/dri/renderD128}), or the default and then the first DRM render node (@emph{/dev/dri/renderD128}), or the default
DirectX adapter on Windows. DirectX adapter on Windows.
The following options are recognized:
@table @option
@item kernel_driver
When @var{device} is not specified, use this option to specify the name of the kernel
driver associated with the desired device. This option is available only when
the hardware acceleration method @emph{drm} and @emph{vaapi} are enabled.
@end table
Examples:
@table @emph
@item -init_hw_device vaapi
Create a vaapi device on the default device.
@item -init_hw_device vaapi:/dev/dri/renderD129
Create a vaapi device on DRM render node @file{/dev/dri/renderD129}.
@item -init_hw_device vaapi:1
Create a vaapi device on DirectX adapter 1.
@item -init_hw_device vaapi:,kernel_driver=i915
Create a vaapi device on a device associated with kernel driver @samp{i915}.
@end table
@item vdpau @item vdpau
@var{device} is an X11 display name. @var{device} is an X11 display name.
If not specified, it will attempt to open the default X11 display (@emph{$DISPLAY}). If not specified, it will attempt to open the default X11 display (@emph{$DISPLAY}).