mirror of https://github.com/mpv-player/mpv
DOCS/man/options.rst: further tweak sub-ass-use-video-data description
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@ -2570,17 +2570,16 @@ Subtitles
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``--sub-ass-use-video-data=<none|aspect-ratio|all>``
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``--sub-ass-use-video-data=<none|aspect-ratio|all>``
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Controls which information about the video stream is passed to libass.
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Controls which information about the video stream is passed to libass.
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Any option but ``all`` is incompatible with VSFilter, whose behavior
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Any option but ``all`` is incompatible with standard ASS as defined by VSFilter,
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most subtitle scripts and renderers target, including libass.
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whose behavior most subtitle scripts and renderers target, including libass.
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Aspect ratio and storage resolution information are needed for VSFilter
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Video stream properties are needed to accurately emulate VSFilter semantics and
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compatibility, and withholding them will likely result in broken subtitle
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withholding them will likely result in broken subtitle rendering for most files.
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rendering for most files. It's thus recommended to only use ``none`` or
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It's thus recommended to only change this selectively if required on a per-file basis.
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``aspect-ratio`` on a per-file basis.
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:none: Don't use aspect ratio or storage resolution.
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:none: Don't forward any video stream information.
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:aspect-ratio: Use aspect ratio only. Resolutions specified in the script
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:aspect-ratio: Only forward aspect ratio; fallbacks are used for other properties.
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are used in place of storage resolution.
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This makes behaviour consistent across different video resolutions.
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:all: Use both aspect ratio and storage resolution.
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:all: Forward all available information, notably including storage resolution.
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For certain kinds of broken ASS files which got repurposed across
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For certain kinds of broken ASS files which got repurposed across
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several video resolutions without either setting ``LayoutRes`` headers
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several video resolutions without either setting ``LayoutRes`` headers
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