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manpage: some --hwdec corrections 

auto-copy selects more modes than the ones listed. It will always be
outdated anyway.

The GLX vaapi backend is never selected anymore, because it sucks.
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wm4 2017-09-26 22:19:48 +02:00
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7
DOCS/man/options.rst
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@ -695,17 +695,14 @@ Video
next method (might matter on some Linux systems). next method (might matter on some Linux systems).
``auto-copy`` selects only modes that copy the video data back to system ``auto-copy`` selects only modes that copy the video data back to system
memory after decoding. Currently, this selects only one of the following memory after decoding. This selects modes like ``vaapi-copy`` (and so on).
modes: ``vaapi-copy``, ``dxva2-copy``, ``d3d11va-copy``, ``mediacodec``.
If none of these work, hardware decoding is disabled. This mode is always If none of these work, hardware decoding is disabled. This mode is always
guaranteed to incur no additional loss compared to software decoding, and guaranteed to incur no additional loss compared to software decoding, and
will allow CPU processing with video filters. will allow CPU processing with video filters.
The ``vaapi`` mode, if used with ``--vo=gpu``, requires Mesa 11 and most The ``vaapi`` mode, if used with ``--vo=gpu``, requires Mesa 11 and most
likely works with Intel GPUs only. It also requires the opengl EGL backend likely works with Intel GPUs only. It also requires the opengl EGL backend
(automatically used if available). You can also try the old GLX backend by (automatically used if available).
forcing it with ``--gpu-context=x11``, but the vaapi/GLX interop is
said to be slower than ``vaapi-copy``.
The ``cuda`` and ``cuda-copy`` modes provides deinterlacing in the decoder The ``cuda`` and ``cuda-copy`` modes provides deinterlacing in the decoder
which is useful as there is no other deinterlacing mechanism in the opengl which is useful as there is no other deinterlacing mechanism in the opengl